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2 years ago

Photosynthesis is the chemical process in which plants and other organisms

Chemistry

1 answer:

-Dominant- [34]2 years ago

7 0

Answer:

sugar and oxygen

Explanation:

sugar (glucose) and oxygen

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Choose all the answers that apply. Which of the following has kinetic energy? rolling ball, moving car, book on a table, spinnin

Virty [35]

Spinning top, moving car, and rolling ball have kinetic energy I believe

5 0

3 years ago

An atom

Natasha2012 [34]

Answer:

Doesnt take up space

Explanation:

Looked it up lol

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3 years ago

Which of the following best explains velocity?

zhannawk [14.2K]

Velocity is explained as the *speed and *direction something might move. Speed means moving and Direction means a certain way (not stationary.)

Hope this helps!

8 0

3 years ago

Whenever energy is ______ from one form to another, some of that energy is lost by being changed into heat.

schepotkina [342]

Whenever energy is converted from one form to another, some of that energy is lost by being changed into heat.

5 0

3 years ago

Calculate the freezing point (in degrees C) of a solution made by dissolving 7.99 g of anthracene{C14H10} in 79 g of benzene. Th

mario62 [17]

<u>Answer:</u> The freezing point of solution is 2.6°C

<u>Explanation:</u>

To calculate the depression in freezing point, we use the equation:

$\Delta T_f=iK_fm$

Or,

$\Delta T_f=i\times K_f\times \frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ in grams}}$

where,

$\Delta T_f$ = $\text{Freezing point of pure solution}-\text{Freezing point of solution}$

Freezing point of pure solution = 5.5°C

i = Vant hoff factor = 1 (For non-electrolytes)

$K_f$ = molal freezing point depression constant = 5.12 K/m = 5.12 °C/m

$m_{solute}$ = Given mass of solute (anthracene) = 7.99 g

$M_{solute}$ = Molar mass of solute (anthracene) = 178.23 g/mol

$W_{solvent}$ = Mass of solvent (benzene) = 79 g

Putting values in above equation, we get:

$5.5-\text{Freezing point of solution}=1\times 5.12^oC/m\times \frac{7.99\times 1000}{178.23g/mol\times 79}\\\\\text{Freezing point of solution}=2.6^oC$

Hence, the freezing point of solution is 2.6°C

8 0

3 years ago