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DaniilM [7]
3 years ago
8

Q1. If a piece of ice absorbs 131 J of heat energy, how much was lost by the surroundings?

Chemistry
1 answer:
Rashid [163]3 years ago
4 0

Answer:

53

Explanation:

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How many moles are in 20.50 grams of NH3?
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Sorry, the correct answer is A. 3.4 x 10 - 24

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3 years ago
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A period of the life cycle during which positive nitrogen balance is most likely to occur is:__________
NemiM [27]

The period of the life cycle during which positive nitrogen balance is most likely to occur is childhood.

<h3>What is nitrogen balance?</h3>

The term nitrogen balance refers to the fact that there is a balance between the intake and the loss of nitrogen. The intake of nitrogen occurs when a person takes in food that contain proteins which are a rich source of nitrogen in the body and helps in the process of the build up of the cells in the body.

The period of the life cycle during which positive nitrogen balance is most likely to occur is childhood.

Learn more about nitrogen balance:brainly.com/question/14570903

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4 0
1 year ago
Iron tablets' usually contain iron sulphate (FeSO4).
aniked [119]

Answer:The atomic weight is the lower number on each chemical. Fe has a mass of 56, S a mass of 32 and O a mass of 16. As there are four oxygens present in this compound, you multiply 16 by 4 to get 64. Lastly you add all these separate masses together, which gives a total relative mass of 152.

Explanation:

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4 0
2 years ago
In a calorimeter, the temperature of 100g of water decreased by 10 degrees Celsius when 10g of ice melted. How much heat was abs
Crazy boy [7]
So use equation: ΔH = MCΔT

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ΔT = the temp. change of the reaction

ΔH = 100 x 4.18 x 10 = 4180J or 41.8KJ

so the cube absorbed 4180J of energy 

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6 0
3 years ago
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How do we know stars are element factories?
djverab [1.8K]
In a nutshell, stars are mainly made of hygrogen, element 1.

over time, elements got more dense as they collided and cooled, leading to other gases, metals...

then they explode, which lead to all kinds of further complex elements.

The stuff that makes up the universe a lot of it is from exploding star stuff, and the Earth was built up upon these remains and the atoms that make up organisms even could originally be from stars.

8 0
3 years ago
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