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3 years ago

Which atoms has the same numbers of protons and neutrons

Chemistry

1 answer:

Luda [366]3 years ago

5 0

Explanation:

<em>Generally, the light nuclei atoms have the same number of protons and neutrons in the nuclear composition. They have a proton to neutrons ratio of almost or equal to 1 because in such a way the nucleus can achieve stability.A lot of elements have the composition of protons and neutrons as same.Dueterium - 1 p and 1 n.Helium - 2 p and 2 n.Carbon - 6 p and 6 n.Nitrogen - 7 p and 7 n.</em>

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Answer:

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2 years ago

6 Fe2+ (aq) + Cr2O72− (aq) + 14 H+ (aq) → 6 Fe3+ (aq) + 2 Cr3+ (aq) + 7 H2O (aq) If the titration of 23 mL of an iron(II) soluti

ratelena [41]

Answer:

1.047 M

Explanation:

The given reaction:

$6Fe^{2+}_{(aq)}+Cr_2O_7^{2-}_{(aq)}+14H^+_{(aq)}\rightarrow 6Fe^{3+}_{(aq)}+2Cr^{3+}_{(aq)}+7H_2O_{(aq)}$

For dichromate :

Molarity = 0.254 M

Volume = 15.8 mL

The conversion of mL to L is shown below:

1 mL = 10⁻³ L

Thus, volume = 15.8 ×10⁻³ L

Thus, moles of dichromate :

$Moles=0.254 \times {15.8\times 10^{-3}}\ moles$

Moles of dichromate = 0.0040132 moles

1 mole of dichromate react with 6 moles of iron(II) solution

Thus,

0.0040132 moles of dichromate react with 6 × 0.0040132 moles of iron(II) solution

Moles of iron(II) solution = 0.02408 moles

Volume = 23 mL = 0.023 L

Considering:

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

<u>Molarity = 0.02408 / 0.023 = 1.047 M</u>

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3 years ago

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Explanation:

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3 years ago

Which atoms has the same numbers of protons and neutrons​

Which atoms has the same numbers of protons and neutrons