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strojnjashka [21]
3 years ago
7

A chemical reaction gives off 2100 kg of heat energy how many calories

Chemistry
1 answer:
dlinn [17]3 years ago
7 0

The chemical reaction that gives off 2100 Kg of heat energy has 501.9126 calories


calculation

convert KJ to  calories

that is

          1 KJ  =  0.239006 calories

        2100KJ= ?  calories

by close multiplication

= (2100 kj  x 0.239006)÷ 1 kj  =501.9126 calories

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Explanation:

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Write the chemical equation for the formation of HI from the single, isolated H and I atoms.
mart [117]

Answer:

H2 + I2 → 2 HI.

Explanation:

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The kinetic molecular theory states that all particles of an ideal gas are
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Explanation:

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2 years ago
An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma) 0.83 N 1.2 N 11 N 30 N
masya89 [10]
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Detailed Solution:
According to Newton's second law:

F = ma --- (A)

Given:
mass = 5kg
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Plug all the value in equation (A)
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4 0
3 years ago
Read 2 more answers
A piece of metal has a volume of 30.0cm3 and a mass of 252g. What is its density? what metal do you think this is?
Alborosie

Answer:

Explanation:

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3 years ago
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