Because air puffs up the cream as it is whipped, there is a physical change even though the ingredients are still cream and air.
What is physical change ?Physical modifications are those that affect a chemical substance's form but not its chemical content. Physical changes may normally be used to separate compounds into chemical elements or simpler compounds, but they cannot be used to separate mixtures into their component compounds.
Liquid cream is extensively combined with small air bubbles to form the foam colloid known as whipped cream. Because milk is transformed from a colloid (cream) to a solid (butter) without changing its chemical makeup, turning milk into butter is a physical transformation. This change in the body can be undone.
Thus, there is a physical change even though the ingredients are still cream and air.
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what is the vapor pressure of water at 50c.
Water has a 92.5 torr vapour pressure at 50 degrees Celsius.
What is vapour pressure?The tendency of a substance to transform into a gaseous or vapour state is measured by vapour pressure, which rises with temperature. The boiling point of a liquid is the temperature at which the pressure imposed by its surroundings equals the vapour pressure present at the liquid's surface.The pressure a vapour exerts on its condensed phases in a closed system when it is in thermodynamic equilibrium with them at a specific temperature is known as vapour pressure or equilibrium vapour pressure. The equilibrium vapour pressure provides a clue as to a liquid's propensity to evaporate thermodynamically.To learn more about vapor pressure refer to:
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Magnesium metal reacts with acid to produce hydrogen gas.
The gas displaces water from a 100-mL graduated cylinder,
and the water level decreases from 95.0 mL to 32.5 mL.
What is the volume of gas produced by the reaction?
The volume of the gas produced by the reaction, given that the displacement of the gas decrease the water level from 95.0 mL to 32.5 mL is 62.5 mL
How do I determine the volume of gas produced?We know that the volume of irregular objects can be obtained by using displacement method. This method is shown by the following formula:
Volume of irregular object = Original volume of water - new volume of water
With the above information, we can easily determine the volume of the gas produced. Details below
Origid Al volume of water = 95.0 mLNew volume of water = 32.5 mLVolume of gas produced =?Volume of irregular object = Original volume of water - new volume of water
Volume of gas produced = 95.0 - 32.5
Volume of gas produced = 62.5 mL
Thus, we can conclude from the above calculation that the volume of the gas produced is 62.5 mL
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Which of the following has the largest atomic radius? oxygen boron neon lilthium
What mass of sodium hydroxide, NaOH, would be required to produce 16 g of the antacid milk of magnesia [magnesium hydroxide, Mg(OH)2] by the following reaction? MgCl2(aq) + 2NaOH(aq) ⟶ Mg(OH)2(s) + 2NaCl(aq)
It would take 22g of sodium hydroxide (NaOH) to make 16g of the antacid milk of magnesia (magnesium hydroxide).
Simply put, what is stoichiometry?In the field of chemistry known as stoichiometry, desired quantitative data is ascertained by using relationships between the reactants and/or products of a chemical reaction. Stoichiometry literally translates as the measure of elements because the Greek words stoikhein and metron both mean element and measure, respectively.
What is the stoichiometric law?In a chemical reaction, the total mass of reactant and product are equal, according to the statement, and neither is generated nor destroyed. This is the stoichiometric law, and also the law of conservation of mass.
[tex]16 \mathrm{~g} \text { of } \mathrm{Mg}(\mathrm{OH})_2 \times \frac{1 \mathrm{molMg}(\mathrm{OH})_2}{58.3 g \mathrm{gg}(\mathrm{OH})_2} \times \frac{2 \mathrm{~mol} \mathrm{NaOH}}{1 \mathrm{molMg}(\mathrm{OH})_2} \times \frac{40 \mathrm{gNaOH}}{\mathrm{molNaOH}}=22 \mathrm{~g}[/tex]
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How many oxygen atoms are In 24.7g of calcium oxalate?
The number of atoms of oxygen present in 24.7 g of calcium oxalate would be 4.64 x [tex]10^{23[/tex] atoms.
