Na2SiO3 (s) + 8HF(aq) → H2SiF6 (aq) +2 NaF(aq) + 3H2O (l) 1.How many moles of HF are needed to react with 87.44 mol of Na2SiO3?

2.How many grams of NaF form when 0.94 mol of HF reacts with excess Na2SiO3?

3.How many liters of Na2SiO3 can react with 54.68 g of HF?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.