Use the ceiling and floor function to determine the following values:a) There are y passengers waiting to board a shuttle. The shuttle can hold up to 35 passengers per trip. How many trips are required to transport all the passengers? b) A professor has x pens and wants to give 3 pens to each colleague. How many colleagues will receive the full number of pens?

The answer to the calculation below with the correct number of significant figures is: (Just put the number and no units.)  

Which of the following quantities is equivalent to 594 mg? 

Which particle(s) may be found in the nucleus of an atom?

A chip of ice has a mass of 550.5 mg. What is the mass of this ice in grams? (Just put the number and no units.)

How many chlorine atoms are in 29 molecules of chloroform, CHCl₃?

Which of the following is a pure substance that cannot be broken down into simpler substances by chemical means?

The number 8.07 × 10⁻³ has ___ significant figures. 

A chemist has a block of copper metal (density is 8.96 g/mL). The block weighs 2.30 g. What is the volume of the copper block in mL?  (Just put the number and no units.)

“Laughing gas” (dinitrogen monoxide, also called nitrous oxide) is an example of a(n)