Which of the following elements has the lowest electronegativity?

a. lithium b. Carbon C. bromine d. fluorine

What is the oxidation number for S in the compound S03? (Recall that O has an oxidation number of - 2.) A. 0 B. + 2 C. + 4 D. + 6

If the mass of 1 mole of chlorine atoms is 35.5g, calculate the mass of 6.0 moles of chlorine atoms.

Which of the following chemicals can damage the central nervous system, cardiovascular system, reproductive system, hematological system, and kidneys with overexposure? A. Asbestos B. Lead C. Silica D. Welding fumes

Hemoglobin is the protein that transports oxygen in mammals. Different species of mammals have slightly different forms of hemoglobin. One form of hemoglobin is 0.346% fe by mass, and each hemoglobin molecule contains four iron atoms.

State the rules governing the number of significant figures that result from each of the following operations addition and subtraction; mutiplication and divison

A rectangular block of lead (Pb) measures 20.0 mm X 30.0 mm X 45.0 mm. If the density of Pb is 11.34 g/cm3, calculate the mass of the block

1. What is the name of TiSe

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.