Scientist discover that stars in the universe are mostly composed of which elements?

As a reaction proceeds, one mole of reactant equals: A) three units of a balanced chemical equation B) two units of a balanced chemical equation C) four units of a balanced chemical equation D) one unit of a balanced chemical equation

A gas has a volume of 590ml at a tempature of - 55.0 Celsius. What volume will the gas occupy at 30.0 Celsius? Show your work

Which of the following is true for compounds?

What powers explosions and fire

According to the valence bond theory the triple bond in ethyne consists of

Can y'all give me some examples of physical changes

A nitrogen-containing compound shows no absorption band at ∼3400cm-1 and no absorption bands between ∼1700cm-1 and ∼1600cm-1. what class of compound is it

What is the mass of 35.2 ml of a solution that has a density of 1.12 g/cm (in dimensional analysis)

What is the molecular geometry, or shape, of beryllium chloride (becl2) ?

What is the best category for nf3? 1. amphoteric ion 2. lewis acid 3. salt 4. bronsted-lowry acid 5. arrhenius acid 6. arrhenius base 7. lewis base 8. weak electrolyte?