Which process results in a chemical change?
a) tearing tin foil
b) melting an iron bar...
Chemistry, 19.08.2019 02:20 Hrjohnson2004
Which process results in a chemical change?
a) tearing tin foil
b) melting an iron bar
c) crushing an aluminum can
d) burning magnesium ribbon
Answers: 2
Chemistry, 21.06.2019 22:20
Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?
Answers: 2
Chemistry, 22.06.2019 21:30
Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration
Answers: 1
Chemistry, 22.06.2019 22:30
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