Calculate the mass of a 0.255-ml sample of a liquid with density 0.660 g/ml.

Is h2o a compound or element

2. Where do traits come from? 3. There are sections of DNA called genes. What do genes do?

What is the colour of FeSo4, 7 H2O crystal how does the colour change upon heating? Give balance equation for the change

Why is iron sulfide used in industry?

Calculate the change in entropy if Br2 (l) is converted into gaseous Br atoms. S° for Br2 (l) = 152.2 J / (mol•K) S° for Br2 (g) = 245.5 J / (mol•K) S° for Br (g) = 175.0 J / (mol•K)

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?

How does a solid turn into a liquid

What does the Ka represent in the equation and why is it important?