How many moles of gas were added to the bottle
A gas bottle contains 0.650 mol of gas at 730 mm Hg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle? a) 0.128 mol b) 0.630 mol c) 1.19 mol d) 1.28 mol.
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What mass of sodium chloride, NaCl, is needed to make 389. g of a 3.89%(m/m) NaCl solution? (atomic masses: Na = 22.99, Cl = 35.45)
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A gas bottle contains 0.650 mol of gas at 730 mm Hg pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle?
A tiny speck of radioactive Americium-241 (241.06 g/mol) is used in smoke detectors. what is the mass in mg of 2.5 x 10^18 atoms of Americium-241 present in these smoke detectors?
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What is the pH of the solution resulting from the addition of 40.0 mL of 0.200 M HClO4 to 20.0 mL of 0.150 M NaOH?
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