1) How many moles are there in 4.0 grams of FeF3?

If the stock bottle is labled 15mg/mL and the other dose of 15.0mg, how many milliliters will the nurse draw up in the syringe

2) Consider the reaction H2S + I2 → 2HI + S a) Name the substance oxidized b) Name the substance reduced c) Name the oxidizing agent d) Name the reducing agent

A sample of nitrogen gas occupies 1.55 L at 27.0 degrees celsius and 1.00 atm. What will the volume be at - 100.0 degress celsius and the same pressure?

How many cells are needed to form an organism?

Which pair below describes isotopes of the same element? A) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons B) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons C) an atom with 8 protons and

A gas has a volume of 5.0 L at a pressure of 50 KPa. What happens to the volume when the pressure is increased to 125?

What is the molar mass of Fe2Br3? 1.35 x 10^2 g/mole 3.27 x 10^2 g/mole 3.51 x 10^2 g/mole 8.14 x 10^2 g/mole

A gas with a volume of 5.0 L at a pressure of 215 kPa is allowed to expand to a volume of 14.0 L. What is the pressure in the container if the temperature remains constant?

Sunita carries out an experiment to investigate diffusion. She uses water and a food dye to find out how the volume of water used affects the time the dye takes to spread evenly through the water.

How are coefficients used to balance chemical equations?