<span>Haemoglobin is a pure substance because it contains only one type of atom. </span>
The distance light travels in 1 second - <span>186,282 miles
Therefore distance it takes to travel within 182 seconds - </span><span>186,282 miles/second x 182 seconds
Therefore to find the answer we need to </span>multiply the distance it travels within a second with the amount of seconds it takes
correct answer is A) <span>186,282 ⋅ 182</span>
