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nevsk [136]
4 years ago
5

The force of gravity always pulls ____

Chemistry
1 answer:
damaskus [11]4 years ago
6 0
Down...
and if you were wondering, the earth pushes back
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Explanation:

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3 years ago
A) Mention any two properties of an ideal fuel. (b) What is meant by calorific value? (c) 2kg of a fuel produces 48,000 KJ of he
Brilliant_brown [7]

Answer and explanation:

A) An ideal fuel must:

- easy to transport and storage.

- have a high calorific value.

B) The <em>calorific value</em> for a fuel is the amount of heat - measured in Joules- which is produced during the complete combustion of the fuel. It is expressed in Joules per Kg of fuel (J/kg).

C) From the data:

mass of fuel = 2 kg

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We calculate the calorific value by dividing the heat produced by the mass of fuel, as follows:

calorific value = heat produced/mass of fuel = (48,000 KJ)/(2 kg)= 24,000 kJ/kg

Since 1 KJ= 1000 J, we can express the calorific value in J/kg as follows:

24,000 kJ/kg x 1000 J/1 kJ = 2.4 x 10⁷ J/kg

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3 years ago
What is the molar mass of PBCO3
gladu [14]
<span>267.21 g/mol

There you go.</span>
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3 years ago
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The lewis dot structure rule states that
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32

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The rate of energy production is referred to as<br><br> Light<br><br><br> Mass<br><br><br> Power
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The rate of energy production is referred to as power

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