Explanation:
By Avagadro's Law,
V¹n¹ = V²n², where P and T are constant.
Therefore (4.00L)(0.200mol) = (3.25L)n²,
n² = 0.246mol. (3s.f.)
P.S. n² does not mean the square of n in this case, it is just a subscript.
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Combined Boyle's and Charles' gas law is used here. Therefore, 0.246mol of gas remain if some of the gas is released and the new volume is 3.25 L.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of ideal gas
V= volume of ideal gas
n =number of moles of ideal gas
T =temperature of ideal gas
R = Gas constant = 0.0821 L.atm/K.mol
By Avagadro's Law,
V₁n₁= V₂n₂, where P and T are constant.
V₁×n₁= V₂×n₂,
(4.00L)(0.200mol) = (3.25L)n²
n₂ = 0.246mol.
Therefore, 0.246mol of gas remain if some of the gas is released and the new volume is 3.25 L.
To learn more about ideal gas equation, here:
https://brainly.com/question/14826347
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What tuberculosis means "
Answer:
it is a infectiousr bacterial disease characterized by the growth of nodules(tubercles) in tissues especially the lungs
The pedigree diagram shows how a dominant trait is inherited in a family. The red circle and squares show family members with the trait. Based on the pedigree diagram, who must be heterozygous for the trait? A. The child with the trait B. The child without the trait C. Only one parent D. Both parents
Answer:
D
Explanation:
Correct on A P E X
How much heat is necessary to change 10.0g of water from 20 degrees celsius to 75 degrees celsius
Answer:
6
Explanation:
Place the following metals in order of most reactive to least:
Aluminium
Calcium
Copper
Iron
Magnesium
Sodium
Zinc
Answer:
Sodium
Calcium
Magnesium
Aluminium
Zinc
Iron
Copper
Explanation:
Do you think that it is necessary and/or important to take a multivitamin everyday to maintain optimal health? What might help you answer this question? What types of things might influence your decision to take a multivitamin every day?
What's ur opinion with explanation???????!!!!!!!!!!
Select all the correct answers.
Joshua dissolved sugar in water to create a sugar solution. His friend Ray tells him it’s a compound, but Joshua corrects him. Which words actually describe the sugar solution?
gas
liquid
mixture
solid
Answer:
liquid and mixure
Problems 4-6 convert the measurements into moles.
4. 9.03 x1023 C atoms
5. 2.44x1023 H2O molecules
6. 6.02x1023 Li atoms
Answer:
4. 1.5moles
5. 0.405moles
6. 1 mol
Explanation:
To find the number of moles in each susbtance in this question, we divide each number of atom/molecule measurement by Avagadro's number (6.02 × 10^23 atoms)
That is; nA = n × 6.02 × 10^23 atoms
n = nA ÷ 6.02 × 10^23 atoms
Where;
nA = number of atoms
n = number of moles
4.) n of Carbon = 9.03 x 10^23 ÷ 6.02 × 10^23
n = 1.5 × 10^ (23-23)
n = 1.5 × 10^0
n = 1.5 × 1
n = 1.5moles.
5.) n of H2O = 2.44 x 10^23 ÷ 6.02 × 10^23
n = 0.405 × 10^ (23-23)
n = 0.405 × 10^0
n = 0.405moles
6.) n of lithium = 6.02 x 10^23 Li atoms ÷ 6.02 × 10^23
n = 1 × 10^ (23-23)
n = 1 × 10^0
n = 1 mol
The specific heat capacity of copper is 0.385 J/(gK). If 353 J of heat are added to 3.6 moles of copper at 283 K, what is the final temperature of the sample of copper?
Answer:
287K
Explanation:
To find the increasing in temperature for the sample of copper we must use the equation:
Q = m*C*ΔT
Q is the heat added (353J)
m is the mass of copper (3.6mol * (63.546g / mol) = 228.8g
C is specific heat (0.385J/(gK))
And ΔT is the increasing in temperature.
