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Whitepunk [10]
3 years ago
7

Scientists are often interested in knowing the molar heat of combustion the heat released during the combustion of one molar of

a substance use a periodic table to find molar masses.
How many moles of ethanol are present in the sample?

? Mol
Chemistry
2 answers:
Butoxors [25]3 years ago
6 0

Answer:

.004993

Explanation:

lozanna [386]3 years ago
6 0

Answer: .004993

Explanation:

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sattari [20]

Answer/Explanation:

Heat from the sun hits the ground and is absorbed. The higher you go, it gets more colder due to the fact that the air doesn't hold onto the radiation as it goes straight through the ground, which is why the top of mountains are very cold, and people are able to die in minutes.

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2 years ago
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Calcium (Ca²⁺)

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It is needed for the strong bones.

It is very important to maintain the bones in order to support our skeleton.

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5 0
3 years ago
O, li, c which electrons experience the greatest effective nuclear charge? express your answer as a chemical formula.
Nataly_w [17]
<span>The effective nuclear charge of an atom = total electrons - inner electrons For O, ENC = 8 - 2 = 6 For Li, ENC = 3 - 2 = 1 For C, ENC = 6 - 2 = 4 The electrons in O experience the greatest effective nuclear charge and that is why O is smaller than C (which is smaller than Li).</span>
5 0
3 years ago
How would the addition of protons affect the concentration of CH3COOH? How would the addition of OH– affect the amount of CH3COO
Deffense [45]

Answer:

1) increase concentration

2) decrease the amount

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4) it would increase

Explanation: edge 2021

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