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Katarina [22]
3 years ago
13

PLS I M IN HURRY.

Chemistry
2 answers:
ludmilkaskok [199]3 years ago
7 0

What is your question?

morpeh [17]3 years ago
6 0

Answer:

Use p1=560mmHg, v1=50cc

p2=760mmHg, then v2=p1v1/p2=36.84cc

Hope it helps

Explanation:

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3 years ago
How much energy is required to heat 2kg of ice from -5°c to 0°c
balu736 [363]

Explanation:

total heat = Heat required to convert 2 kg of ice to 2 kg of water at 0 °C + Heat required to convert 2 kg of water at 0 °C to 2 kg of water at 20 °C.

Heat=mhfg+mCpΔT

Here, m ( mass of ice) = 2 kg

hfg (latent heat of fusion of ice) = 334 KJ

Cp of water (specific heat) = 4.187 KJ/Kg-K

ΔT(Temperature difference) = 20 °C

Therefore, Heat required = 2 x 334 + 2 x 4.187 x (20 - 0 )

Heat reqd= 835.48 KJ

Therefore, to melt 2 kg of ice 835.48 KJ of heat is required.

4 0
2 years ago
The volume of 0.6305 kg of a liquid is 0.430 L. What is its density in g/mL
motikmotik

Answer: 1.466 g/mL

Explanation:

\frac{0.6305 \text{kg}}{0.430 \text{L}} \cdot \frac{1000 \text{g}}{1 \text{kg}} \cdot  \frac{1 \text{L}}{1000 \text{mL}} = 1.466 \,\frac{\text{g}}{\text{mL}}

6 0
2 years ago
the white powder is added to the clear liquid. what event is occurring and is it a physical or chemical change?
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I would say chemical but I’m not 100% sure might wanna get a second opinion
7 0
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There is nothing that you can do to conserve energy. True or False
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I am going to say it is false.
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