The atomic number of boron is 5. what is the mass number of a boron atom with 4 neutrons?

A football field is 120 yards by 53.333 yards. What is the area of the football field in acres if 1 acre=43560 ft? Use correct significant figures when answering this question.

What is the formula for potassium fluoride?

The charge that stays on an object is called

How many grams of fluorine are contained in 8 molecules of boron trifluoride?

A flask that has a mass of 345.8 g is filled with 225 mL of carbon tetrachloride. The mass of the flask and the carbon tetrachloride is found to be 703.55 g. Calculate the density in g/mL and kg/L.

A container has a volume of 200 L at 0.94 atm and 25 C. The pressure changes to 1.00 atm and the temperature changes to 0 C. What is the new volume of the container

f litmus paper is dipped in an acidic solution and then in a basic one, what will happen? The paper will turn from blue to red. The paper will turn from red to clear. The paper will turn from blue to clear. The solution will turn from red to blue.

You need to make an aqueous solution of 0.125 M barium chloride for an experiment in lab, using a 250 mL volumetric flask. How much solid barium chloride should you add?

Relative to the sum of the masses of its constituent nucleons, the mass of a nucleus is: greater the same smaller sometimes greater and sometimes smaller

Smallpox epidemic among Native Americans?