How many moles are there in 270.4 g sample of NaOH

Homogeneous mixtures

At dinner your brother got mad and threw your burrito at a speed of 4 m/s. It flies for 18 seconds trough the air. How much distance did the burrito cover?

What is the mass of a sample of O2 gas, which has a pressure of 740 mmhg at a temperature of 25 degrees Celsius in a volume of 250 mL

What are some sources of error when testing for gases?

What type of substances make better conductors? A. Substances with greater density. B. Substances with more surface area. C. Substances with less density. D. Substances with less surface area.

What pressure is exerted by 0.750 mol of a gas at 0 °C and a volume of 5 L? 2.1 atm 3.4 atm 4.98 atm 760 atm

8) What is the molarity (M) of an aqueous solution containing 22.5 g of sucrose (C12H22011) in 35.5 mL of solution? A) 3.52 M B) 1.85 x 10-2M C) 0.104 M D) 0.0657 M E) 1.85 M

D5W is a solution used as an intervenous fluid. It is 5.0% by mass solution of the dextrose (C6H12O6) in water. if the density of D5W is 1.029 g/ml. Calculate the molarity of the dextrose in the solution.

In the titration of sodium oxalate with potassium permanganate, pure sodium oxalate (Na2C2O4, MM = 133.9985 g/mol) is used to find an accurate Molarity of a potassium permanganate (KMnO4) solution. If 98.

Who is the first scientist that discovered DNA?