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Eddi Din [679]
3 years ago
6

2. What effect does adding a neutron have on the atom’s mass?

Chemistry
1 answer:
anyanavicka [17]3 years ago
7 0
It does<span>, however, change the </span>mass<span> of the nucleus. </span>Adding<span> or removing </span>neutrons<span>from the nucleus are how isotopes are created. Protons carry a positive electrical charge and they alone determine the charge of the nucleus.</span>
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Answer:

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Explanation:

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2 years ago
John dissolves .5g of a white powder in 25g of benzene (FP 5oC) (kf benzene is 5.1) and finds the solution freezes at 3.7oC. Det
navik [9.2K]

Answer:

The compound has a molar mass of 78.4 g/mol

Explanation:

Step 1: data given

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Mass of benzene = 25 grams

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Step 2: Calculate molality

ΔT = i*Kf*m

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⇒with m = the molality

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m = 1.3 / 5.1

m = 0.255 moles /kg

Step 3: Calculate moles

Molality = moles / mass benzene

0.255 molal = moles / 0.025 kg

Moles = 0.255 molal * 0.025 kg

Moles = 0.006375 moles

Step 4: Calculate molar mass of the compound

Molar mass compund = mass / moles

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Molar mass compound = 78.4 g/mol

The compound has a molar mass of 78.4 g/mol

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Answer:

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2 years ago
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7 0
2 years ago
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