The Nucleus of one boron atom has 5 protons and 4 neutrons. what is the total charge of the boron?.

Ammonia is produced synthetically by the reaction: 2Fe+3Cl2 - - - 2FeCl3 - Is this an exothermic or endothermic process? - How many moles of NH3 are formed when 1 mol of N2 reacts with hydrogen?

How is the rate of appearance of h2o related to the rate of disappearance of o2?

Which is the correct rate law for the overall reaction

You just used the last of your breakfast cereal to make yourself a fresh bowl. after eating a couple of spoonfuls, you notice that the printing on the box claims that your cereal has the most metallic iron of any breakfast cereal on the planet.

The Dalton model of the atom predicted which of the following? A. Electrons are embedded in a sphere. B. Atoms can be broken down into smaller components. C. Atoms have a nucleus. D. All matter is made of atoms.

What element has 8 valence electrons

Which of the following best describes a metal? Brittle, shiny, and solid Brittle, dull, and low density Malleable, shiny, and able to conduct heat or electricity Malleable, dull, and solid, liquid, or gas at room temperature?

Which of the following errors could cause your percent yield to be falsely high, or even over 100%? Select ALL that apply. A.) Heating the sample too vigorously. B.) Handling the crucible directly with your hands. C.

If 56.8 ml of bacl2 solution is needed to precipitate all the sulfate ion in a 554 mg sample of na2so4 (forming baso4), what is the molarity of the solution?

is the number of total atoms on the left side of a balanced equation always equal to the number of total atoms on the right side of the equation?