Which law represents a balanced chemical equation?
A.
Avogadro’s hypothesis
B.
...
Answers: 2
Chemistry, 22.06.2019 02:30, drivinghydra
What is the relation between concentration of reactants and the rate of chemical reaction?
Answers: 1
Chemistry, 22.06.2019 07:30, kimberlyrios12p0ts98
Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?
Answers: 2
Chemistry, 22.06.2019 09:30, jewelz5887
1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle
Answers: 1
Chemistry, 22.06.2019 11:40, Wemaybewrong
Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)
Answers: 1