Question

Question 7

How many molecules of water are in 0.042 Lof pure water (ignoring any temperature
effect)?
Express your answerin e-notation using as many decimal places as necessary
Example: 1,000,001 should be expressed as 1.000001e+6
Notes: Avogadro's constant = 6.02214076e+23 mol 1

Answer 1

Step-by-step explanation:

Moles of 0.042 L of Pure water = 0.042 / 22.4

`Moles \: of \: 0.042 L \: of \: Pure \: water \: = 1.87 * {10}^( - 3)`

`Molecules \: in \: 0.042 L \: of \: Pure \: water \: = moles * avogadro \: number`

Molecules in 0.042 L of Pure Water

= 1.126 * 10^21