Convert 72g of O2 to moles

1. An electric iron has a power rating of 750W a. How many joules of electric energy does it change into heat energy every second? b. How many joules of work can it do in 3 seconds c. How long does it take the iron to do 1500J of work? 2.

How many calories are required to raise the temperature of 50.0 grams of water to 75.0 °C

A solution with a ph of 3 is how much more acidic than a solution with a ph of 6

A 1.0-L buffer solution is 0.10 M in HF and 0.050 M in NaF. Which action destroys the buffer? (a) adding 0.050 mol of HCl (b) adding 0.050 mol of NaOH (c) adding 0.050 mol of NaF (d) none of the above

Why does Australia get more UV light than the other parts of the world? Write your idea in complete sentences.

Describe and give an example of parasitism.

Why is a dilute solution of oleic acid used instead of pure oleic acid?

The vapor pressure of benzene (C6H6) is 73.0 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 179 g of benzene and 0.217 mol of a nonvolatile nonelectrolyte?

Aldo drove 420 miles using 18 gallons of gas. at this rate, how many gallons of gas would he need to drive 357 miles

How many grams of As2S3 are in 3.25 moles?