Answer:
Chlorine is limiting reactant
Explanation:
Based on the reaction:
Cl₂ + 2NaOH → NaClO + NaCl + H₂O
1 mole of chlorine reacts with 2 moles of NaOH
To find limiting reactant, we need to determine the moles of the reactants:
Moles Cl₂ -Molar mass: 70.9g/mol-:
800lb Cl₂ * (453.6g / 1lb) * (1mol / 70.90g) =
5118 moles Cl₂
Moles NaOH -Molar mass: 40g/mol-:
1200lb NaOH * (453.6g / 1lb) * (1mol / 40g) =
13608 moles NaOH
For a complete reaction of 13608 moles of NaOH you need:
13608 moles NaOH * (1mol Cl₂ / 2 moles NaOH) = 6804 moles of Cl₂
As the solution contains just 5118 moles of chlorine,
Chlorine is limiting reactantChoose the hypothesis for this controlled experiment that answers this question: “Does sunlight cause dyes in clothing to fade?”
Dyes in the cloth are created to withstand fading when being washed in the washing machine.
Dyes fade by being exposed to direct sunlight over a period of two weeks.
You cannot determine whether the sunlight causes the dyes in clothing to fade.
Heat causes dyes in cloth to fade over a period of one week.
Answer:
Dyes fade by being exposed to direct sunlight over a period of two weeks.
Explanation:
*Will give Brainliest* What is the average atomic mass of one molecule of methane, which has one 12C atom and four 1H atoms?
Answer:
The atomic mass of methane (CH4)is 12 amu for the carbon plus 4 x 1 amu for the four hydrogens, for a total of 16 amu. Therefore, the molar mass of methane is 16g.
Is magnetite organic?
Answer: organic
Explanation:
An 8 gigabyte computer memory chip can be purchased for $73.99. This memory capacity is equivalent to
A.800 megabytes
B.8000 megabytes
C.80 megabytes
D.80,000
Answer:
B 8000
Explanation:
There's 1000 megabytes in one gigabyte
8 x 1000 = 8000
BALANCING EQUATION
XCiz(aq) + AgNO3(aq)
X(NO3)2(aq) + AgCl(s)
Answer:
Explanation:
XCL2 + 2AgNO3 aq ----------- 2 AgCl ( aq ) + X (NO3)2
Migration rates, birth rates, and death rates are all ways to measure changes in __________. A. urbanization B. population C. weather D. climate
Answer:
Population
Explanation:
environmental science-
Which of the following statements about logistic growth curves is true?
a.
Logistic growth curves are common for R-selected species.
b.
Logistic growth curves are J-shaped.
c.
No organisms in nature experience logistic growth rates.
d.
Logistic growth curves increase exponentially at first, then experience slowed growth rates.
Answer:
D
Explanation:
Logistic growth curves increase exponentially at first, then experience slowed growth rates. Hope your question works well!!!
The statements about logistic growth curves is logistic growth curves increase exponentially at first, then experience slowed growth rates.
Thus, option D is true.
What is logistics growth curve ?
The logistics growth curve is defined as the population per capita growth rate is decreases and get smaller and the size of population increases maximum applied by resources which are limited in the environment which is known as the K that is carrying capacity.
The logistic population growth is represented by logistic growth curve on a line graph and the shape of curve is S - shaped that represents slow increase, and rapid growth in population and after that there is reduction in growth.
The best example of logistics growth is observed in wild population that includes sheep as well as harbor seals. In both of the cases the number of population increases and carrying capacity for small period of time.
Therefore,The statements about logistic growth curves is logistic growth curves increase exponentially at first, then experience slowed growth rates.
Thus, option D is true.
Learn more about logistic curve here:
https://brainly.com/question/24916887
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2 points
7. Given the following specific heats of energy, if the materials were left
out in the sun for 2 hours, which material would be the hottest? *
Material A: 2.03 J/gC
Material B: 0.71 J/gC
Material C: 0.89 J/gC
Material D: 0.45 J/gC
Answer:
Material D as its specific heat is the smallest.
Explanation:
Hello.
In this case, since the specific heat is defined as the energy required to increase (or decrease) 1 gram of a material by 1 °C, we can infer that the smaller the specific, the less energy is required for such temperature change, therefore, since material D needs 0.45 J of energy to increase the temperature of 1 g by 1 °C we can see that it will become the hottest as it has the smallest specific heat among the other ones.
Best regards.
What are significant figures?
Answer:
Significant figures are the number of digits in a value, often a measurement, that contributes to the degree of accuracy of the value.
Explanation:
All non-zero numbers ARE significant.
Zeros between two non-zero digits ARE significant.
Leading zeros are NOT significant.
Trailing zeros to the right of the decimal are significant.
Trailing zeros in a whole number with the decimal shown significant.
In Section 3.5, we applied the equations for a particle in a box to the TC electrons in butadiene. This simple model is called the free-electron model. Using the same argument, show that the length of hexatriene can be estimated to be 867 pm. Show that the first electronic transition is predicted to occur at 2.8 x 104 cm-1. (Remember that hexatriene has six TC electrons.)
