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3 years ago

Which method of moving materials in and out of a cell requires energy?

Chemistry

2 answers:

Galina-37 [17]3 years ago

6 0

Answer:

Active Transport

Explanation:

As the name suggests, in active transport you need energy to move materials in and out. Similar to how if you want to be active you need energy, same goes with movements in our cells as well.

dedylja [7]3 years ago

6 0

The answer:
Active Transport

Explanation:
Passive Transport DOES NOT require energy from the cell. And transports like diffusion, facilitated diffusion and osmosis DO NOT require energy. ACTIVE TRANSPORT REQUIRES ENERGY

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Which best describes thermal energy?

Sav [38]

Answer:

It is the sum of internal energies of two or more substances

Explanation:

5 0

3 years ago

Find the volume of a gas at STP, if its volume is 80.0 mL at 109 kPa and -12.5°C.

exis [7]

Answer:

= 913.84 mL

Explanation:

Using the combined gas laws

P1V1/T1 = P2V2/T2

At standard temperature and pressure. the pressure is 10 kPa, while the temperature is 273 K.

V1 = 80.0 mL

P1 = 109 kPa

T1 = -12.5 + 273 = 260.5 K

P2 = 10 kPa

V2 = ?

T2 = 273 K

Therefore;

V2 = P1V1T2/P2T1

= (109 kPa × 80 mL × 273 K)/(10 kPa× 260.5 K)

<u>= 913.84 mL</u>

5 0

3 years ago

Read 2 more answers

Which of the following statements is not correct?

Lilit [14]

Answer:

It's 4.1 moles Li2O = 94 g on Odyssey ware

8 0

2 years ago

Read 2 more answers

An atom has a negative charge. Which of the following must have occurred?

galina1969 [7]

It should be A)It lost a neutron.

5 0

2 years ago

Three blocks of metal at the same temperature are placed on a hot stove. Their specific heat capacities are listed below.Rank th

JulijaS [17]

Answer:

Copper>Steel>Aluminium

Explanation:

Hello,

Since the heat capacity accounts for the required heat to increase by 1°C, 1 kg of the metal, copper is the one that has the lower heat capacity, it means that it requires the least amount of energy to warm up (increase its temperature), this could be substantiated via the mathematical definition of heat capacity:

$H=mC(T_2-T_1)$

Solving for $T_2$ :

$T_2=T_1+\frac{H}{mC}$

It means that the lower the heat capacity, the higher the final temperature.

Best regards.

7 0

3 years ago