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Leto [7]
3 years ago
15

The first law of thermodynamics states that ΔE=Q-W. How is this also a statement of the principle of conservation of energy?

Chemistry
2 answers:
Korolek [52]3 years ago
6 0

Answer:

c

Explanation:

yaroslaw [1]3 years ago
4 0
Hello I took this test just now and got 100% your correct answer would be C. Hope this helps.
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4 0
2 years ago
What is the percentage of nitrogen, by mass, in calcium nitrate?.
SCORPION-xisa [38]

Answer:

<em>Nitrogen = 17.07%</em>

Explanation:

We are asked to calculate the percentage by mass of nitrogen in Ca(NO3)2.

The molar mass of calcium nitrate is 164,088 g/mol.

In this 164.088 g/mol there are 2 nitrogen atoms.

Molar mass of nitrogen = 14,0067 g/mol

% Nitrogen = molar mass of N/total molar mass of the compound

% Nitrogen =[(2 x 14.0067)/164.088]*100

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7 0
2 years ago
Why must all chemical equations be balanced?
Lera25 [3.4K]
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8 0
3 years ago
What is the product of the reaction of an alcohol and a carboxylic acid when heated together
natulia [17]

Answer:

Explanation:

The direct reaction of a carboxylic acid with an amine would be expected to be difficult because the basic amine would deprotonate the carboxylic acid to form a highly unreactive carboxylate. However when the ammonium carboxylate salt is heated to a temperature above 100 C water is driven off and an amide is formed.

5 0
2 years ago
What is missing from this graph?<br><br> A. axis labels<br> B. a trendline<br> C. a title
Iteru [2.4K]

Answer:

Axis Labels

Explanation:

The axis labels are usually located on the x and y axis. This graph however is missing those.

hope this helps!

7 0
3 years ago
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