Calculate the volume of a 1.25 M solution of HCN made from 31 grams of HCN

A geologist discovers a fault in a massive rock while out in the field. He notices that the fault occurs at an angle and that the hanging wall has moved downward from the footwall.

If you forget to dry off a bread knife and when you washed it and reddish brown spots appeared on it would that be physical or chemical change

The density of aluminum is 2.70g/mL. What is the volume in mL of 74.5 grams of aluminum?

4. The mass of a single proton is approximately 1.67 x 10-27 kg. The mass of an electron is approximately 9.11 x 104 kg. How many times bigger is a proton than an electron?

For practice, the molecular formula for ascorbic acid is C6H8O6, and you used 6 g in this experiment, calculate the molarity of the ascorbic acid. Now calculate the concentration in moles per drop (assume 1 mL = 20 drops)

a substance that undergoes a physical change like melting is still the same substance is it true or false

What is a polar molecule

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