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Inessa05 [86]
2 years ago
13

Using the simulation, how can you show that it takes more energy to convert a liquid to a gas than a solid to a liquid?​

Chemistry
1 answer:
icang [17]2 years ago
3 0

Answer:

The enthalpy of vaporization of a given substance is much greater than its enthalpy of fusion because it takes more energy to completely separate molecules (c

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Compound A is an organic compound which contains Carbon, Hydrogen and Oxygen. When 0.240g of the vapour of A is slowly passed ov
vesna_86 [32]

(a)   In this section, give your answers to three decimal places.

(i)

Calculate the mass of carbon present in 0.352 g of CO

2

.

Use this value to calculate the amount, in moles, of carbon atoms present in 0.240 g

of

A

.

(ii)

Calculate the mass of hydrogen present in 0.144 g of H

2

O.

Use this value to calculate the amount, in moles, of hydrogen atoms present in 0.240 g

of

A

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(iii)

Use your answers to calculate the mass of oxygen present in 0.240 g of

A

Use this value to calculate the amount, in moles, of oxygen atoms present in 0.240 g

of

A


(b)

Use your answers to

(a)

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thank you

hope it helpsss

4 0
4 years ago
A. List 3 signs that a chemical reaction occurred.
ioda
A. gas change, color change, and temperature change.

B. color change; one day you wore a ring that wasn't stainless steel in the shower, so the following morning it was rusted.
6 0
3 years ago
Determine how many grams of N2 are produced from the reaction of 8.37 g of H2O2 and 5.29 g of N2H4.
Dmitriy789 [7]
N₂H₄  +  2H₂O₂    →   N₂  +  4H₂O

mol = mass ÷ molar mass

If mass of hydrazine (N₂H₄)  = 5.29 g 
then mol of hydrazine           = 5.29 g ÷ ((14 ×2) + (1 × 4))
                                              = 0.165 mol

mole ratio of hydrazine to Nitogen is     1   :  1
  ∴ if moles of hydrazine = 0.165 mol
     then moles of nitrogen = 0.165 mol

Mass = mol × molar mass

Since mol of nitrogen (N₂)  = 0.165
then mass of hydrazine      = 0.165 × (14 × 2)
                                           = 4.62 g
5 0
3 years ago
A car travelling at a uniform speed of 100 kmh spends 15minutes moving from point A to point B along its route. the distance bet
gizmo_the_mogwai [7]

Answer:

25002m

Explanation:

V = 100 km/h

Converting to m/s, we have

V = (100 x 1000)/3600 = 27.78m/s

t = 15mins = 15 x 60 = 900secs

Displacement =?

Velocity = Displacement /Time

Displacement = Velocity x time

Displacement = 27.78 x 900

Displacement = 25002m

Since displacement and distance are measured in same unit, the distance between A and B is 25002m

7 0
3 years ago
In explosive combustion the rapid expansion of --------------- causes explosion and the production of ------------------
mote1985 [20]

Answer:

Volume; high temperature and pressure

Explanation:

In an explosive combustion the rapid expansion of the volume causes explosion and the production of high temperature and pressure.

The substance is usually in a confined place and the expansion usually reaches a breaking point in which it is expelled from the space usually accompanied with a loud noise and high amount of temperature and pressure change thereby releasing its gas constituents.

5 0
3 years ago
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