1 5 points
A sample of gas has a volume of 51 L at the temperature 21 C and a pressure of 6.3 atm. The molar mass of the sample is 71,3 g/mol. The total mass of the sample is
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Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.