How many d are in 3 f

When a substance evaporates, what happens to the mass? The mass increases as it changes from a liquid to a gas. The mass decreases as it changes from a liquid to a gas. The mass stays constant as it changes from a liquid to a gas.

What is meant by the negative sign in an answer like"-46.8kJ"? When would you use a positive sign

Nitric oxide (no) reacts with oxygen gas to form nitrogen dioxide (no2), a dark brown gas: 2no (g) + o2 (g) → 2no2 (g) in one experiment, 0.863 mol of no is mixed with 0.501 mol of o2. determine which of the two reactants is the limiting reactant.

Who originally observed the constellations in the sky?

1. protons plus neutrons 2. proton number 3. neutral charge 4. positive charge 5. smallest particle to retain characteristics 6. negative charge atomic mass atom electron proton neutron

If you are given only the mass number of neutrons, how do we find an atomic number?

You need to make an aqueous solution of 0.223 M barium bromide for an experiment in the lab, using a 250 mL volumetric flask. How much solid barium bromide should you add?

What is wosutah unsrcambled

How many moles of al2o3 are formed when 0.78 mol o2 reacts with aluminum?

The dissociation of a weak electrolyte is suppressed when