percent composition
what is percent composition?
percent by mass of each element in a compound.
Empirical formula for magnesium oxide
MgO
What is avogadro's number?
6.022x10^23
4NH3(g)+7O2(g)--> 4NO2(g)+6H20(l)
According to the above reaction, what volume of NO2(g) is produced from the combustion of 100 g of NH3(g), assuming the reaction takes place at standard temperature and pressure?
132 L NO2 (g)
What is a limiting reactant?
limits that amount of product to be formed.
what is the percent composition of Br when c id 85.5% and p is 11.5%?
3%
What is the empirical formula for glucose?
CH2O
Convert the grams of Aluminum to liters using the equation. 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)
2.49 L H2
2KClO3→2KCl+3O2
What mass of potassium chlorate is required to produce 3.00 L of oxygen at STP?
10.8 g KClO3
If 2.50 g of CO2 are isolated, after carrying out the above reaction, calculate the percent yield of
92.3%
what percent is phosphorus when oxygen is 23% and carbon is 47%
30%
What is the empirical formula of C6H2F8S2
C3H1F4S1
What us the molar mass of water?
18.01528 g/mol
What is the formula for % yield?
Actual yield/Theoretical Yield X 100%
what is the first step in percent composition
percent to mass
What is the empirical formula of C6H2P?
C12H4P,
How many grams of methanol are produced from 42.1 grams of CO and excess H2. equation is CH3OH -> CO + H2
48.2 g CH3OH
Analysis of a 12.04-g sample of a liquid compound composed of carbon, hydrogen, and nitrogen showed it to contain 7.34 g C, 1.85 g H, and 2.85 g N. What is the percent composition of this compound?
61.0% C, 15.4% H, 23.7% N
What is the molecular formula of C2HP4
C4H2P8
Calcium metal reacts with water to form hydrogen gas and calcium hydroxide how many moles of hydrogen will be made if 85 grams of calcium
152.10 Ca