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Mice21 [21]
3 years ago
6

The temperature on the moon is (4 points) about the same as the Earth hotter than the Earth most of the time goes from extremely

cold to extremely hot during a lunar day colder than the Earth most of the time
Chemistry
1 answer:
fiasKO [112]3 years ago
6 0
Answer is C.) G<span>oes from extremely cold to extremely hot during a lunar day </span>

The reason is because the temperatures on the moon<span> are very hot in the daytime, about 100 degrees C. At night, the </span>lunar <span>surface gets very cold, as cold as minus 173 degrees C. This wide variation is because Earth's </span>moon has no atmosphere to hold in heat at night or prevent the surface from getting so hot during the day.
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Why do we put salt on the floor in the winter?
ollegr [7]
For it wont freeze and you dont fall.. hoped i help 
8 0
3 years ago
A substance releases 2,192 J of heat, changing its temperature from 50 degrees C to 5 degrees C. The mass of the substance is 73
Gre4nikov [31]

The specific heat capacity of the given substance is -0.66 J/g°C.

<u>Explanation:</u>

The heat absorbed by any substance is the product of its mass, specific heat capacity and change in temperature.

q = m × c × ΔT

m is the mass in grams

q = amount of heat released or absorbed in J

ΔT = change in temperature in °C = 5 -50 = -45°C

c = specific heat capacity in J/g°C

c = $\frac{q}{m \times dT}

Plugin the values, we will get,

c = $\frac{2192 }{73.9 \times-45}

= -0.66 J/g°C

3 0
3 years ago
Enter the correct ground-state (or lowest energy) configuration based on the number of electrons: 1s^2 2p^6 3s^2.
elena-14-01-66 [18.8K]

Answer:

The ground state represents the lowest-energy state of the atom.

Explanation:

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4 0
2 years ago
Read 2 more answers
A substance that's attracted to water molecules is called
DedPeter [7]
Hydrophilic molecules
7 0
3 years ago
Im hvaing a hard time getting the right answer
Tanya [424]

Answer:

V=23.9mL

Explanation:

Hello!

In this case for the solution you are given, we first use the mass to compute the moles of CuNO3:

n=2.49g*\frac{1mol}{125.55 g}=0.0198mol

Next, knowing that the molarity has units of moles over liters, we can solve for volume as follows:

M=\frac{n}{V}\\\\V=\frac{n}{M}

By plugging in the moles and molarity, we obtain:

V=\frac{0.0198mol}{0.830mol/L}=0.0239L

Which in mL is:

V=0.0239L*\frac{1000mL}{1L}\\\\V=23.9mL

Best regards!

6 0
3 years ago
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