How many moles of PbS are equivalent to 458g PbS

Helium (He) and neon (Ne) are elements in Group 8A of the periodic table. How do the electron dot diagrams of these elements compare? A. The electron dot diagram of helium has six fewer electrons than the electron dot diagram of neon. B.

Mrs. Franklin loves teaching science and thinks about it all the time. While walking one day, she steps on a warm, fresh piece of used gum. The gum flattens and sticks to her shoe.

How many moles of KBr are present in 8.96 x 10^21

Why is it impossible for a machine to give you more energy output than the amount of energy put into it? A: This would violate the law of conservation of energy B: This would cost too much C: This would produce too much wasted heat

In terms of pH what would happen if you mixed vinegar with a solution of ammonia. What type of product will form?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda