Water is a substance made up of the elements hydrogen
and oxygen.
How many types of atoms mak...
Chemistry, 23.12.2020 07:30 cheyennemitchel238
Water is a substance made up of the elements hydrogen
and oxygen.
How many types of atoms make up a particle of water?
A. 2
B. 3
C. 4
D. 1
Answers: 3
Chemistry, 22.06.2019 03:30
If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.
Answers: 1
Chemistry, 22.06.2019 05:50
What are transitions between a liquid and a solid called? identify which way they are transitioning
Answers: 2
Chemistry, 22.06.2019 11:40
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
Mathematics, 31.03.2020 03:24
History, 31.03.2020 03:24
Mathematics, 31.03.2020 03:25
Mathematics, 31.03.2020 03:25