Answer: DeltaE = 2.83 * 10^4 cm^-1
Explanation:
hexatriene has six TC (pi) electrons
3 C = C BONDS : 3 * 135 = 405 pm
2 C - C BONDS : 2 * 154 = 308 pm
also the TWO CARBON ATOMIC RADIUS AT EACH END : 2 * 44 = 154 pm
therefore length of molecule = 405pm + 308pm + 154pm = 867 pm
now
HoMo = E4 and CoMo = E3
DeltaE = E4 - E3 = (4^2h^2 / 8mL^2) - (3^2h^2 / 8mL^2)
DeltaE = 7h^2 / 8mL^2
DeltaE = 7 * (6.62 *10^-35 Js)^2 / ( 8 * 9.1*10^-31 kg * (867*10-12m)^2)
DeltaE = 5.62 * 10^-19 J
( 1J = 5.034 * 10^22 cm^-1)
therefore
DeltaE = 2.83 * 10^4 cm^-1
Which best describes the current model of the atom? It is similar to the model of the solar system with orbiting planets. It has remained the same for several centuries. It is similar to the model of plum pudding with suspended plums. It may be revised with increasing scientific knowledge.
Answer: D
Explanation:
I took the test
1.Which of the following is the nature of sound wave?
Answer:
the answer is longgitudinal
What are examples of molecular compounds that we use in everyday life?
Answer:
Carbon dioxide and hydrogen monoxide
True or False: Observations are just things that you see
Answer:
False
Explanation:
"Observations is the action of observing something or someone carefully or in order to gain information" - google dictionary. This definition does not completely match the definition given, so the answer is false.
I hope this helps!
Answer: true
Explanation: the action or process of observing something or someone carefully or in order to gain information that is the real definition
Determine whether each statement describes a solution of a strong electrolyte, weak electrolyte, or non-electrolyte.
Has a medium level of conductivity Choose...
Contains a complete solute Choose...
Has little or no conductivity Choose...
Has the highest conductivity Choose...
Contains a completely dissociated solute Choose...
Contains a partially dissociated solute
Answer:
Please find the terms with their correct description in the explanation section.
Explanation:
An electrolyte is a substance that dissociates or ionizes into cations (positive charged ions) and anions (negative charged ions) in an aqueous solution. An electrolyte can either be strong or weak depending on how well it ionizes and its level of conductivity. However, a non-electrolyte neither ionizes in a solution nor conducts electricity.
Based on this;
1. Weak electrolyte: Has a medium level of conductivity i.e. partially conducts electricity
2. Strong electrolyte: Contains a complete solute
3. Non-electrolyte: Has little or no conductivity i.e. cannot conduct electricity because it doesn't dissociate into ions.
4. Strong electrolyte: Has the highest conductivity i.e. conducts electricity very well.
5. Strong electrolyte: Contains a completely dissociated solute i.e. the solute of the electrolyte separates into anions and cations completely.
6. Weak electrolyte: Contains a partially dissociated solute i.e. the ions of the solute do not ionize completely in the solution.
Weak electrolyte, strong electrolyte, non-electrolyte, strong electrolyte strong electrolyte and weak electrolyte are the answers of the each statement.
Has a medium level of conductivity means it conducts partially electricity not fully so we can say that it is a weak electrolyte. It also contains a partially dissociated solute i.e. the solute do not ionize completely into ions in the solution.
Contains a complete solute as well as has the highest conductivity means conducts electricity better refers to Strong electrolyte. It contains a completely dissociated solute i.e. the solute of the electrolyte separates into anions and cations completely so that's why it conducts electricity very well. Non-electrolyte has little or no conductivity means it cannot conduct electricity due to no dissociation into ions.
Learn more: https://brainly.com/question/18000104
Vacuoles are round organelles found in both plant and animal cells. Their primary function is to -
produce food and energy for the cell.
control the activities of the cell.
transport materials between parts of the cell.
store water, waste, and nutrients for the cell.
Answer:
D.) store water, waste, and nutrients for the cell.
Explanation:
D is your answer because the vacuole is like a closet for the cell. It can store anything the cell may use later or it can store waste that is to be taken out of the cell at a later time as to not contaminate the rest of the organelles. In plant cells, it can also help with support since it is so big.
The density of rubbing alcohol is 0.785g/mL at 25℃.
Calculate the mass of 15.0 mL of the rubbing alcohol.
Calculate the volume of 15.0 g of the rubbing alcohol.
Answer: The temperature is there to confuse you on purpose. Density changes with temp, but in these type of problems, they mean nothing
Explanation:
The formula for density is mass per unit of volume.
[tex]D=m/v[/tex]
We dont have to do any conversions here so it boils down to division and multiplication.
[tex]0.785g/mL=mass/15mL\\0.785g/mL*15mL = mass\\=11.78 grams[/tex]
Now for the second part:
[tex]0.785g/mL=15g/volume\\15g/0.785g/mL = volume\\=19.11mL[/tex]
When determining an element’s chemical properties, the most important subatomic particle to look at is
—
F. protons
G. valence electrons
H. neutrons
J. positrons
PLEASE HELP ASP...Patsy wants to find out that it would take her to walk a 10 K (10 km) if she maintains a
pace of 6.5 km/hr. How long will it take her?
