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Juliette [100K]
3 years ago
12

Question 3 Multiple Choice Worth 1 points)

Chemistry
1 answer:
OLga [1]3 years ago
5 0

Answer:

the asnwer is B

Explanation:

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What error in the data is likely to occur if the hydrated salt is heated strongly
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If the hydrated salt is overheated, it causes the anhydrous salt to decompose, causing the product to be lost as gas. The reported percentage of water loss will be too high because the gap between the initial measurement and final (which will be lower due to loss of sample) measurement will widen.

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When formic acid is heated, it decomposes to hydrogen and carbon dioxide in a first-order decay: . . HCOOH(g) →CO2(g) + H2 (g) .
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We are given with the reaction HCOOH(g) →CO2(g) + H2 (g). According to Dalton's law, the total pressure of a vessel is equal to the sum of the partial pressure of the components inside it. In this case, we plot first the data ln (ratio partial pressure of HCOOH to total pressure) vs time. Partial pressure is the difference of pressure (from one point to another). In this case, the equation is ln P(HCCOH) = -0.0146t - 0.2281 where R² = 0.9923. K is equal to <span> -0.0146 s-1. When the total pressure is 291, ln P is -0.66938, thus the time is 30.23 seconds. The half life is ln(0.5)/k equal to 47.46 seconds.</span>
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en el átomo la suma entre el número de protones ( número atómico) y el número de neutrones, se denomina ​
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the sequence of stages an organisms go through from one generation to the next lace where an organism lives is called in​
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