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3 years ago

Some light energy can be seen and some cannot be seen with the unaided eye.

Chemistry

2 answers:

Talja [164]3 years ago

8 0

The answer to this question would be- A.radio

m_a_m_a [10]3 years ago

3 0

The correct answer should be A. Radio.

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if the percent by volume is 2% and the volume of solution is 250 mL what is the volume of solute and solution

Liula [17]

Answer:

Solute = 5 mL; solution = 250 mL

Explanation:

The formula for percent by volume is

$\text{Percent by volume} = \dfrac{\text{Volume of solute}}{\text{Volume of solution}}\times 100 \, \%$

If you have 250 mL of a solution that is 2 % v/v,

$\begin{array}{rcl}2 \, \% & = & \dfrac{\text{Volume of solute}}{\text{250 mL}}\times 100 \, \%\\\\2 \times \text{ 250 mL} & = & \text{Volume of solute} \times 100\\\text{Volume of solute} & = & \dfrac{2 \times 250\text{ mL}}{100}\\\\ & = & \textbf{5 mL}\\\end{array}$

If there is no change of volume on mixing,

Volume of solution = 250 mL

-Volume of solute = 5

Volume of solvent = 245 mL

5 0

3 years ago

Is a Animal and Plant cell living

Mila [183]

Yes Animal and plant are cell living

7 0

3 years ago

Options:

Inessa [10]

Answer:

saturated fats

Explanation:

bcoz it is solid at room temperature and does not have double bonds between carbons

8 0

2 years ago

Name at least four other gases in the atmosphere besides oxygen and nitrogen

nikitadnepr [17]

Carbon dioxide (CO2)
Argon (Ar)
Hydrogen (H)
Helium (He)

8 0

3 years ago

Need help ASAP! Describes volume?

frutty [35]

Answer:

a definite to indefinite

Explanation:

because if it is in liquid the volume is trusted,but if it is in gas the volume would have multiplied

i think u can pit it well

8 0

2 years ago