100 points bc why not :P Which statement best describes heating by radiation?

Chemistry

1 answer:

patriot [66]3 years ago

7 0

Answer:

Sunlight travels through space without the aid of fluids or solids.

Explanation:

By definition, radiation is transfer of heat without a medium.

All other options are have convection involved in them, not radiation.

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Sugar is easily soluble in water and has a molar mass of 342.30 g/mol. what is the molar concentration of a 252.6 ml aqueous sol

lions [1.4K]

0.811 M is the molar concentration of a 252.6 ml aqueous solution prepared with 70.3 g of sugar.

<h3>Define molarity of a solution.</h3>

Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution.

Given data:

252.6 mL = 0.2526 L

Next, we shall determine the number of moles of the sugar. This can be obtained as follow:

Molar mass of sugar = 342.30 g/mol.

Mass of sugar = 70.3 g

Mole of sugar =?

Mole = $\frac{mass}{molar \;mass}$