Iron has a density of 7.86 g/cm^3. Calculate the volume of a piece of iron having a mass of 3.99 kg.

What is the molarity of a solution made by adding 1.300 g of NaOH to a 250-mL volumetric flask and diluting to the mark?

Through the collection of information and data, we know that all of the following cause negative consequences to the environment except? A. oil spills. B. burning fossil fuels. C. exhaling carbon dioxide. D. contamination of groundwater.

Kinetic energy is the energy of motion. a) True b) False

When a strong wind is blowing from one location to another, the two locations most likely have a difference in Earth science

Compared to the physical and chemical properties of the compound NO2, the compound N2O has A. the same physical properties and the same chemical properties B. different physical properties and different chemical properties C.

A mixture of He He, N 2 N2, and Ar Ar has a pressure of 22.1 22.1 atm at 28.0 28.0 °C. If the partial pressure of He He is 2475 2475 torr and that of Ar Ar is 1049 1049 mm Hg, what is the partial pressure of N 2 N2?

Oceans make the temperaturs of nearby land more extreme ... True or false

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in

14. Two or more substances that are together but do not combine to form a new, pure substance.

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution