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natta225 [31]
3 years ago
9

Four atoms have the numbers of protons and neutrons given below.

Chemistry
1 answer:
Makovka662 [10]3 years ago
3 0

Answer:

W and X

Explanation:

isotopes : are masses of atoms with the same number of proton and electron but different neutron .

W and X have the same number of protons and different number of neutrons.

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Write, Balance and Label the type of reaction: Potassium Hydroxide plus phosphoric acid yields potassium phosphate and water.
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KOH + H3PO4 = KH2PO4 +H2O

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Morphine is a well known pain killer but is highly addictive. The lethal dose of morphine varies from person to person based on
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Answer:

0.252 milimoles

Explanation:

To convert mass of a substance to moles it is necessary to use the molar mass of the substance.

The formula of morphine is C₁₇H₁₉NO₃, thus, its molar mass is:

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204.17 + 19.19 + 14 + 16 = <em>285.36g/mol</em>

Thus, moles of 71.891 mg = 0.071891g:

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As 1 mole = 1000 milimoles:

2.5193x10⁻⁴ moles = <em>0.252 milimoles</em>

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Explanation:

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