List and describe two differences between pure substances and mixtures. Check all that apply. Check all that apply. The composition of a pure substance depends on the source, but the composition of a mixture doesn't depend on the source. The composition of a pure substance is always the same, regardless of the source, but the composition of a mixture can vary. The state of a pure substance is always the same, but the state of a mixture can vary. Mixtures can be separated into their components only by chemical changes; some pure substances can be separated into components by physical change. Mixtures can be separated into their components by physical changes; some pure substances can be separated into components by chemical change.
Answers: 3
Chemistry, 21.06.2019 22:20
Calcium hydride (cah2) reacts with water to form hydrogen gas: cah2(s) + 2h2o(l) → ca(oh)2(aq) + 2h2(g) how many grams of cah2 are needed to generate 45.0 l of h2 gas at a pressure of 0.995 atm and a temperature of 32 °c?
Answers: 2
Chemistry, 22.06.2019 16:30
For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.
Answers: 2
Chemistry, 22.06.2019 21:30
Which of the following changes will decrease the total amount of gaseous solute able to be dissolved in a liter of liquid water? (2 points) decreasing temperature decreasing pressure decreasing surface area decreasing solute concentration
Answers: 1
List and describe two differences between pure substances and mixtures. Check all that apply. Check...
Mathematics, 03.12.2020 14:20
English, 03.12.2020 14:30
Mathematics, 03.12.2020 14:30
English, 03.12.2020 14:30
Social Studies, 03.12.2020 14:30
Social Studies, 03.12.2020 14:30
Physics, 03.12.2020 14:30
Mathematics, 03.12.2020 14:30
Engineering, 03.12.2020 14:30
Mathematics, 03.12.2020 14:30
History, 03.12.2020 14:30
History, 03.12.2020 14:30
Computers and Technology, 03.12.2020 14:30