What do physical changes do?
A) alter the chemical structure of a substance
B) becomes...
Chemistry, 05.05.2020 07:24 mikayla843
What do physical changes do?
A) alter the chemical structure of a substance
B) becomes a new chemical substance
C) increase the total mass of a substance
D) affect the size, shape, and phase of a substance
Answers: 1
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In 2002, the rare earth elements mine in mountain pass, california was closed because
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How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)
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Chemistry, 22.06.2019 12:20
Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.
Answers: 1
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A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?
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