Elements vs. compounds which substance is a compound or an element

Mathematics

1 answer:

zaharov [31]4 years ago

3 0

Answer:

A pure substance that is made up of ONE type of atom is known as an element. So, an element would be any pure substance that is made up of a single type of atom.

A compound is the chemical combination of two or more atoms in a fixed proportion. So, a substance that is made up of two or more atoms that have chemically combined is known as a compound.

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The sum of 42 and twice a number is 164. find the number

Simora [160]

Answer:

Step-by-step explanation:

let the number be x then twice the number is 2x, hence

42 + 2x = 164 ( subtract 42 from both sides of the equation )

2x = 122 ( divide both sides by 2 )

x = 61

Hence the number is 61

6 0

3 years ago