Number of atoms in substancesCalcium oxalate is made up of calcium, carbon, and oxygen according to the following:
[tex]CaC_2O_4 --- > Ca^{2+} + 2C^{4+} + 4O^{2-}[/tex]
In other words, 1 mole of calcium oxalate contains 4 moles of oxygen atoms.
Equivalent mole of 24.7 g of calcium oxalate = 24.7/128.097 = 0.1928 mol
1 mole calcium oxalate = 4 moles of oxygen
0.1928 mole calcium oxalate = 0.1928 x 4
= 0.7712 moles
1 mole of substances = 6.022 x [tex]10^{23[/tex] atoms
0.7712 moles of oxygen = 0.7712 x 6.022 x [tex]10^{23[/tex]
= 4.64 x [tex]10^{23[/tex] atoms
In other words, 24.7 g of calcium oxalate contains 4.64 x [tex]10^{23[/tex] atoms of oxygen.
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I need help solving this ASAP PLS
Answer:31.58
Explanation:
24-2+8
Which compound includes a polyatomic ion that contains oxygen?
tin(II) chloride
hydrochloric acid
lithium carbonate
dinitrogen trioxide
The compound includes a polyatomic ion that contains oxygen is lithium carbonate. Therefore, option C is correct.
What is polyatomic ion ?The term polyatomic ion is defined as ions which consist of more than one atom. Polyatomic ions are formed by covalent bonds, especially coordinate covalent bonds.
The polyatomic ions have a net charge on them. Only a few of the elements on the periodic table have a second letter that is lowercase after their initial capital letter.
Thus, The compound includes a polyatomic ion that contains oxygen is lithium carbonate, option C is correct.
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If the pressure is constant, it simplifies to _____________ law.
Answer:
Charle's Law
Explanation:
Charles's law—named for J. -A. -C. Charles (1746–1823) is a statement that the volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.
Answer:
the question is not absolutely clear, as you have not mentioned the entire statement...
but, still the part which you have written, corresponds to Charle's law...
hope it helps
Study the reaction.
Mg + Cl₂ → Mg2+ + 2Cl¯
What is the oxidizing agent?
Cl2, because it gains electrons and is reduced to Cl- in the
reaction
Mg2+, because it has lost electrons and is oxidized from Mg
Mg, because it loses electrons and is oxidized to Mg2+ in the
reaction
Cr, because it has gained electrons and is reduced from Cl₂
Answer:
Cl2, because it gains electrons and is reduced to Cl- in the
reaction
Explanation:
Chlorine is getting reduced, since, it undergoes, the addition of an electropositive element. It thus acts as an oxidizing agent.
Please answer the following question and explain your answer.
Exercise 12.41
A solution contains 50 g of NaCl per 100.0 g of water at 25 degree C.
Part A
Is the solution unsaturated, saturated, or supersaturated? (Use the figure 12.11 in the textbook.) saturated unsaturated supersaturated
Saturated
unsaturated
supersaturated
A client is paying you $740.50/oz of Pt to weigh out 1000 Pt samples. The contract between you and the client states that the weight of Pt for each sample is defined to be:
(Weight of the sample.) - (The average noise in the measurement.) - 2 x (The standard deviation in the noise of the measurement.)
→If the signal-to-noise of the measurement could be increased to 25000, estimate how much more money would you make on the contract?←
Assume your starting signal to noise is 300. Assume the same signal as in question 2. Assume all the Pt samples will have a similar weight. Both questions 1 and 2 are pasted below for your reference.
Do not use scientific notation. 1 oz. = 28.3595 g Use all figures. Do not use units or dollar signs.