Solving for ΔT:
Q / m*C = ΔT
353J /228.8g*0.385J/(gK) = 4.0K
That means the final temperature of copper is:
283K + 4K =
287Khello, please can you solve my question:
an atom contains 22 protons and 26 neutrons. What is it's mass number?
I will mark brainliest
Calculate the number of moles found in 88.02g of CO2
Answer:
2.00moles
Explanation:
mol=mass/mr
88.02/ [12+2(16)] = 2.00
Two siblings express different eye colors. The brother has brown eyes but the sister has blue eyes. Which statement explains why the siblings express different eye color? *
The brother received genes only from his father, and the sister received genes only from her mother.
The siblings each received a different combination of genetic information from their parents.
The brother received fewer genes from his other than his sister received.
Answer:
The siblings each received a different combination of genetic information from their parents.
Explanation:
What does evaporation do to salinity? Question 2 options: water molecules (H20) absorb energy where there are higher levels of evaporation, the water has greater salinity warmer water molecules move farther apart it does not impact salinity
Answer:
the water has greater salinity
Explanation:
The term "Salinity" refers to the amount of salt present in water. Recall that the amount of solute increases when the volume of solution decreases. This is because the amount of substance present in a solution depends on the volume of the solution.
Hence, as water evaporates, the volume of the solution decreases and the salinity (amount of salt present) increases.
Answer:
the water has greater salinity
Explanation:
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find the one out of place
How do I know if hand soap is working properly and how are some methods I can test it?
Answer:
Part A) By seeing if your hands are clean and dont have germs
Part B) Dip your hands in mud and then wash your hands to see results
Explanation:
Please help fast! I will give brainliest!
Answer:(c)
Explanation:
i am not sure i am thinking A and C
Answer:
I think so too
Explanation:
How could we separate the baking soda from the after after it had already been mixed in? helppp!!!
Answer:
i thing by filtering
Explanation:
9
A 75 gram sample of water is initially at 30 degrees Celsius. What would it's temperature be if
it absorbed 2000 J of heat?
Answer:
T2 = 36.38°C
Explanation:
Given data:
Mass of water = 75 g
Initial temperature = 30 °C
Final temperature = ?
Heat absorbed = 2000 J
Solution:
Specific heat capacity of water is 4.18 J/g.°C
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = Final temperature - initial temperature
2000 J = 75 g×4.18 J/g.°C × T2- T1
2000 J = 313.5 J/°C × T2- T1
2000 J = 313.5 J/°C × T2 - 30 °C
2000 J / 313.5 J/°C = T2 - 30 °C
6.38 °C = T2 - 30 °C
T2 = 6.38 °C + 30°C
T2 = 36.38°C
What type of atom is formed by the loss of one or more electrons?
An atom that loses one or more valence electrons to become a positively charged ion is known as a cation, while an atom that gains electrons and becomes negatively charged is known as an anion.
what is the full name of the compund CuSO4?
Please can you help me? (✿◡‿◡)
CuSO4 is Copper Sulphate.
Can someone help me answer this ASAP !!!
Answer: Chlorine I think
Explanation:
Chlorine is added to the water to kill germs. When it is added to a swimming pool, it forms a weak acid called hypochlorous acid that kills bacteria like salmonella and E.
Answer: Chlorine!
Explanation:
When it is added to a swimming pool, it forms a weak acid called hypochlorous acid that kills bacteria like salmonella and E. coli, as well as germs that cause viruses such as diarrhea and swimmer's ear.
how can I identify a salt compound is acidic,basic,neutral
Salts that are from strong bases and strong acids do not hydrolyze. Salts that are from strong bases and weak acids do hydrolyze, which gives it a pH greater than 7. Salts of weak bases and strong acids do hydrolyze, which gives it a pH less than 7.
A chemical reaction yields 1 mole of lithium hydroxide (LiOH). How many grams of
lithium hydroxide are present?
3 g
48 g
728
24 g
Mass of LiOH= 23.95 grams ≈ 24 g
Further explanationGiven
1 mole of lithium hydroxide (LiOH)
Required
Mass of LiOH
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
n = mass : molar mass
Input the value :
mass = n x molar mass
mass = 1 mole x 23,95 g/mol
mass = 23.95 grams ≈ 24 g
The mass of 1 mole LiOH has been 24 g. Thus, option D is correct.
