What percent of the first 36 elements on the periodic table are solids at room temperature?

Compare and contrast physical and chemical changes. Give an example of both a physical and chemical change.

Milk is a heterogeneous mixture that contains different types of particles in different phases. Due to the sizes of the particles in milk and the way they are dispersed, the particles do not easily settle out. They also cannot easily be filtered out.

2 H2 (g) - > 2 H2O (g) Calculate the mass of oxygen gas, O2, required to produce 12.90 moles of water, H20 Molar mass H2 = 2.016 g/mol Molar mass O2 = 32.00 g/mol Molar mass = 18.02 g/mol

What atom has 24 neutrons, and 45 mass

Which statement descibes the type of change and the chemical properties of the product and reactants

1. What is the name of TiSe

Which of the following is a cost of recreational activities? A. Exercise B. Economic growth C. Noise D. Social interaction

There are three ways that heat can move from one place to another. Use examples pertaining to how heat is transferred from the sun to Earth and in the land, ocean, and atmosphere to explain all three.

What is temperature? A measure of the kinetic energy of a system. Energy of a system. How hot something is. A measure of density.

How many molecules of sodium nitrate are produced when 17 g of sodium azide, NaN3, react according to the following equation: NaN3 (aq) + AgNO3 (aq) - --> AgN3 (s) + NaNO3 (aq) Question options: 3.7x1023 1.6 x 1023 1.85x1023 6.02x1023