Question # 9 Multiple Choice
The heart is made mostly of:

nervous tissue
nervous tissue

connective tissue
connective tissue

vascular tissue
vascular tissue

muscular tissue

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397