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polet [3.4K]
2 years ago
15

How many moles are there in 7.25 x10+22 particles of magnesium

Chemistry
2 answers:
Akimi4 [234]2 years ago
4 0
What do mean by moles?
expeople1 [14]2 years ago
3 0
94.5 magnesium ummmmmmmmmmmmmmmmmmmmmmmm
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which type of weather technology often carries cameras that can make images of Earth's surface clouds and snow cover?
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Given the formula: what is a chemical name of this compound? propane propanal propanol propanone
katrin [286]
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7 0
3 years ago
Please help asap and thank you
natulia [17]

Answer:

Metamorphic rock

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7 0
3 years ago
Calculate the number of calories needed to increase the temperature of 50.0 g of copper metal from 21.0 degrees C to 75.0 degree
KonstantinChe [14]
<h3>Answer:</h3>

1031.4 Calories.

<h3>Explanation:</h3>

We are given;

Mass of the copper metal = 50.0 g

Initial temperature = 21.0 °C

Final temperature, = 75°C

Change in temperature = 54°C

Specific heat capacity of copper = 0.382 Cal/g°C

We are required to calculate the amount of heat in calories required to raise the temperature of the copper metal;

Quantity of heat is given by the formula,

Q = Mass × specific heat capacity × change in temperature

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   = 1031.4 Calories

Thus, the amount of heat energy required is 1031.4 Calories.

4 0
3 years ago
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