Question 2: If the average noise for the previous question (see below) was 0.506 g, what would the signal-to-noise be? Do not use scientific notation. Signal-to-noise is unitless. Answer: 310.04
Question 1: A sample of Pt is weighed 5 times with the following results:
50.121 g 50.289 g 50.003 g 50.241 g 49.910 g
What is the signal-to-noise ratio? Do not use scientific notation. Signal-to-noise is unitless. Answer: 313.21
The total amount of money you would make on the contract if the signal-to-noise ratio were increased to 25000 is $823,330.00
If the average noise for the previous question was 0.506 g, the signal-to-noise would be 24700
How do you calculate the money made on the contract?To calculate the amount of money you would make if the signal-to-noise ratio were increased to 25000, you need to first calculate how much more money you would make on each sample. To do this, you need to know the weight of the Pt in each sample and the difference in the noise level between the current signal-to-noise ratio (300) and the desired signal-to-noise ratio (25000).
First, find the weight of the Pt in each sample by subtracting the average noise (0.506 g) and two times the standard deviation in the noise of the measurement (which is not provided) from the weight of the sample. Let's assume that the weight of the Pt in each sample is 50.000 g.
Next, find the difference in the noise level between the current signal-to-noise ratio (300) and the desired signal-to-noise ratio (25000) by subtracting the current signal-to-noise ratio from the desired signal-to-noise ratio. This gives a difference of 24700.
Finally, multiply the weight of the Pt in each sample (50.000 g) by the difference in the noise level (24700) and divide by the current signal-to-noise ratio (300). This gives a difference in the amount of money you would make on each sample of $823.33.
To find the total amount of money you would make on the contract if the signal-to-noise ratio were increased to 25000, multiply the difference in the amount of money you would make on each sample ($823.33) by the number of samples (1000). This gives a total of $823,330.00.
Therefore, the correct answers are as given above
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name the organic molecules using nomenclature
please see picture
for the question.
thank you
a.) Pentane
b.) 2 - Methylpropane
c.) 3- Methylpentane
d.) Pent -2- ene
e.) 2 methylbut-2-ene
f. ) 3,3 dimethylpent -1-ene
g. ) 1 Bromo - 5- methylhexane
h. ) 3-Chloropentane
i. ) 1 - Iodoethane
Answer:
Explanation:
a.) Pentane
b.) 2 - Methylpropane
c.) 3- Methylpentane
d.) Pent -2- ene
e.) 2 methylbut-2-ene
f. ) 3,3 dimethylpent -1-ene
g. ) 1 Bromo - 5- methylhexane
h. ) 3-Chloropentane
i. ) 1 - Iodoethane
Select the oxidizing or reducing agent(s) that you would use to carry out the transformation below:
Li, NH₃
i. KMnO₄, H₂O, KOH, heat; ii. H₃O^+
i. O₃, CH₃OH ii. (CH₃)₂S
PCC
RCO₃ HNaBH₄
i. LiAlH₄; ii. H₃O^+
H₂, Lindlar's Catalyst
H₂, Ni
In order to carry out the transformation in the first reaction, KMnO₄ is the oxidizing agent and Li is the reducing agent. H₂O and KOH are just solvents and heat is just a necessary condition for the reaction to take place.
In the second reaction, O₃ is the oxidizing agent and (CH₃)₂S is the reducing agent. CH₃OH is just a solvent.
In the third reaction, PCC (pyridinium chlorochromate) is the oxidizing agent and RCO₃ is the reducing agent.
In the fourth reaction, HNaBH₄ is the reducing agent and LiAlH₄ is the reducing agent.
In the fifth reaction, H₂ is the reducing agent and Lindlar's Catalyst is the catalyst.
In the sixth reaction, H₂ is the reducing agent and Ni is the catalyst.
What is an oxidizing agent?An oxidizing agent is a substance that accepts electrons from another substance and is thereby reduced. In the process of accepting electrons, the oxidizing agent itself is oxidized. Oxidizing agents are typically elements or compounds that are very electronegative, meaning they have a strong affinity for electrons and are able to easily remove them from other substances. Some examples of common oxidizing agents include oxygen (O₂), hydrogen peroxide (H₂O₂), and potassium permanganate (KMnO₄).
Therefore, the correct answers are as given above
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ASAP PLASE I WILL GIVE BRAINLIEST!!!!!
There are several ways to model a compound. One type of model is shown.
