Q2

What is the molarity of a solution that contains

0.500 mole of KNO, dissolved in 0.500-liter of

solution?

(1) 1.00 M

(3) 0.500 M

(2) 2.00 M

(4) 4.00 M

Fe2o3 (molar mass = 159.7 g/mol) reacts with co (molar mass = 28.0 g/mol) according to the equation fe2o3 (s) + 3 co (g) → 3 co2 (g) + 2 fe (s). when 352 g fe2o3 reacts with excess co, how much fe (iron) is produced? 1. 4.41 mol fe 2. 0.907 mol fe 3.

How wouldo I do research on which cup would keep a hot drink warmer

Which of these are lost when the body perspires? ... Oxygen and calcium ... Calcium and sodium ... Sodium and potassium ... Potassium and oxygen

Mountains that begin when molten material reaches Earth's surface through a weak area of crust are fault-blocked mountains.

Based upon the following equation: P4 + 5 O2 - - > 2 P2O5 How many grams of P4 (molar mass 124 g = 1 mole) are necessary to react with 6.8 grams of O2 (molar mass 32 g = 1 mole) ?

Which of the following sets of empirícal formula, molar mass, and molecular formula is correct?

Hexane and hexene are hydrocarbon compounds from different homologous series. the combustion of these two compounds produce different amount of soot. explain the difference based on the percentage of carbon by mass.

Reactants → products Based on the Law of Conservation of Matter, describe the relationship between the mass of the reactants and the mass of the products.

What is the first step in the scientific method? A. form a hypothesis B. illustrate the process C. observe and ask questions D. draw conclusions

Nitrogen oxide racts with bromine to form nitrosyl bromide. A sample of 0.0655 mol NO with 0.0328 mol Br2 gives an equilibrium mixture containing 0.0389 mol NOBr.