3)

Atoms of which two elements have a combined total of 23 protons?

A) Sodium, Na, and magnesium, Mg

B) Boron, B, and carbon, C

C) Copper, Cu, and zinc, Zn

D) None of these

What is the mass of 0.8 moles of Iron? A) 12.1 grams B) 25.2 grams C) 44.7 grams D) 100.8 grams

A 3.0 L container holds a sample of hydrogen gas at 300k. If the temperature decreases to 200k and the pressure remains constant what will the volume be

Which compound is insoluble in water

White blood cells are brought into the infected area using the

Why is a cork able to float on water? A. small in size B. a solid C. less dense than water D. equal in density to water

What is the theoretical yield of silver chloride?

Calculate the cell potential for the galvanic cell in which the reaction Fe (s) + Au 3 + (aq) - ⇀ ↽ - Fe 3 + (aq) + Au (s) occurs at 25 ∘ C, given that [ Fe 3 + ] = 0.00150 M and [ Au 3 + ] = 0.797 M.

Magnesium is lighter than other structural metals, so it is increasingly important in the design of more efficient vehicles.

The relationship between number of particles and pressure is As number of particles increases, pressure increases As number of particles increases, pressure decreases The two are not related

Consider the reaction: Al2S3 + 6 HCl → 2 AlCl3 + 3 H2S The reaction has a 29.1% yield. How many grams of Al2S3 are needed to react with 30.0 moles of HCl? a) The molar mass of Al2S3 is 150.16 grams/mole. b) The molar mass of HCl is 36.46 grams/mole.