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kari74 [83]
3 years ago
6

Boiling Point temperatures are dependent

Chemistry
1 answer:
marusya05 [52]3 years ago
4 0
4. Intermolecular force strength
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How does thermal energy flow?
mart [117]
My answer is....A

sorry if im wrong
6 0
3 years ago
A 7.2 L balloon at 2 atm of pressure has its pressure reduced to 0.5 atm. What is the new size of the balloon, in liters?
alexgriva [62]

Explanation:

using Boyles law: which shows the relationship between pressure and volume, when temperature Is kept constant

P1V1 = P2V2

2 x 7.2 = 0.5 x V2

14.4 = 0.5 x V2

V2 = 14.4/0.5 = 28.8 L

Hence the new size of the balloon in litres is 28.8

8 0
2 years ago
Round to 3 significant figures 78.6500
cupoosta [38]

Answer:

78.7

Explanation:

The number has 4 significant figures: 7,8 6 and 5.

To round off to 3 significant figures, the target digit is the third significant figure in the number.The determining digit is the fourth significant figure in the number; it is 5 hence the target digit will go up by 1 and any digits to the right of it will be rounded down to 0.

7 0
10 months ago
what would be the effect on the melting point of a sample if it were not dried completely after filtering the recrystallized sam
jok3333 [9.3K]

The melting point of the sample if it is not dried completely after filtering the recrystallized product will have a broad range and will occur at lower range than the actual value.

What is melting point?

Melting point is the temperature at which the solid form of a given substance changes to the liquid form at atmospheric pressure. It is important because, by using the physical property of a substance the substance can be identified.

The sharp range melting point of the substance indicates the purity of the substance. If the sample is not dried completely after recrystallisation, the melting point will have a broad range.

Therefore, if the sample given is not dried completely, it will be impure and the decreases the melting point of the substance. So the actual melting point of the substance cannot be determined.

To learn more about the melting point click on the given link brainly.com/question/40140

#SPJ4

7 0
1 year ago
When 0.7521 g of benzoic acid was burned in a calorimeter, a temperature rise of 3.60°C was observed. What is the heat capacity
Annette [7]
Answer : S=1.34 KJ

The complete question is -

<span>When 0.7521 g of benzoic was burned in a calorimeter containing 1000 g of water, a temperature rise of 3.60C was observed. What is the heat capacity of the bomb calorimeter, excluding water? The specific heat of water is 4.184 J/g-C and the heat of combustion of benzoic acid is 26.42 kJ/g. 
</span>
On using the formula of Q_{rxn} = mSt, where m is mass of benzoic acid and S is specific heat and t is temperature, we ignore S at this stage.

on solving we get,  Q_{rxn} = 0.7521 X 26.42 = 19.870 KJ

We know, Q_{rxn} =Q_{calorimeter} + Q_{water}

Sp. heat of water is 4.184 J,

Here Q_{water} = 1000 X 4.184 X 3.6 = 15062.4 J

on multiplying Q_{rxn} X 1000 to convert into J = <span>19870.42 J

on substituting the values we get, </span>19870.482 = 15062.4 + Q_{calorimeter}, 
hence, Q_{calorimeter}= <span>4808.082,

</span>Substituting in  Q_{rxn} , we get, 4808.082=St ...(ignoring mass as we changed it to J)

t = 3.6, hence we get, S=1335 J/C on dividing by 1000 we get, S=1.34 KJ

7 0
2 years ago
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