A chemist heats a sample of hydrated lithium nitrate which weighs 170 grams and finds, after heating that it weighs 95.3 grams. What is the percent of water in the hydrate?

For lunch, a patient consumed 3 oz of skinless chicken, 3 oz of broccoli, 1 medium apple, and 1 cup of nonfat milk (see Table 3.9). How many kilocalories did the patient obtain from the lunch?

If a rock sample has a mass of 2.7g and a volume of 1.1cm^3 what type of rock is it

How many moles are in 25 grams of C7H6NO2I

a 2.0 L sample of gas at 640 mmhg is allowed to expand into a 8.0l container at a constant temperature what is the new pressure

Which one of the following is a weak acid? (a) H2SO4 (b) HF (c) HCl (d) HBr (e) HI

How many mono-; di -; and trichloro derivatives are possible for cyclopentane?

A gas occupies 3.60 L when the temperature is 45.0oC and at 1.02 atm of pressure. What temperature change (in K) will be needed to change the volume to 6.25 L at constant pressure?

When did Pangaea begin to break apart? a. 20 million years ago c. 250 million years ago b. 100 million years ago d. 2 billion years ago.

When an object is thrown, the thrower pushes the object. This causes the object to move in a motion.

Distinguish between accuracy and precision in measurements