A sample of sulfur has a mass of 232 grams. How many moles of sulfur are in the sample?

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Moles are a measure of the number of atoms or molecules in a sample. It can be calculated by dividing the mass of the sample by its molecular weight, which is 1/12 times its atomic weight. In this blog post, we will explore how to use molarity and molality to solve problems that involve moles!

What is the number of moles in a sample? To find out, divide the mass by its molecular weight. Since sulfur’s molecular weight is 32 and 232/32=approximately six, there are approximately six molecules or atoms of sulfur that make up this sample.

molecule, cell, biology @ Pixabay

How much energy does it take to heat one mole (unit) of water from 273 K to 373 k using an external source with constant power input? The specific heat capacity for water at 20°C is 0.55 J/(g·K).

Answer: 11.0634 joules per mole

How many Joules would be needed if each molecule had a different amount of kinetic energy? 

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