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4 years ago

Can y’all help me please

Chemistry

2 answers:

Katyanochek1 [597]4 years ago

8 0

Answer:

That should be A, conduction

enot [183]4 years ago

5 0

Answer:

Explanation:

Conduction is when there is a transfer of heat through matter by way of kinetic energy.

Basically, it's when something is touching something else. In this case, the spoon was physically touching the ice cream, so it's conduction, not convection.

Convection is related to air currents. When hotter, and therefore, less dense material rises and colder, denser material sinks, both due to gravity, this will result in the transfer of heat energy. It's how the ocean has currents, and is the reason that convection ovens don't need to preheat when cooking food.

But it's not the spoon thing.

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<u>Answer: </u>The molecular weight of the dibasic acid is 89.6 g/mol

<u>Explanation:</u>

Normality is defined as the amount of solute expressed in the number of gram equivalents present per liter of solution. The units of normality are eq/L. The formula used to calculate normality:

$\text{Normality}=\frac{\text{Given mass of solute}\times 1000}{\text{Equivalent mass of solute}\times \text{Volume of solution (mL)}}$ ....(1)

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$0.05=\frac{0.56\times 1000}{\text{Equivalent mass of solute}\times 250}\\\\\text{Equivalent mass of solute}=\frac{0.56\times 1000}{0.05\times 250}=44.8g/eq$

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$\text{Equivalent weight}=\frac{\text{Molar mass}}{\text{Basicity}}$ .....(2)

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Putting values in equation 2, we get:

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Hence, the molecular weight of the dibasic acid is 89.6 g/mol

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