Answer:
9.9 moles of CuF
Explanation:
Given data:
Number of molecules of CuF = 6.02×10²⁴
Number of moles of CuF = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
For CuF:
6.02×10²⁴ molecules× 1 mol / 6.022 × 10²³ molecules
0.99 ×10¹ mol
9.9 moles of CuF
Answer:
kilograms of sulfur will be emitted from coal plants in two weeks
Explanation:
Power produced by power plants in the United States :P
P=
1 Joule = Watts × Seconds
Watts = Joule/Second
P=
This means that Joules of enrgy is produced in one second.
So, energy produced in 2 week:
1 week = 7 days
1 day = 24 hours
1 hour = 3600 seconds
2 week = 2 × 7 × 24 × 3600 s=1,209,600 s
Energy produced in 1,209,600 s: E
Coal has an energy content =
Mass of coal used while producing E amount of energy: m
Percentage of sulfur in coal = 4% by mass
Mass of sulfur produced from in 2 weeks:
Answer:
either i have no brain or im over thinking it
Explanation:
Answer:
14.3 Litres
Explanation:
Standard temperature and pressure denotes that a gas has the following:
P = 1 atm
T = 273K
According to this question, the mass of CO2 is 28g.
Using mole = mass/molar mass
Molar mass of CO2 = 12 + 16(2)
= 12 + 32
= 44g/mol
Mole = 28/44
= 0.64mol
To calculate the volume of CO2 at STP, we use the general gas law equation as follows:
PV = nRT
R = Gas law constant = 0.0821 Latm/molK
V = nRT/P
V = 0.64 × 0.0821 × 273/ 1
V = 14.3/1
V = 14.3 Litres