Chemistry, 29.06.2021 20:00 bsheepicornozj0gc
If the density of an unknown gas Zis 4.50 g/L at STP, what is the molar mass of gas Z?
0.201 g/mol
26.9 g/mol
5.00 g/mol
101 g/mol
Answers: 2
Chemistry, 22.06.2019 16:00, hjgjlgkjg
Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
Answers: 1
Chemistry, 22.06.2019 16:30, montanolumpuy
How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4
Answers: 3
If the density of an unknown gas Zis 4.50 g/L at STP, what is the molar mass of gas Z?
0.201 g/mol<...
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