4 C's are connected in a line by 3 black lines. The C on the left has 3 H's attached to it each by a black line. The next C has 1 H attached by a black line and 1 O attached by 2 black lines. The next C has 2 H's attached to it by 1 black line each. The last C has 2 H's attached to it by 1 black line each and 1 O attached by a single black line. That O has an H attached to it by 1 black line.
What is the chemical formula for the molecule represented by the model?
CHO
C4H9O2
C4H8O
C3H8O2
According to the given description the chemical formula for the molecule represented by the model is C₄H₉O₂.
What is chemical formula?Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
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Many horses are still mesured in an old distance measurement, the furlong.
Answer:
A furlong is an old unit of distance measurement that is still used in horse racing. It is equivalent to 660 feet (201.168 meters). Horse races are traditionally measured in furlongs, and many race tracks are still laid out in furlongs. Additionally, many horses' performance records are still measured and recorded in furlongs.
PLEASE HELP
The Indian Ocean is experiencing the loss of coral reefs at an increasing rate. This is due in part to _____ ocean temperatures and increased _____ levels.
A) increased; acid
B) decreased; base
C) decreased; acid
D) increased; base
C) decreased; acid
Coral reefs are sensitive to changes in ocean temperatures and acidity levels, so their health and survival are threatened when the temperatures go down and acidity levels up.
Answer: In bold and underlined
The Indian Ocean is experiencing the loss of coral reefs at an increasing rate. This is due in part to Decreased ocean temperatures and increased Acid levels.
Explanation:Coral reefs are sensitive to changes in ocean temperatures and acidity levels, so their health and survival are threatened when the temperatures go down and acidity levels up.
hydrogen reacts with oxygen to form water (H2O) according to the following equation: 2H2 + O2 → 2H2O what are the products of this reaction?
O2
H2O
H2
H2 + O2
Answer:
H²O es ok pespero ayudarte
Does anyone know the name of this measuring tool
Measurement tools have various types; major products include vernier calipers, micrometers, dial gauges, gauges of varied types, bubble levels, protractors and rulers; they are tools used in production processes and quality checks.
1. how to prepare pure dry crystals of sodium chloride
salt by using hydrochloric acid and sodium
hydroxide (use thymolphthalein as an indicator)
When solutions of hydrochloric acid and sodium hydroxide react, there is the formation of sodium chloride and water, after the completion of the reaction leaves the solution in a warm place. After the water evaporates and leaves the sparkly crystal of NaCl behind.
What is a neutralization reaction?A neutralization reaction can be defined as a kind of chemical reaction where an acidic solution and a basic solution react with each other to create respective salt and water.
The acidic strength of the resulting solution gives the pH of the neutralized reaction. When a strongly acidic solution reacts with a strongly basic solution the generated salt can be neither acidic nor basic, it's neutral.
When hydrochloric acid (a strong acid) reacts with sodium hydroxide (a strong base), the formed salt is sodium chloride and water.
[tex]HCl + NaOH \longrightarrow NaCl + H_2O[/tex]
The use thymolphthalein indicator, tells about the completion of the reaction. The dry crystals of NaCl can be obtained after the evaporation of water.
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Which of the following represents a decomposition reaction?
A. AB A+B
B. AB + CD → AC + BD
C. AB + C AC + B
D. A+B → AB
Answer: The correct answer is D: A+B → AB.
Explanation:
A decomposition reaction is a type of chemical reaction in which a single compound breaks down into two or more simpler substances. In a decomposition reaction, a compound is broken down into its component parts through the addition of energy, such as heat or light. In the reaction A+B → AB, a compound is formed from two simpler substances, which represents a synthesis reaction rather than a decomposition reaction.
The student pipetted 25.00 ml of the sotck HCl solution from question 12 into a beaker and added one antacid tablet. She then determined that the concentration of the antacid-HCl solution (i.e. C, antacid-HCl) was 0.6279 M. What was the ANC of the antacid tablet?
Based on the moles of acid neutralized, the ANC of the antacid tablet is 0.00194 moles.
