Can unit rate represent how much for one unit

2 answers:

7 0

Answer:A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity. Some common unit rates are miles (or kilometers) per hour, cost per item, earnings per week, etc.

Explanation: hope this helps mark as brainiest

Ymorist [56]3 years ago

6 0

Thank for you thank you please thank you sir I will have it for tomorrow morning and I have no problem getting you
Ok please thank goodness I don’t

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If copper carbonate system is heated for too short a time, what will you notice for mass percent of copper be too large or too s

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Answer:

The mass percent of copper as element is the same.

Explanation:

First of all we need the reaction that is presented below:

$CuCO_{3 (s)} +Heat$ → $CuO_{(s)} + CO_{2 (g)}$

The mass percent of copper (Cu) as element is the same because of during the reaction the element only transform its nature from copper carbonate ( $CuCO_{3 (s)}$ ) to copper oxide ( $CuO_{(s)}$ ), the latter is a solid and will remain in the system.

On the other hand, you will note that the global percentage mass will be small because of the reaction produce ( $CO_{2 (g)}$ ) that is a gas and this one will escape for the system.

Have a great day!

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