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eimsori [14]
2 years ago
6

When the Earth was formed which planets was its atmosphere similar to?

Chemistry
1 answer:
steposvetlana [31]2 years ago
8 0

it's venus..because its atmosphere are the most similar with the earth

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Determine which equations you would use to solve the following problem: Calculate the amount of heat needed to change 20.0 g of
Inessa [10]

Answer:

Q = 4019.4 J

Explanation:

Given data:

Mass of ice = 20.0 g

Initial temperature = -10°C

Final temperature = 89.0°C

Amount of heat required = ?

Solution:

specific heat capacity of ice is 2.03 J/g.°C

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = T2 - T1

ΔT =  89.0°C - (-10°C)

ΔT = 99°C

Q = 20.0 g ×2.03 J/g.°C × 99°C

Q = 4019.4 J

3 0
3 years ago
How much sucrose can dissolve in 200g of water at 70 °C?​
valentinak56 [21]
Is 320 g per 100 g of water.
6 0
2 years ago
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What are the chemical symbols for the two elements found in iron oxide
Gnom [1K]
For Iron: Fe

For Oxygen: O

These are the two chemical symbols for the two elements found in Iron Oxide.
7 0
3 years ago
Read 2 more answers
Crystals of a chemical in a lab slowly disappear from their container they do not become liquid. What change of state is this an
Olenka [21]
The change of state that has been given in the question is called sublimation. It is actually the process in which a solid gets directly converted to gas without changing into liquid. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.
8 0
3 years ago
What is the ph of the benzoic acid solution prior to adding sodium benzoate?
Reika [66]
The acid dissociation constant of benzoic acid is 6.5 x 10^-5. Therefore, the pH of the benzoic acid solution prior to adding sodium benzoate is:

pH = -log[Ka]
pH = -log (6.5 x 10^-5)
pH = 4.19

The pH of the benzoic acid solution is 4.19 which is acidic, but a weak acid. 

7 0
3 years ago
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