Answer:
As water freezes or evaporates, what happens to the salinity of the remaining ocean water? There is no change to salinity.
Explanation:
How does extreme pressure affect the volume occupied by a real gas compared to the predictions of the ideal gas law? (3 points)
Group of answer choices
The true volume of the gas will be higher than predicted by the ideal gas law because the attraction between the particles is weaker under high pressure.
The true volume of the gas will be lower than predicted by the ideal gas law because the attraction between the particles is weaker under high pressure.
The true volume of the gas will be higher than predicted by the ideal gas law because the volume of the actual particles is more significant under high pressure.
The true volume of the gas will be lower than predicted by the ideal gas law because the volume of the actual particles is more significant under high pressure.
At a very high pressure, the volume of occupied by a real gas is greater than the volume predicted by the ideal gas law, because the volume of the actual particles is more significant under high pressure.
Behavior of gases at low pressure and high pressuresAt low pressure, the distance between gas molecules is relatively far apart, but as the pressure of the gas increases, the distances between theses gaseous molecules becomes smaller.
Due to the high pressure the volume occupied by the gas molecules becomes significant compared with the volume of the container.
As a result, the total volume occupied by the gas will be greater than the volume predicted by the ideal gas law.
Thus at a very high pressure, the volume of occupied by a real gas is greater than the volume predicted by the ideal gas law, because the volume of the actual particles is more significant under high pressure.
Learn more about behavior gases under pressure here: https://brainly.com/question/13512523
Answer: The fourth answer
Explanation:
Under high pressure, real gases deviate from ideal gas behavior as their particles have a finite size and experience intermolecular forces, causing the actual volume of the gas to be lower than predicted by the ideal gas law.
Calculate the number of grams of xenon in 4.811 g of the compound xenon tetrafluoride.
Explanation:
Mass of xenon tetrafluoride = 4.658 g
To determine the number of grams of xenon in 4.658 grams of the compound xenon tetrafluoride:
The chemical formula for xenon tetrafluoride is XeF_4XeF
4
Molar mass of XeF_4XeF
4
= 207.28 g/mol
Molar mass of xenon = 131.29 g/mol
First of all, we would calculate the number of moles of XeF_4XeF
4
.
\begin{gathered}Number\;of\;moles = \frac{mass}{molar\;mass}\\\\Number\;of\;moles = \frac{4.658}{207.28}\end{gathered}
Why does the chance of precipitation increase when the humidity is high?
Because the amount of moisture in the air increases as precipitation falls
Because the amount of moisture in the air decreases as humidity increases
Because the high humidity causes the air to hold more moisture
Because the amount of water vapor in the air increases
Answer:Because the amount of water vapor in the air increases
Explanation:In humid climates, thunderstorms often cause heavier rain than general wintertime rainfall since moisture content in the air typically is higher in the spring and summer, and since air usually rises at a much more rapid rate within developing thunderstorms than in general winter systems.During very heavy rainfall, where all of the water in the atmosphere is often rained out, the water vapour content governs the amount of rainfall. The higher the humidity the greater the water vapour, and the more rain we're likely to see. HOPE THIS HELPS ^w^
A chemist burns 650.0 g of C4H8S2 in excess oxygen, according the following balanced chemical reaction:
C4H8S2+ 902 -> 4CO2 + 4H2O +2S03
If the chemist has 92.2% yield, how many grams of SO3 were produced?
Answer:
952.2g SO3
Explanation:
Molar mass of C4H8S2 is 120.2363 g/mol
Mol in 750.0g = 750.0/120.2363 = 6.238 mol
1mol C4H8S2 produces 2 mol SO3
6.238 mol will produce 2×6.238 = 12.476 mol SO3
Molar mass SO3 = 32+3×16 = 80.0g/mol
Theoretical yield = 12.476×80.0 = 998.08g
The actual yield is 95.4%
Actual mass-produced = 95.4/100×998.08 = 952.2g SO3 produced
Hope it will help you.
Which reagent is used to detect the presence of protein?.
Answer:
Sample Respond: The presence of protein is tested by the Biuret test for proteins. The Biurette reagent made of sodium hydroxide and copper (II) sulfate helps in determining the presence of protein in a sample.
Explanation:
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what are the 7 different electromagnetic waves
The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
* do consider marking me brainliest, if it does help, do also correct me if I am wrong in some way. thank you <3.
which statement is true/false answer
Answer:
yellow is false and black is true.
