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Answer:
hair is a physical change.
Cooking is a physical and chemical change.
Ice cream melting in the sun is a physical change.
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Answer:
Explanation:
Any densities less than 1g/cm3 will float, while objects with densities over 1g/cm3 will sink.
The theoretical yield is the reaction yield that measures the product of the reaction from the conversion of the limiting reagent. The theoretical yield is 160 gm.
<h3>What is mass?</h3>
Mass or the theoretical yield is the result of the multiplication of mole and the molar mass of the compound.
The reaction between hydrogen and oxygen is shown as,

Moles of water is calculated as:

The theoretical yield of water is calculated as:

Therefore, option D. 160 gm is the theoretical yield of water.
Learn more about theoretical yield here:
brainly.com/question/918691