What is the charge of an ion that contains 21 protons and 19 electrons?

Determined that all animals were mad of cells

Is water compressible?

If an ecosystem element is destroyed, the ecosystem may still be considered sustainable. True False

340.5 g of sodium bromide To moles of sodium bromide

In humans, having freckles is dominant over not having freckles. Neither George nor Ruth has freckles. What percentage of their children will have freckles?

Which of the following solutions is a good buffer system? Which of the following solutions is a good buffer system? a solution that is 0.10 M HF and 0.10 M LiC2H3O2 a solution that is 0.10 M HC2H3O2 and 0.10 M LiC2H3O2 a solution that is 0.

Which formula shows a substance that is not molecular?

Brainstorm how you could run a pcr reaction if you did not have access to a thermal cycler.

Ch4+br2=ch3br+hbr which type of reaction does this equation represent

Would you use sandstone or slate for building