Question

Convert 3.00 * 10 ^ 26 molecules of carbon dioxide gas at STP to L.

1.What is the coefficient of the scientific notation answer? 2.What is the exponent of the scientific notation answer? 3.How many significant figures are there in the answer ?
4.What is the right most significant figure in the answer?

Answer 1

Answer: 1. The coefficient is 1.12

2. The exponent is 4

3. There are 3 significant digits

4. The rightmost significant figure is 2.

Step-by-step explanation:

Scientific notation is defined as the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example : 5000 is written as
`5.0* 10^3`

According to avogadro's law, 1 mole of every gas contains avogadro's number
`6.023* 10^(23)` of particles and occupy 22.4 L at STP.

`6.023* 10^(23)` molecules of
`CO_2` occupy = 22.4 L at STP.

Thus
`3.00* 10^(26)` molecules of
`CO_2` occupy =
`(22.4)/(6.023* 10^(23))* 3.00* 10^(26)=11.2* 10^3 L` at STP.

Scientific notation =
`1.12* 10^4L`

The coefficient is 1.12

The exponent is 4

There are 3 significant digits

The rightmost significant figure is 2.