The absolute temperature of a gas is directly related to average molecular kinetic Energy law.
The amount of grams the student gained is 997.9 grams
<h3>Data obtained from the question</h3>
From the question given above, the following data were obtained:
- Mass (in lb) = 2.2 lb
- Mass (in grams) =?
<h3>How to convert 2.2 lb to grams</h3>
The mass gained in grams can be obtained by simply converting 2.2 lb to grams. This is illustrated below:
1 lb = 453.592 grams
Therefore,
2.2 lb = (2.2 lb × 453.592 grams) / 1 lb
2.2 lb = 997.9 grams
Thus, the number of grams the student gained is 997.9 grams
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Answer: D. The energy required to boil a substance
Explanation: I just took the quiz and got it correct :)
Answer;
No, sometimes it just causes a physical change, such as ice melting to water.
Explanation;
-The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
Heating a substance may cause a physical change or a chemical change. For example melting ice to water, involves supplying heat to change ice into water which is a chemical change.
-On the other hand, an example of decomposition reactions are chemical reactions which involves supplying heat to a substance; for example decomposing copper (II) nitrate which yields, copper (ii) oxide, nitrogen (iv) oxide and oxygen gas, is chemical reaction.