Question 22
2 pts
Consider the below unbalanced chemical equation. What mass of iron can be p...
Chemistry, 22.12.2020 09:10 nattalliiee67
Question 22
2 pts
Consider the below unbalanced chemical equation. What mass of iron can be produced from 50.0 g
of iron oxide and 50.0 g of carbon monoxide?
Fe2O3 + CO → Fe + CO2
Question 23
2 pts
The combustion of butane releases 2877 kJ/mol of heat energy. What mass of butane is needed to
generate 20 kJ of energy? Please report your answer in milligrams.
Question 24
2 pts
Consider a particular reaction that has an activation energy of 500 kJ and an enthalpy of reaction of
+150 kJ. When a catalyst is added to the reaction, the new activation energy is measured to be 400
kJ.
What is the enthalpy of reaction for the catalyzed reaction? Please answer in kJ.
O
Answers: 3
Chemistry, 22.06.2019 08:00
Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.
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 19:50
When the mercury level in a barometer decreases that atmospheric pressure has
Answers: 3
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