Answer:
I tried doing the math I believe it is 0.65 min. converted is an 1 hour and 5 min
True or False? The following set of quantum numbers is acceptable (0, 0, 0, +1/2). Explain.
This following set of quantum numbers
Answer:
False
Explanation:
The values of the principal quantum number range from 1- infinity. This implies that there is no such thing as an energy level with n=0.
Hence this can not be an acceptable set of quantum numbers when n=0.
Which type of rock typically has the largest formed crystals?
A) metamorphic
B) sedimentary
C) extrusive igneous (Its not C)
D) intrusive igneous
It’s D bro bro
Plus u can look up the rocks one by one and just put creates crystals?
Answer:
ITS D
Explanation:
DID THE USATESTPREP
One mole of X contains how many molecules of X
Answer:
The mole is represented by Avogadro's number, which is 6.022×1023 atoms or molecules per mol
Explanation:
what is the atomic number of an element containing 12 neutrons and having a mass number of 24
Violet light has a wavelength of 422 nm, how much energy is found in this photon of violet light?
Answer:
3.025eV
Explanation:
Energy of a photon is given by
E=hν
Where h is the Planck's constant
And ν represents the frequency of the photon .
Now for violet light wavelength λ=410nm= 410x10^-9m
By using the formula ν=c/λ
where c represents speed of light I.e 3 x 10^8 m/s
Calculating energy of violet photon we have
E=hc/λ
h=6.626 x 10^-34 J.s
On inserting the value in the formula , we get
E= 4.848 x 10^-19 Joules
To convert it into electron volts we need to divide it by 1.602 x10^-19.
The final result what we have is E=3.026eV.
Note: the result calculated is according to the above value . result may vary according to the values taken .
A certain chemical compound has a molar mass of 106.05 g/mol. Calculate the mass in grams of 2.58 moles of this compound.
Answer:
273.609
Explanation:
1 mole of a substance is equal to molar mass of the substance
1 mole of substance = 106.05
2.58 moles = x
then you cross multiply to get your answer
Why does temperature increase between changes of physical state?
is the longest stage of the cell cycle.
Answer:
Interphase is the longest part of the cell cycle, this is when the cell grows and copies its DNA before moving into mitosis.
Explanation:
Answer:
Interphase
Explanation:
The gas CO2 is diffusing at steady state through a tube 0.20 meters long. The tube has a diameter of 0.01 meters and also contains N2 at 298 K. The total pressure inside the tube is constant at 101.32 kPa. The partial pressure of CO2 is 456 mm Hg at one end and 76 mm Hg at the other end. The diffusion coefficient of CO2 in N2 is 1.67 x 10-5 m2 /sec at 298 K. Calculate the molar flux of CO2 in SI units, assuming equimolar counter-diffusion between the CO2 and N2 gases.
Answer:
[tex]\mathbf{N_A = 1.71 \times 10^{-6} \ kmol/m^2.s}[/tex]
Explanation:
From the given information:
The total length = 0.20 m
Diameter = 0.01 m
Temperature = 298 K
Pressure = 101.32 kPa
The partial pressure of CO2 i.e [tex]p_{A1}[/tex] is 456 mm Hg at one end
To kPa, we have:
= [tex]456 \times \dfrac{101.325}{760}[/tex]
= 60.795 kPa
The partial pressure of CO2 i.e. [tex]p_{A2}[/tex] at the other end is 76 mm Hg
To kPa; we have
= [tex]75 \times \dfrac{101.325}{760}[/tex]
= 9.999 kPa
[tex]\simeq[/tex] 10 kPa
The diffusion coefficient of CO[tex]_2[/tex] in N[tex]_2[/tex] is 1.67 × 10⁻⁵
Universal gas constant = 8.314 J/mol/k
For equimolar counter-diffusion between the CO2 and N2 gases, the molar flux of CO[tex]_2[/tex] can be estimated by using the formula:
[tex]N_A = \dfrac{D_{AB}}{RT}(p_{A1} - p_{A2})[/tex]
replacing our values from the above parameters then:
[tex]N_A = \dfrac{1.67 \times 10^{-5}}{8.314 \times 298 \times 0.2}(60.795 - 10)[/tex]
[tex]\mathbf{N_A = 1.71 \times 10^{-6} \ kmol/m^2.s}[/tex]
83.80 round to nearst whole
Greetings! Hope this helps!
Answer
84 would be your answer
Have a good day!
_______________
A brainliest would help tons! :D
You put water and lots of table sugar into a beaker and then heat the solution until all the sugar dissolves, creating a supersaturated solution. You then allow the solution to cool slowly to room temperature. Next, you drop a crystal of sugar into the solution. What happens? A. The tiny crystal dissolves instantly. B. The crystal dissolves completely as it sinks in the solution. C. The crystal sinks slowly to the bottom without dissolving. D. Crystals appear suddenly in the beaker.
Answer:
D.Crystals appear suddenly in the beaker
Explanation:
