Chemistry, 27.09.2021 15:40 eskarletche8
1) A sample of sodium dichromate, Na2Cr2O7, contains 0.414 moles.
2) A sample of dinitrogen trioxide, N2O3, contains 2.078 moles. How much does the sample weigh, in grams?
3) A sample of potassium sulfate, K2SO4, weighs 75.43 grams. Convert this moles.
Be sure to include a unit with your answer.
4) 2,4,6-trinitrotoluene, better known as TNT, is used as an explosive. TNT has the formula C7H5(NO2)3. Convert a sample of TNT that weighs 36.22 grams to moles.
Be sure to include a unit with your answer.
Answers: 2
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An engineer decides to use a slightly weaker material rather than a stronger material, since she knows that the stronger material can break suddenly. this is an example of what? a choosing a material that will show warning before it fails b using composite materials that combine strength c using a material for multiple applications d using design techniques that increase efficiency and reduce cost
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How does a nuclear reactor produce electricity? a. high-energy gamma rays are converted by a generator into electricity. b. the heat from the reaction turns water to steam, which runs a generator. c. the reaction produces a stream of electrons that flow through wires and into batteries. d. the heat released from the reaction is used to burn coal or gas to produce electricity. e. control rods absorb the neutrons emitted and release a stream of electrons as electricity.
Answers: 1
1) A sample of sodium dichromate, Na2Cr2O7, contains 0.414 moles.
2) A sample of dinitrogen triox...
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