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ikadub [295]
3 years ago
13

A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?

Chemistry
1 answer:
nataly862011 [7]3 years ago
8 0

Answer:

Na

Explanation:

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Central and South American forests.

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a sample of double-stranded dna contains 42% cytosine. approximately what percent of the nucleotides in this sample will be thym
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1 year ago
Write a balanced net ionic equation to show why the solubility of Cu(OH)2(s) increases in the presence of a strong acid and calc
Helga [31]

Answer:

2.2×10^8

Explanation:

Cu(OH)2(s)<---------> Cu^2+(aq) + 2OH^-(aq) Ksp=2.2 x 10 ^-20

2H3O^+(aq) + 2OH^-(aq) <-------> 4H2O(l). Kw= 1×10^14

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Overall ionic reaction:

Cu(OH)2(s) +2H3O^+(aq) <---------> [Cu(H20)4]^2+(aq)

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Keq= 2.2×10^8

Kw= ion dissociation constant of water

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2 years ago
A silver ring has a mass of 138.45 g. how many calories of heat are required to increase the temperature from 11.8 c to 162.5 c?
garik1379 [7]

A heat energy of 645

5 0
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Read 2 more answers
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