What are the most chemically active metals located on the periodic table
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What is the pressure, in atm, of the methane gas?
Express the answer using 3 significant figures.
atm
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Answer:
P = 0.979 atm
Explanation:
Given data:
Number of moles of methane = 40.8 mol
Volume of container = 1020 L
Temperature = 298 K
Pressure of gas =?
Solution:
According to ideal gas equation,
PV = nRT
P = pressure
V = volume
n = number of moles
R = general gas constant
T = temperature
Now we will put the values,
P = nRT/V
P = 40.8 mol × 0.0821 atm.L/mol.K × 298 K / 1020 L
P = 998.2 atm /1020
P = 0.979 atm
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Answer:
46
Explanation:
Sodium metal has a molar mass of
22.99
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Answer : The number of moles of is,
moles.
Solution :
As we know that,
1 mole contains number of molecules
As, number of molecules of
are present in 1 mole of
So, number of molecules of
are present in
moles of
Therefore, the number of moles of is,
moles.
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well i think what you do first is that you would divide that number of amu by 6.02 x 10^23 and that will get you the number of moles of H2. once you have the number of moles you divide the number of moles by the molar mass of H2 and that should give you the grams. i’m trying to explain this as best as possible sorry if ur still confused.
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Hope that helped! =)
Answers
Answer:
Sr(s) + F₂(g) → SrF₂(s)
Explanation:
- A balanced equation is an equation that has an equal number of atoms of elements on either side of the equation.
- Chemical equations are balanced to obey the law of conservation of mass which states that the mass of reactants and that of the product should always be equal in chemical reactions.
- Therefore, the balanced chemical equation for the reaction between Sr and F₂ is given by;
Sr(s) + F₂(g) → SrF₂(s)
- Each side of the equation has 1 atom of Sr and two atoms of F thus the equation is balanced.
Final answer:
Solid Strontium reacts with Fluorine gas in a synthesis reaction to form Strontium Fluoride. The balanced chemical equation is Sr (s) + F2 (g) -> SrF2 (s).
Explanation:
The reaction of solid strontium (Sr) with fluorine gas (F2) is a synthesis reaction, and it forms strontium fluoride (SrF2). The balanced chemical equation for this reaction is:
Sr (s) + F2 (g) → SrF2 (s)
In this equation, 's' stands for solid, 'g' stands for gas, and the arrow ( → ) indicates the direction of the reaction from reactants to products.
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