What is one similarity between metals and metalloids?
A) They are both durable
B) They are b...
Chemistry, 23.09.2021 02:50, patrickdolano
What is one similarity between metals and metalloids?
A) They are both durable
B) They are both ductile
C) They are both malleable
D)They both conduct electricity
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
Chemistry, 22.06.2019 15:00, hockeykid7583
Which are forms of frozen water? check all that apply. dew frost hail rain sleet
Answers: 2
Chemistry, 23.06.2019 00:00, sanaiajohnson56
In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above
Answers: 3
Mathematics, 14.07.2021 23:30
Mathematics, 14.07.2021 23:30
Chemistry, 14.07.2021 23:30
Mathematics, 14.07.2021 23:30