Which of the following is a pure substance? choose all that apply.

a. fruit cake
b. nickel
c. saltwater
d. rust

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

The density of benzene at 15 °c is 0.8787 g/ml. calculate the mass of 0.1500 l of benzene at this temperature. enter your answer in terms of grams

How can the number of core electrons be determined from the periodic table