If an atom has 28 protons and 29 neutrons, what is the mass?

Describe each of the following as a physical or chemical property. 1. Apple slices turn brown when exposed to air. 2. At room temperature, mercury is a liquid. 3. Phosphorus will ignite when exposed to air. 4.

Based on the kinetic molecular theory, which of the following statements is correct about a sample of gas at a constant temperature and volume? The net kinetic energy of its particles decreases due to collisions.

Why do elements in the same family generally have a similar properties?

What energy is required to start a reaction

You can use mole ratios and molar mass to determine the masses of substances involved in a chemical reaction. Using the periodic table, calculate the molar masses of iron oxide (Fe2O3) and aluminum oxide (Al2O3).

Several properties of the element magnesium are shown. Which one is a chemical property?

How does the quantity of atp produced as a result of activity by the electron transport chain compare to the quantity produced as a result of glycolysis?

Molybdenum has a molar mass of 95.94g/mol. How many molecules of molybdenum are in 150.0 g of molybdenum

Describe a way that people might be able to solve each envioronmental problem listed below. coal mining can harm habitats and cause pollution.

A sample of methane gas occupies 4.50 gallons at a temperature of 80.0 F. If the pressure is held constant, what will be the volume of the gas at 100. degrees C?