Which of the following is NOT considered as a characteristic of living
things? *
O A. made of...
Answers: 1
Chemistry, 22.06.2019 07:40
21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8
Answers: 2
Chemistry, 22.06.2019 09:00
Identify the electromagnets with poles that are reversed from the electromagnet shown above
Answers: 3
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, 14.01.2021 06:40
Arts, 14.01.2021 06:40
Mathematics, 14.01.2021 06:40
English, 14.01.2021 06:40
English, 14.01.2021 06:40
Mathematics, 14.01.2021 06:40
Health, 14.01.2021 06:50
Mathematics, 14.01.2021 06:50
Mathematics, 14.01.2021 06:50
Social Studies, 14.01.2021 06:50
Biology, 14.01.2021 06:50
Mathematics, 14.01.2021 06:50
Biology, 14.01.2021 06:50
Geography, 14.01.2021 06:50