Answer:
12.4g of water has 0.689 moles of water.
Explanation:
Molar weight of 
= 16 + 2 = 18g
One mole of weighs 18g.
Hence, 12.4g of water has 0.689 moles of water.
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A scientific theory is a specific type of theory used in the scientific method. The term "theory" can mean something different, depending on whom you ask.
Answer:
n = 3.0 moles
V = 60.0 L
T = 400 K
From PV = nRT, you can find P
P = nRT/V = (3.0 mol)(0.0821 L-atm/K-mol)(400 K)/60.0L
P = 1.642 atm = 1.6 atm (to 2 significant figures)
Explanation:
