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allochka39001 [22]
3 years ago
7

Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the

melting ice and then use q=mCΔTq=mCΔT to calculate the temperature change of the 312 gg of water.
Chemistry
1 answer:
Anvisha [2.4K]3 years ago
4 0

Answer:

The temperature change is 80°C

Explanation:

Heat absorbed by the melting ice (Q) = mL = 312×336 = 104,832 J

∆T = Q/mC = 104,832/312×4.2 = 80°C

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With what KClO3 reacts with if it is by temperature
2KClO3===》KCl + KClO + O2
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3 years ago
What is the initial temperature (°C) of a system that has the pressure decreased by 10 times while the volume increased by 5 tim
horrorfan [7]

Answer:

27°C or 300K

Explanation

We were told that the pressureof the system decreased by 10 times implies that P2= P1/10

Where P2=final pressure

P1= initial pressure

Wew were also told that the volume of the system increased by 5 times this implies that V2= 5×V1

Where T2= final temperature =-123C= 273+(-123C)=150K

T1= initial temperature

But from gas law

PV=nRT

As n and R are constant

P1V1/T1 = P2V2/T2

T1= P1V1T2/P2V2

T1=2×T2

T1=2×150

T1=300K

=300-273

=27°C

the initial temperature (°C) of a system is 27°C

6 0
3 years ago
Which is an example of a homogeneous mixture?
goldenfox [79]

Answer:

Clean Air  So B

Explanation:

5 0
3 years ago
What is the molality of the solution?
castortr0y [4]

Answer:

6.6023g

Explanation:

To create a 0.247 M solution required weight of barium hydroxide.

0.247 x 171.346 =42.322g per liter

Therefore required mass for 156g of water = 42.322 x 0.156 = 6.6023g

7 0
3 years ago
131.39 g/mol C2HCl3<br> find the molecular formulas
Art [367]

Answer:

Find the mass of 1 mole.

mass of

1

mole of

131.39

g

m

o

l

C

2

H

C

I

⋅

3

=

37.04000067

g

Explanation:

hope it helps make brainlliest ty

5 0
3 years ago
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