What is the ANC of an antacid?The acid-neutralizing capacity (ANC) is the amount of acid that can be neutralized by an antacid.
Antacids neutralize excess stomach acidity to soothe an upset stomach, acid indigestion, heartburn, and sour stomach. They are also used to treat stomach and duodenal ulcers and lessen their discomfort.
The ANC of the antacid is calculated as follows:
ANC = Initial moles of acid neutralized - Final moles of acid neutralized
Moles of acid = molarity * volume in liters
The initial concentration of acid = 0.7169 M
The final concentration of acid = 0.6279
Initial moles of acid = (0.7169) (0.02500)
Initial moles of acid = 0.01792 moles
Final moles of acid = (0.6279) (0.02500)
Final moles of acid = 0.01598 moles
ANC of the antacid = (0.01792 - 0.01598) moles
ANC of the antacid = 0.00194 moles
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prilocaine is the generic name for which of the following? group of answer choices a. citanest marcaine b. carbocaine xylocaine, c. alphacaine
d. octocaine
Prilocaine is the generic name for the drug Xylocaine. Xylocaine is a local anesthetic that is used to numb the area prior to a medical procedure.
It is available in various forms including creams, gels, solutions, and injectables. Xylocaine is also known by the brand names Citanest, Carbocaine, Alphacaine, and Octocaine.
Prilocaine is a local anesthetic that is used to reduce the feeling of pain in a specific area before a medical procedure. It works by blocking the transmission of pain signals from the affected area to the brain, so that the patient cannot feel the sensation of pain. Prilocaine is available in various forms, including creams, gels, solutions, and injectables.
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Genes provide instructions for making clotting factor proteins. The diagram to the left is an example of just one of hundreds of thousands of different proteins made in the cells of your body. What other types of proteins do you think your body makes? List your ideas below.
1. Prothrombin
2. Fibrinogen
3. Plasminogen
4. Factor V
5. Factor VIII
6. Factor IX
7. Factor X
8. Tissue Factor
9. von Willebrand factor
10. Protein C
11. Antithrombin III
Each of these proteins plays a crucial role in the clotting process. Prothrombin is a precursor molecule that is converted into thrombin. Fibrinogen and plasminogen are involved in generating the meshwork of fibrin needed to form a clot. Factor V, Factor VIII, Factor IX, and Factor X help form the procoagulant enzymes necessary for clotting. Tissue factor acts as a receptor for Factor VII, initiating the coagulation cascade. von Willebrand factor helps inhibit clotting and promote clot formation. Protein C and Antithrombin III both help to decrease the activity of coagulation factors.
The human body makes a vast variety of different proteins, each with a specific function. Some examples of proteins made in the body include enzyme proteins, structural proteins etc.
What are the types of proteins ?Some types of proteins in our body are:
Enzymes: catalyze chemical reactions in the body, such as digestion and metabolism
Hormones: regulate various bodily processes, such as growth and development, metabolism, and stress responses
Antibodies: help to defend the body against infections and other foreign substances
Structural proteins: provide support and structure to various tissues and organs, such as collagen in skin and bones
Transport proteins: help to move molecules and ions across cell membranes, such as hemoglobin in red blood cells
Receptor proteins: bind to specific molecules and transmit signals to the cell, such as insulin receptors on cell membranes
Motor proteins: enable movement and transport within cells, such as myosin in muscle cells
Storage proteins: store molecules and ions in the body, such as ferritin storing iron in the liver
These are just a few examples of the many types of proteins made in the body, each with their own unique structure and function.
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What type of reaction is C4H603+H2O=>2C2H402
Answer:
Explanation:
This type of chemical reaction is Decomposition
Sat 4 write about six uses of salt
Salt is an essential mineral that has many uses in various industries and in everyday life. Here are six uses of salt:
Food seasoning: Salt is commonly used to add flavor to food and is found in many types of cuisine around the world.
Food preservation: Salt has antimicrobial properties that can help preserve food and prevent spoilage. This is why it has been used for centuries to preserve meat, fish, and other perishable items.
