An ionic compound is found to contain 10.9% magnesium, 31.8% chlorine and 57.3% oxygen. What is the empirical formula for this compound?

How did mendeleev orginally organize the element in his periodic table

An increase in the temperature of a liquid causes a (n) ? A - increase in the kinetic energy of particles B - endothermic reaction to occur C - decrease in the velocity of the particles D - exothermic phase change to occur

Choose the answer that takes place when a liquid absorbs heat energy without increasing its temperature. A.) the pressure increases B.) it vaporizes C.) it solidifies D.) the volume decreases

According to the solubility rules, which compound is insoluble in water?

Why is distilled water added to the crucible after igniting the magnesium metal?

Crude oil may contain hundreds of different types of hydrocarbons. Some examples include: Butane (C4H10) Dodecane (C12H26) Octane (C8H18) Benzene (C6H6) Many common fuels, such as gasoline and kerosene, are combinations of these substances or others.

What will happen if the concentration of water inside a cell is higher than the concentration of water outside a cell?

During a lab, you heat 1.04 g of a niso4 hydrate over a bunsen burner. after heating, the final mass of the dehydrated compound is 0.61 g. determine the formula of the hydrate and also give the full name of the hydrate.

Which molecule is a source of energy, a store of energy, and can mix with water?

How many atoms will you find in 2.0 moles of he?