A student builds a circuit that has a source of electrical energy, connecting wires, a witch and a load. However, the circuit does not work. Suggest three possible reasons why the circuit does not work.
Answer:
switch
Explanation:
maybe the switch is not on
Answer:
1.maybe the switch is not on
2.low voltage of the electrical source
3.the connecting wires could be too long
What are two ways you can tell that steel wool went into a chemical reaction
Answer:
Two ways that I can tell is that rusting is a chemical reaction because it is not caused by any physical force or trauma it's oxidation and it changes colors from heat and heat is one of the main factors for a chemical reaction.
Explanation:
Answer:
Explanation:
Touching the battery to steel wool sends a current through the thin wire, and it heats up a lot (to about 700 degrees C). These temperatures cause the iron to react with the oxygen (O2) in the air and creates iron oxide (FeO2).
N2 + 3H2 2NH3
Using the balanced equation above for the production of ammonia from nitrogen and hydrogen, how many moles of NH3 are produced when 1.7 moles of nitrogen reacts with hydrogen?
Answer:Considering the N2 only, 3 mols of N2 could form 6 moles of NH3. Considering the Hydrogen only, 8 moles of H2 could make 16/3 or 5 1/3 moles of NH3. 5 1/3 is less than 6, so the reaction is limited by the hydrogen, and 5 1/3 is the correct answer. Note that in reality this reaction does not go to completion, and this is just a textbook exercise.
Explanation:
Which element has chemical properties that are most
similar to potassium, And why?
Answer:
Brainliest pls
Explanation:
The components potassium and sodium have comparable substance properties since they have a similar number of valence electrons
8. Acid rain has a pH of 4. Is acid
rain a stronger or weaker acids?
Answer:
Acid rain is a stronger acid.
General Formulas and Concepts:
Acids/Bases
Explanation:
We are given that acid rain has a pH = 4.
We know that the lower the pH number, the more acidic it becomes. The higher the pH number, the more basic is becomes.
Therefore, the lower the pH scale number, the stronger the acid. Typically, the pH scale generally ranges from pH 1 to pH 14.
Comparing pH of 4 in the scale from 1 - 14, it would be a strong acid.
Topic: AP Chemistry
Unit: Acids/Bases
A boy of mass 60 kg and a girl of mass 40 kg are together and at rest on a frozen pond. What is the initial momentum of the boy?
A. 0 kgm/s
B. 60 kgm/s
C. 100 kgm/s
D. 10 kgm/s
The initial momentum of the boy is 0 kgm/s the right option is A. 0 kgm/s.
Momentum can be defined as the product of mass and velocity. The S.I unit of momentum is kgm/s.
The initial momentum of the boy can be calculated using the formula below.
Formula:
M' = muWhere:
M = Initial momentum of the boyFrom the question,
Given:
M = mass of the boy = 60 kgU = Initial velocity of the boy = 0 m/s (at rest)Substitute these values into equation 1
M = 60(0)M = 0 kgm/sHence, The initial momentum of the boy is 0 kgm/s the right option is A. 0 kgm/s.
Learn more about momentum here: https://brainly.com/question/7538238
In an atom, what is the maximum number of electrons that can have the following quantum numbers?.
A force of 3000N is applied on a 20kg ball. Find the acceleration of the ball
Answer:
force = 3000N
mass= 20 kg
now
F= ma
3000= 20×a
3000÷20=a
a=15
F= ma by newtons second law of motion
If I throw a 10 kg ball with a force of 60 N, what will the ball's acceleration be?
Answer:
6
Explanation:
f=ma (from Newton's second law of motion)
In the water cycle we can observe transformations:
a) Permanent
b) Temporary
c) Chemical
d) None of the above
Answer:
b
Explanation:
temporary bc it's have time so the water can cycle
What are the 4 nitrogen bases in DNA? RNA?
Answer:
adenine, cytosine, uracil, and guanine.
Answer:
For DNA there is Adenine (A), Thymine (T), Guanine (G), and Cytosine (C)
For RNA there is Adenine (A), Uracil (U), Guanine (G), and Cytosine (C)
Explanation:
What is the rate of a chemical reaction?
a.the speed at which reactants change to products over a given time the speed at which reactants change to products over a given time
b. the amount of each reactant needed in relation to all the others the amount of each reactant needed in relation to all the others
c.the time it takes for all the reactants to become products the time it takes for all the reactants to become products
d. the energy cost to transform all reactants into products
Answer:
the speed at which reactants change to products over a given time
Explanation:
Correct
The electron geometry of carbon dioxide is...
