Chemistry, 14.12.2019 03:31 KnMcdonaldk93906
Odetermine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measure its heat capacity. she first weighs the rock and finds it has a mass of 4.7 g. she then finds that upon absorption of 57.2 j of heat, the temperature of the rock rises from 25 °c to 57 °c. find the specific heat capacity of the substance composing the rock and determine whether the value is consistent with the rock being pure gold.
Answers: 3
Chemistry, 23.06.2019 00:30
Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element
Answers: 1
Chemistry, 23.06.2019 04:00
How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj
Answers: 1
Chemistry, 23.06.2019 06:00
When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.
Answers: 1
Chemistry, 23.06.2019 08:40
Which statement is true according to the kinetic theory? a. molecules of different gases with the same mass and temperature always have the same average density. b. molecules of different gases with the same mass and temperature always have the same average volume. c. molecules of different gases with the same mass and temperature always have the same pressure. d. molecules of different gases with the same mass and temperature always have the same molecular mass. e. molecules of different gases with the same mass and temperature always have the same average kinetic energy.
Answers: 1
Odetermine whether a shiny gold-colored rock is actually gold, a chemistry student decides to measur...
Biology, 18.12.2019 08:31
Chemistry, 18.12.2019 08:31
Physics, 18.12.2019 08:31
Mathematics, 18.12.2019 08:31
Mathematics, 18.12.2019 08:31
Mathematics, 18.12.2019 08:31
Biology, 18.12.2019 08:31
Mathematics, 18.12.2019 08:31
History, 18.12.2019 08:31
Social Studies, 18.12.2019 08:31
History, 18.12.2019 08:31
Mathematics, 18.12.2019 08:31