Chemistry, 20.07.2019 08:00 Nerdylearner8639
Select all that apply. which of the following measurements have 1 significant figure? 0.007 7000 7000.0 7
Answers: 1
Chemistry, 22.06.2019 09:00
Achemist 16 drop copper metal from copper chloride solution. the chemist place is 0.50 g of aluminum foil in a solution containing 0.75 g of copper (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction?
Answers: 1
Chemistry, 22.06.2019 12:30
Nebulae are enormous clouds in outer space. they are made mostly of hydrogen gas, helium gas, and dust. some nebulae glow brightly, while others do not. the stars that people see are huge, bright balls of glowing gas. they are made mostly of hydrogen and helium. which statement correctly describes other ways in which nebulae and stars are different? a. stars can form inside a nebula but a nebula can never be produced by any star. b. a star always has a higher density than a nebula. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star.
Answers: 3
Chemistry, 22.06.2019 18:00
How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.
Answers: 3
Chemistry, 22.06.2019 19:20
For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)
Answers: 1
Select all that apply. which of the following measurements have 1 significant figure? 0.007 7000 70...
Chemistry, 14.02.2021 08:50
Chemistry, 14.02.2021 08:50
Health, 14.02.2021 08:50
Chemistry, 14.02.2021 08:50
Chemistry, 14.02.2021 08:50
Health, 14.02.2021 08:50
Mathematics, 14.02.2021 08:50
Social Studies, 14.02.2021 08:50
Mathematics, 14.02.2021 08:50
Physics, 14.02.2021 08:50
Mathematics, 14.02.2021 08:50
Social Studies, 14.02.2021 08:50