The mass of a compound present in a mole of sample has been equivalent to the molar mass of the compound. The molar mass of the compound has been the sum of the constituent in a formula unit.
The molar mass of lithium hydroxide (mwt) has been given as:
[tex]mwt=m_L_i\;+\;m_O\;+\;m_H[/tex]
Where, the mass of Li is [tex]m_L_i=6.941\;\rm g[/tex]
The mass of oxygen is [tex]m_O=16\;\rm g[/tex]
The mass of hydrogen is [tex]m_H=1\;\rm g[/tex]
Substituting the values for molar mass (mwt) of LiOH:
[tex]mwt=6.941\;+\;16\;+\;1\;\text g\\mwt=23.941\;\text g\\mwt=24\;\text g[/tex]
The molar mass of LiOH has been 24 g.
The molar mass has been equivalent to the mass of 1 mole of sample. Thus, the mass of 1 mole LiOH has been 24 g. Thus, option D is correct.
For more information about mass of mole, refer to the link:
https://brainly.com/question/1370888
If the density is 0.9g/cm3 and the volume is 1.5cm3 ? What is the Mass?
Answer:
1.35g
Explanation:
times the density and volume together to get the mass
0.9 x 1.5 = 1.35g
(7th grade science question)
In baking and science, do you think it is better to measure loose solids (like flour or sugar) by volume or mass? Why?
Answer:
id say mass
Explanation:
but i d k
Why do chemical changes happen
Answer:
Reactions occur when two or more molecules interact and the molecules change. ... Bonds between atoms are broken and created to form new molecules. That's it.
Explanation:
PLs help mweee Ill mark brainliest
Answer:
I'm pretty sure that it's plate movement...
PLEASE HELP I WILL MARK AS BRAINLESS 12+ POINTS!!
Which of the following reasons BEST explains why thunderstorms are likely to form on a hot day?
A warm, humid air rises quickly and then condenses into rain clouds.
B) as air rises, it loses temperature and causes rain.
C the air is usually calm and allows the clouds to form
D the air drops quickly and forms low level cloud layers.
Answer:
A
Explanation:
The high humidity, in conjunction with warm temperatures, creates massive amounts of warm, moist air rising into the atmosphere, where it can easily form a thunderstorm. As the process of evaporation and condensation occurs, these droplets collide with other moisture that is condensing as it rises.
Which elements have similar chemical properties?
a) Na, K, Mg
b) B, Al, S
c) N, O, F
d) He, Ar, Kr
Answer:
d) He, Ar, Kr
Explanation:
To have similar chemical properties, elements must belong to the same period on the periodic table.
As a generally periodic trend, elements within the same group, have the same chemical properties.
So, the correct answer choice will draft elements from the same group.
He, Ar and Kr belongs to the group of elements called the noble gases. They are an unreactive group of elements. They are found in the last group on the periodic table. These elements do not readily combine with other elements.Answer:
D
Explanation:
What are polyatomic ions and how are they formed?
Answer:
Polyatomic ions are covalently bonded groups of atoms with a positive or negative charge caused by the formation of an ionic bond with another ion. Compounds formed from such ion combinations are called polyatomic ionic compounds, but the polyatomic ion behaves as a single uni
Explanation:
Which are characteristics of scientific questions? Check all that apply.
asking about subjective matters
having a wide focus on many topics
addressing a gap in knowledge
possibly leading to a testable hypothesis
already having fully confirmed explanationsWhy aren't descriptive investigations repeatable?
Answer:
asking about subjective matters
possibly leading to a testable hypothesis
addressing a gap in knowledge
I got soo confused about that last part. I didn't know if that was an option or something you needed to be answered.
Descriptive investigations are not repeatable because they are based only on observations made at a single point in time. The results may vary at a different time. In addition, descriptive investigations do not contain variables that may indicate cause-and-effect relationships.
Answer:
its N.N.November people
Explanation: