The number of particles in one mole of a substance is:

Avogadro's number

molecular weight

Avogadro's weight

molecular number

Arrange these compounds in order of increasing standard molar entropy at 25°C: C3H8 (g), C2H4 (g), ZnS (s), and H2O (l).

If the volume of a balloon is doubled while the temperature is held constant, what change occurs to the pressure?

When 1.98g of a hydrocarbon is burned in a bomb calorimeter, the temperature increases by 2.06∘C. If the heat capacity of the calorimeter is 69.

Why does a coating of oil slow the oxidation of iron? the oil stops oxygen from reaching the iron, and therefore decreases the concentration of oxygen in the rusting reaction the oil's surface decreases the surface area of the chain, slowing the

What percent of magnesium bromide, MgBr2, is magnesium?

What is the maximum number of covalent bonds an element with atomic number 8 can make with hydrogen?

What are the chemical formulas for ... Heptasulfur Pentoxide: Trisulfur Monochloride: Selenium Hexafluoride: Tetranitrogen Pentasulfide: Carbon Nonachloride: ?

Write an equation for the reaction of hydrogen chloride and sodium sulfide to produce hydrogen sulfide with sodium chloride. 1. Show the formulas of the reactants 2. Show the formulas of the products. 3. Write the balanced equation for this reaction

Martha has a large amount of 1.25 M H2SO4 in her lab. She needs 36 grams of H2SO4 for a chemical reaction she wants to perform. How many liters of solution should she use?

A student makes observations when water is added to a blue solution of copper sulfate. The student makes only 1 observation: the solution changes to a lighter shade of blue. Is this an example of a chemical reaction? Explain your reasoning.