Early models of our solar system were usually based on experimentation

the best science of the time

the discoveries

of the best scientists

philosophy and religion

Ions of the elements oxygen (O), sulfur (S), and selenium (Se) usually have charges of 2-. Ions of the elements fluorine (F), chlorine (Cl), and bromine (Br) usually have charges of 1-.

How did Niels Bohr describe electrons in his atomic model?

How many pounds of iron will it take to construct the bridge over the hoover dam

How many atoms are in SO (subscript 3)

The common name of sodium chloride.

If The mass of a box is increased and the force stay the same, determine the relationship with acceleration

A balloon contains 0.15 moles of co2 gas. how many molecules of co2 are in the balloon?

Acids A) are generally proton donors B) produce H + ions in solution C) are electron pair acceptors D) may include all of these characteristics

3.011 x 10^23 atoms F in grams

What would you use if you needed to determine the density of an object? balance and graduated cylinder balance and scale scale and spectroscope