Mole, mass, atoms, molecules, conversions

230 in scientific notation

A. Use the half-life of carbon 14 to find the value or the parameter b, and plot the function. b. If 90 percent of the original carbon 14 remains, estimate how long ago the organism died? c. Suppose our estimate of b is off by - 1 percent.

A 50. g sample of dry iron (II) sulfate has which mass if converted to the pentahydrate?

What type of compound is CH3-O-CH2-CH2-CH3?

A sample of gold (Au) has a mass of 45.65 g. A) Calculate the number of moles of gold (Au) in the sample. Show your work and highlight your final answer. B) Calculate the number of atoms of gold (Au) in the sample. (Use your answer from Part A.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?

Jack wants to know if it takes longer for warm water to freeze into ice cubes than cold water, so he performed the following experiment. Jack placed 50 mL of water in the refrigerator and allowed it to cool to a temperature of 4°C.

How to calculate average concentration

Suppose that you measure a pen to be 10.5 cm long. Convert this to meters.

How are amounts of hydrogen and oxygen gas made from the electrolytic decomposition of water related to the chemical formula of water?