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2 years ago

Which statement about the surface of the moon is true?

Chemistry

1 answer:

Anna [14]2 years ago

8 0

Answer:

There is no air, wind, liquid water or life on the moons surface.

Explanation:

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Electrical energy can be transformed into other types of energy. We often experience this transformation of energy in our everyd

harkovskaia [24]

The answer is D. The rice cooker / pot.

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3 years ago

Read 2 more answers

How can you make an item that is made of magnetic material become a permanent magnet instead of a temporary magnet? *.

marta [7]

Answer:

You can heat it and then let it cool it in a very strong magnetic field.

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3 years ago

A balloon under 14.7 atm of pressure at 273K gets left in a car in Florida and the temperature increases to 303K. What is the ne

Firdavs [7]

Answer:

The new pressure in the balloon is 16.3 atm

Explanation:

Gay-Lussac's law establishes the relationship between the temperature and the pressure of a gas when the volume is constant.

This law establishes that pressure and temperature are directly proportional quantities, that is to say that if the temperature increases the pressure increases and if the temperature decreases the pressure decreases.

Mathematically, Gay-Lussac's law states that, when a gas undergoes a constant volume transformation, the quotient of the pressure exerted by the gas temperature remains constant:

$\frac{P}{T}=k$

When you want to study two different states, an initial one and a final one, of a gas, you can use the expression:

$\frac{P1}{T1}=\frac{P2}{T2}$

In this case:

P1= 14.7 atm
T1= 273 K
P2= ?
T2= 303 K

Replacing:

$\frac{14.7 atm}{273 K}=\frac{P2}{303 K}$

Solving:

$P2=303K*\frac{14.7 atm}{273 K}$

P2= 16.3 atm

<u><em>The new pressure in the balloon is 16.3 atm</em></u>

4 0

2 years ago

An acid with a H+ molarity of 1.4x10^-5 M has a pH of?

gregori [183]

Answer:i created brainly follow me and u grt all the answers u need

Explanation:

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3 years ago

You need a 35% alcohol solution. On hand, you have a 280 mL of a 30% alcohol mixture. You also have 75% alcohol mixture. How muc

Marina CMI [18]

Answer:

35 mL

Explanation:

Let the amount of 75% mixture needed be A.

The amount of each solution with their respective concentration to be added together can be expressed as:

0.75A + 0.3(280)...............eqn 1

The addition of the two solution must merge with the expected concentration and this can be expressed as:

0.35(A + 280).............eqn 2

Eqn 1 must be equal to eqn 2, hence:

0.75A + 0.3(280) = 0.35(A + 280)

Solve for A.

0.75A + 84 = 0.35A + 98

0.40A = 14

A = 35

Hence, 35 mL of the 75% mixture will be needed.

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3 years ago