The mineral enargite is 48.41% cu, 19.02% as, and 32.57% s by mass. what is the empirical formula of enargite?
1 answer:
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Hello!
To find the mass in grams of 2.00 * 10²³ molecules of F₂ you'll need to apply the Avogadro's number, which tells the number of molecules in a mol of a substance, and the Molar Mass, which tells the weight of a mole of a substance. These two quantities are used in the following conversion factor:
So, the mass of 2.00 * 10²³ molecules of F₂ is 12,51 g
Have a nice day!
To find the mass in grams of 2.00 * 10²³ molecules of F₂ you'll need to apply the Avogadro's number, which tells the number of molecules in a mol of a substance, and the Molar Mass, which tells the weight of a mole of a substance. These two quantities are used in the following conversion factor:
So, the mass of 2.00 * 10²³ molecules of F₂ is 12,51 g
Have a nice day!
Answer:
232.9K
Explanation:
V₁ = 5dm³
P₁ = 0.92atm
T₂ = 30°C
V₂ = 5.7L
P₂ = 800mmHg
Unknown:
T₁ = ?
Solution:
To solve this problem, we are going to apply the combined gas law which is fusion of the avogadro's law, boyle's law and charles's law.
Mathematically;
p, v and T are pressure, volume and temperature respetively
1 and 2 depicts the initial and final states.
We need to convert ;
temperature to K and pressure into atm
T₂ = 30°C = 273 + 30 = 303K
P₂ = 800mmHg;
760mmHg = 1 atm
800mmHg = = 1.05atm
Input the variables and solve;
T = 232.9K