How is convection related to the rise and fall of wax in lava lamps

what is the density of a substance that has a mass of 2.0 g, and when placed in a graduated cylinder the volume rose from 70 mL to 75 mL

What is the name of this hydrocarbon? 2-butane 2-butene 2-butyne 4-butyne 4-propyne

What best explains how two oxygen atoms, each with six valence electrons, can bond with each other? One atom can lose two electrons so that the other atom can gain them and have eight valence electrons.

What does the sum of oxidation numbers need to equal for a charged compound? The largest oxidation number The smallest oxidation number Zero The charge on the compound

Calculate the number of moles in 0.850 grams of hydrogen atoms

What is the concentration of chloride ion when 16.8ml of a 0.554 M solution of barium chloride is combined with 16.8ml of a 0.593M of aluminum chloride?

A chemist measures the amount of fluorine gas produced during an experiment. she finds that 76.9 g of fluorine gas is produced. calculate the number of moles of fluorine gas produced.

The job of the human heart is to circulate blood through all of the body's arteries, capillaries, and veins. The job of the human lungs is to supply the small amount of blood in them with oxygen.

A 90 lb person is prescribed a drug in the amount of 50mg/kg body per day to be delivered in 2 doses per day. Each tablet contains 250mg of the medicine. How many tabletes should be given per dose?

What is the stable configuration of the nitride ion (N^-3)