The direct change of a substance from a solid to a gas is called
a. evaporation
c. con...
Chemistry, 22.08.2019 13:30 eriksprincess13
The direct change of a substance from a solid to a gas is called
a. evaporation
c. condensation
b. sublimation
d. solidification
Answers: 2
Chemistry, 21.06.2019 15:50
Which of these reactions are redox reactions? check all that apply.cd + hcl → cdcl2 + h2cucl2 + na2s → 2nacl + cuscaco3 → cao + co2 2zns + 3o2 → 2zno + 2so2 ch4 + 2o2 → co2 + 2h2o
Answers: 3
Chemistry, 22.06.2019 17:00
The biosphere of the earth is made up of what compound? organic or inorganic?
Answers: 3
Chemistry, 22.06.2019 18:50
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
Chemistry, 23.06.2019 00:40
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.
Answers: 1
Mathematics, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Chemistry, 04.02.2021 04:50
Chemistry, 04.02.2021 04:50
History, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
English, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50
Biology, 04.02.2021 04:50
Mathematics, 04.02.2021 04:50