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Ksju [112]
3 years ago
5

Compare the amount of heat required to vaporize a 200.-gram sample of H2O(ℓ) at its boiling point to the amount of heat required

to melt a 200.-gram sample of H2O(s) at its melting point.
Chemistry
1 answer:
stira [4]3 years ago
6 0
The enthalpy of vaporization of H2O is higher than the enthalpy of fusion of H2O, therefore vaporizing the same mass of H2O would require more heat/energy than melting the same mass of H2O.
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How many atoms are in 2.5 mole of F
mel-nik [20]

Answer: 1.5 x 10^24

Explanation: Just multiply 2.5 by avagadro's number 6.2 x 10^23 to get the answer.

4 0
3 years ago
Which is the next logical step in balancing the given equation? CS2(1)+Cl2(g) CCl4(1) S2Cl2(1)
Mandarinka [93]
Reaction of current interest is: 

<span>CS2(l)       +          Cl2(g)          </span>→       <span>CCl4(l)     +     S2Cl2(l)

While balancing the chemical reaction, care must be taken that number of atoms of reactant side is equal to number of reactant on product side. 

In present case, There is 1 'C' atom of both reactant and product side
There are 2 'S' atoms on both reactant and product side.
However, there are 2 Cl atoms of reactant side, but 6 Cl atoms on product side.
Hence multiplying Cl2 by 3, would equal the number of Cl atoms on both the sides.

Thus, the balanced reaction is
</span>CS2(l)       +         3 Cl2(g)          →       CCl4(l)     +     S2Cl2(l)
7 0
3 years ago
1 reason to be grateful about school food
guajiro [1.7K]

Answer:

to give something to that kid to eat

Explanation:

3 0
3 years ago
Read 2 more answers
Is 2h2 + o2 2h2o a balanced chemical equation?is it obeying the law of conservation of matter
kirza4 [7]

Yes, this is a balanced chemical equation, and it obeys the Law of Conservation of Mass.

A balanced chemical equation obeys the Law of Conservation of Mass if there are the <em>same numbers of each type of atom on each side of the reaction arro</em>w.

2H₂ + O₂ ⟶ 2H₂O

Let’s check the numbers.

<u>Atom</u> <u>On the left</u> <u>On the right</u><u> </u>

  H             4                 4

  O             2                 2

We have the same numbers of H and O atoms on each side of the reaction arrow.

The equation is<em> </em>balanced and it obeys the Law of Conservation of Mass.

5 0
3 years ago
What’s the total mass of the rock sample
mamaluj [8]

Answer:

545.2

Explanation:

To read a beam balance, you need to add together the numbers that each balance reads.

The first beam reads 500.

The second beam reads 40.

The third beam reads 5.2.

500 + 40 + 5.2 = 545.2

The total mass of the rock sample is 545.2.

4 0
3 years ago
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