Based on atomic number, in which group on the periodic table would element 118 be placed?

When nitrogen and tin (sn4+) form an ionic compound, what is the formula? n3sn4 sn4n3 sn3n4 n4sn3?

Which of the following changes can be reversed by changing the temperature: (a) dew condensing on a leaf; (b) an egg turning hard when it is boiled; (c) ice cream melting; (d) a spoonful of batter cooking on a hot griddle?

Which statement correctly relates two substances in this chemical equation? NH3 + H2O ⇌ OH - + NH4 + A. H2O is the conjugate base of OH-. B. H2O is the conjugate acid of NH3. C. NH4 + is the conjugate acid of NH3. D.

What is the molecular formula of a compound if its empirical formula is NO2 and its molar mass is 138.02 g/mole?

A single reaction where oxidation and reduction take place is called

A penny has a mass of 2.50g and the moon has a mass of 7.35 X 10^22 Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.

If a car tire has a diameter of 3232 inches, what is the approximate circumference of the tire?

9) Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak.

Explain what happens to the average kinetic energy thermal energy and temperature of a substance when the particles in the substance slows down

Which of the following could be used to describe the rate of a reaction? change in time/change in concentration change in mass/change in concentration change in concentration/change in time change in concentration/change in mass