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STALIN [3.7K]
3 years ago
15

Evidence of a chemical change would be a ___________________. Question options: spinning top. rusting car fender. spilled bucket

of water. melting popsicle.
Chemistry
1 answer:
Vikki [24]3 years ago
6 0
The answer is the second option "rusting car fender." Hope this helps.
 (ノ◕ヮ◕)ノ*:・゚✧
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____ occurs when the vapor pressure of a liquid is equal to the external atmospheric pressure.
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Boiling

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Which change absorbs heat?
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Using a Laptop computer

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B. the aldaric acid of l-idose is the same as the aldaric acid of which sugar?
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3 0
3 years ago
A 4.86-gram sample of calcium reacted completely with oxygen to form 6.80 grams of calcium oxide. This reaction is represented b
sesenic [268]
The number of mole of Ca reacted is:
4.86 g Ca/ (40.08 g/mol Ca)= 0.121 mol Ca

Because Ca reacted completely with oxygen and there is 2 mol Ca, there is 1 mol O2 reacted.

Total mass of oxygen that reacted is:
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8 0
3 years ago
Identify the correct descriptions of beta particles.
FrozenT [24]

Answer:

a. A beta particle has a negative charge. d. A beta particle is a high-energy electron.

Explanation:

Identify the correct descriptions of beta particles.

a. A beta particle has a negative charge. YES. A beta particle is originated in the following nuclear reaction: ¹₀n ⇒ ¹₁H + ⁰₋₁e (beta particle.)

b. A beta particle contains neutrons. NO. It is a electron originated in the nucleus.

c. A beta particle is less massive than a gamma ray. NO. Gamma rays don't have mass while a beta particle has a mass which is half of one thousandth of the mass of a proton.

d. A beta particle is a high-energy electron. YES. Beta particles are nuclear originated hig-energy electrons.

6 0
3 years ago
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