No composto cah2, os atomos de calcio estao sob a forma de ions Cá+2. o átomo de hidrogênio está sobre forma de íons?

If a 1.00 L sample of hydrogen gas has a pressure of 790 torr at a temperature of 1.0 °C, what would be its new volume if the temperature increased to 310 °C and the pressure increased to 5837 torr?

What important process does this equation represent?

The diagram below shows a cell placed in a solution. What will happen to the cell?

What is the terminal speed at which the bar falls? assume the bar remains horizontal and in contact with the rods at all times?

When solid lead (II) sulfide ore burns in oxygen gas, the products are solid lead (II) oxide and sulfur dioxide gas.? A. write the balanced equation B. how many grams of oxygen are required to react with 29.9 grams of lead II sulfide? C.

1. The effect of a catalyst on a chemical reaction is to provide a new reaction pathway that results in a different A) potential energy of the products B) heat of reaction C) potential energy of the reactants D) activation energy

Name three other planets besides Jupiter and Saturn in our system that we know have solid diamonds

When. 455g of anthracene, c14h10, is combusted in a bomb calorimeter that has a water jacket containing 500 g of water, the temperature of the water increases by 8.63 c?

Which of the following would dissolve in water, and why? None of these substances would dissolve in water Candle wax, it is a nonpolar substance Motor oil, its primary IMF is London Dispersion Forces Acetic acid, it ionizes into ions when added to

An atom's central region which is made up of protons and neutrons