Water treatment: Salt is used in the water treatment process to soften hard water and remove impurities.
Chemical manufacturing: Salt is used as a raw material in the production of chemicals such as chlorine, sodium hydroxide, and sodium carbonate.
De-icing: Salt is often used to melt ice and snow on roads and sidewalks during the winter months.
Health and beauty: Salt is used in various health and beauty products, including bath salts, body scrubs, and toothpaste. It is also used in some medicinal treatments, such as saline solutions for nasal irrigation.
1.05 soil compaction lab worksheet
Answer:
I am in grade 6. I don't understand this question please write it clearly.
A container with volume 2.0 L is filled with a gas at a pressure of 1.5 atm. By decreasing the volume of the container to 1.0 L, what is the resulting pressure?
Taking into account the Boyle's law, the resulting pressure is 3 atm.
Boyle's lawBoyle's law states that the pressure of a gas in a closed container is inversely proportional to the volume of the container, when the temperature is constant. That is, if the pressure increases, the volume decreases, while if the pressure decreases, the volume increases.
Mathematically, this law states that the product of pressure times volume is constant:
P×V= k
where
P is the pressure.V is the volume.k is a constant.Analyzing an initial state 1 and a final state 2, it is fulfilled:
P₁×V₁= P₂×V₂
Final pressureIn this case, you know:
P₁= 1.5 atmV₁= 2 LP₂= ?V₂= 1 LReplacing in Boyle's law:
1.5 atm× 2 L= P₂× 1 L
Solving:
(1.5 atm× 2 L)÷ 1 L= P₂
3 atm= P₂
Finally, the final pressure is 3 atm.
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which of these acids dissociates most completely lowering the ph to the lowest point compared to the others? question 57 options: hcl ch3cooh lactic acid nh3
The most completely lowering the pH to the lowest comparing the option given is HCl. The 3 option will lowering the pH but NH₃.
How to determine the most completely lowering pH on the option?Acid is a compound that has pH lower than 7 where alkali is the opposite of the acid. The more acid compound has, the more it will lower the pH. As per data given is HCl, CH₃COOH, Lactic acid or C₃H₆O₃ and NH₃. Since NH₃ is an alkali we can tell that NH₃ is not the option. So, we have 3 acid left. To find out the most acid between the 3 left, compare the pH they have where their pH as follow:
HCl pH is 2CH₃COOH pH is 3Lactic acid or C₃H₆O₃ is 2.43Since the lowest pH is on HCl, the most completely lowering pH will be HCl
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how many atoms are in 5.7 g of helium?
Answer:
3.5*1024
Explanation:
3584
Suppose you are trying to find the volume of a box based on the given measurements for the length, width, and height of the box, where the height was measured in two parts. length, =2.20 in width, =2.91 in height, ℎ=10.4 in+1 in Calculate the height, ℎ, of the box, first keeping all digits, then rounding to the proper number of significant figures.
Based on the given measurements for the length, width, and height of the box;
the height of the box, h, is 11.4 inchesthe volume of the box, V, is 73.0 in³What is the height of the box?The height of the box is determined from the data provided as follows:
length, l = 2.2 in
width, w = 3.5 in
height, h = 10.4 in + 1 in
The height of the box = 10.4 + 1 in
Hence, the height of the box = 11.4 in
The volume of the box is calculated as a product of the length, width, and height of the box as determined from the measurements taken.
The volume of the box, V = l × w × h
where;
l is length = 2.20 in
w is the width = 2.91 in
h is the height = 11.4 in
The volume of the box, V = 2.20 * 2.91 * 11.4
The volume of the box, V = 73.0 in³
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Complete question:
Suppose you are trying to find the volume of a box based on the following measurements for the length, width, and height of the box, where the height was measured in two parts.
length, l = 2.2 in
width, w = 3.5 in
height, h = 10.4 in + 1 in
a. Calculate the height (h) of the box first keeping all digits, then rounding to the proper number of significant figures.
b. Calculate the volume (V) of the box using V = l × w × h. Round to the proper number of significant figures.
