About how many stars does the Milky Way Galaxy contain?

OA) 900 thousand

OB) 300-500 million

OC) 200-400 billion

OD) 2 trillion

Determine the moles of oxygen gas (O2) needed to completely react with 1.975 moles of hydrogen gas (H2).

Covalent bonds are formed in order to:

What happens to the temp of the liquid in a cup if water as some of the water evaporates

If 4 orbitals on one atom overlap 4 orbitals on a second atom, how many molecular orbitals will form? A - 1 B - 4 C - 8 D - 16 E - none of these

Choose the correct coefficients to balance the following equation: __CaCO3 + __HC; Produces __CaCl2 + __CO2 + __H2O

How many particles are in 3.55 moles of Aluminum Sulfate

Major geological events that occur when plates shift suddenly and released stored energy: A. Volcanic eruptions B. Earthquakes C. Antarctic plate D. Spreading ridges

How does a salt bridge improve a battery

Hat information is needed to determine the energy of an electron in a many-electron atom?

Write the formulas for the following compounds: (a) copper (l) cyanide, (b) strontium chlorite, (c) perbromic acid, (d) hydroiodic acid, (e) disodium ammonium phosphate, (f) potassium dihydrogen phosphate, (g) iodine heptafluoride, (h)