1.tetrahedral
2.linear
3.planer
NEED ANSWER ASAP!!!!! 55 POINTS
8. Which elements are recycled during the processes of photosynthesis and cellular respiration?
oxygen, hydrogen, and nitrogen
carbon, nitrogen, and oxygen
carbon, hydrogen, and
oxygen
Answer:
The four substances recycled during photosynthesis and respiration are carbon dioxide, water, oxygen, and glucose.
So because you don't have all these choices, just pick, carbon, hydrogen, and oxygen, which is the last answer.
Thanks!
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~[tex]MiniMeteorologist\\[/tex]~
Answer:
carbon hydrogen and oxygen
Explanation:
PREDICT THE PRODUCTS AND BALANCE THE EQUATION
FeCl2 (aq)+K2NO3 (aq)
→
Answer:
see below
Explanation:
Swap cations and anions
K2NO3 is not balanced, it is either 2KNO3 or KNO3 and only 2KNO3 works in this case
FeCl2 (aq)+KNO3 (aq) → Fe(NO3)2 (aq) + 2KCL (aq)
what is the Lewis dot structure for NOH3
In this structure, Nitrogen (N) has a lone pair of electrons, Oxygen (O) has a lone pair of electrons, and each Hydrogen (H) atom has two electrons and no lone pairs.
The Lewis dot structure for [tex]NOH_{3}[/tex] (nitrosamine) can be determined by following a few steps:
Count the total number of valence electrons in the molecule. Nitrogen (N) contributes 5 valence electrons, Oxygen (O) contributes 6 valence electrons, and Hydrogen (H) contributes 1 valence electron each. So, the total number of valence electrons is:
5 (N) + 6 (O) + 3 (H) = 14 valence electrons.
Identify the central atom. In this case, Nitrogen (N) is the central atom since it can form more bonds compared to Oxygen (O).
Connect the atoms using single bonds. In [tex]NOH_{3}[/tex], Nitrogen (N) is bonded to Oxygen (O) and three Hydrogen (H) atoms.
Place the remaining electrons around the atoms to complete their octets. Start by filling the octet of the atoms bonded to the central atom, and then distribute the remaining electrons to satisfy the octet rule. If there are extra electrons, place them on the central atom.
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Science
As consumption of a synthetic material increases, the associated negative impacts to Earth required to produce the material increase.
O True
O False
Consumption of a synthetic material being increased, leads to an associated negative impacts to Earth required to produce it is a True statement.
What is a Synthetic material?There are the materials which are made by humans through chemical synthesis which are usually done in factories.
The production of this type of materials leads to the emission of chemicals and other gases which are harmful and negatively impacts the environment.
Read more about Synthetic material here https://brainly.com/question/24357817
What is the average “lifespan” of the following cells:
Red blood cell:
Brain cell:
Skin cell:
Heart muscle cell:
Fat cell:
How many moles of carbon dioxide can be formed by the decomposition of 5.0 moles of aluminium carbonate
Answer:
30 moles of CO₂
Explanation:
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draw arrows to show the path of the
electricity in this series circuit pls answer quickly as possible
Answer:
from positive to negative
calcium + sulfuric acid =
Answer:
Calcium metal will react with sulfuric acid to produce calcium sulfate solution, and hydrogen gas.
Please let me know if I'm wrong.
Answer:
The reaction between calcium and sulphuric acid produces calcium sulphate, a salt and hydrogen gas. It is a single displacement reaction.* Calcium is a metal.* Sulfuric acid as the name suggests is an acid.
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How many moles are in 5.4 x 10-7 grams of silicon dioxide, SiO2 ?
Answer:
there are [tex]\sf 9*10^{-9}[/tex] moles in grams [tex]\sf 5.4 * 10^{-9}[/tex] of silicon dioxide.
Explanation:
[tex]\boxed { \boxed{ \sf moles = \sf{\frac{mass}{Mr}} }}[/tex]
we should know that:
[tex]\sf molar \ mass \ of \ SiO2 = 60[/tex][tex]\sf given \ mass \ of \ SiO2 = 5.4 * 10^{-7}[/tex]using the formula:
[tex]\sf moles = \frac{mass}{Mr}[/tex]
[tex]\sf moles = \frac{5.4*10^{-7}}{60}[/tex]
[tex]\sf moles = 9*10^{-9}[/tex]
WARNING this is Not chemistry it is science
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