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tatyana61 [14]
3 years ago
9

During the water cycle, water is evaporated from the Earth and becomes water vapor. Water vapor then condenses in the air to

Chemistry
1 answer:
Kobotan [32]3 years ago
3 0
No water is lost because matter cannot be created nor destroyed
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How much energy is required to melt 10. 0 g of ice at 0. 0°C, warm it to 100. 0°c and completely vaporize the sample?
natta225 [31]

The 7160 cal energy is required to melt 10. 0 g of ice at 0. 0°C, warm it to 100. 0°C and completely vaporize the sample.

Calculation,

Given data,

Mass of the ice = 10 g

Temperature of ice =  0. 0°C

  • The ice at 0. 0°C is to be converted into water at 0. 0°C

Heat required at this stage = mas of the ice ×latent heat of fusion of ice

Heat required at this stage = 10 g×80 = 800 cal  

  • The temperature of the water is to be increased from 0. 0°C to 100. 0°C

Heat required for this = mass of the ice×rise in temperature×specific heat of water

Heat required for this  = 10 g×100× 1 = 1000 cal

  • This water at  100. 0°C  is to be converted into vapor.

Heat required for this = Mass of water× latent heat

Heat required for this  = 10g ×536 =5360 cal

Total energy or heat required = sum of all heat = 800 +1000+ 5360  = 7160 cal

to learn more about energy

brainly.com/question/7185299

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6 0
1 year ago
The number of moles of hydrogen that are needed to produce .253 moles of water​
Brut [27]

Answer:

454

Explanation:

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8 0
3 years ago
What is the relationship between the release of energy as heat and calories
Olegator [25]

Answer:

Explanation:

Calories is a unit to measure the amount of energy contained in a particular food product. It is regarded as the energy required to raise the temperature of 1g of water by 1°C.

It is important note that calories measures the heat content of food we eat and consume. Therefore, there is a direct relationship between the release of energy as heat and the calories. The more the calories, the more the energy that would be released as heat.

7 0
3 years ago
A large container holds 2 liters of water. 45.0 grams of NaCl is added to the container. What is the molarity of sodium chloride
djverab [1.8K]

Answer:

THE MOLARITY OF SODIUM CHLORIDE IN THE CONTAINER IS 0.3846 M.

Explanation:

Molarity of a solution is the number of moles of solute per dm3  of solution.

Mass concentration = Molar concentration * Molar mass

1. calculate the mass concentration;

Mass conc. = 45 g in 2 L

= 45 g in 2 dm3

In 1 dm3, the mass will be 45 / 2

= 22.5 g/dm3 of NaCl.

2. Calculate the molar mass;

(Na = 23, Cl = 35.5)

Molar mass = ( 23 + 35.5 ) g/mol

Molar mass = 58.5 g/mol

3. calculate the molarity

Molarity = mss concentration / molar mass

Molarity = 22.5 g/dm3 / 58.5 g/mol

Molarity = 0.3846 mol/dm3 of NaCl.

The molarity of sodium chloride in the container is 0.3846 mol/dm3

4 0
2 years ago
Please help me! giving brainliest!!
Dima020 [189]

Answer:

It is a covalent bond because both carbon and oxygen are nonmetals. The formula will be CO² because the electrons between the atoms are being shared equally.

8 0
2 years ago
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