Each element is made up of only one kind of ...

If a cube has a volume of 2cm3 and amass of 12.8 grams what is its density

Which substance does not obey the Lewis octet rule? a. O₂ b. NO c. CO d. N₂ Can anyone explain this one for me?

Choose the best description for prokaryotic cell. A) has a nucleus; found in multicellular organisms B) has no nucleus; found in unicellular organisms C) has no nucleus; found in multicellular organisms D) has a nucleus;

A substance with a pH of 9 has A) no H30 + ions or OH - ions. B) more H30 + ions than OH - ions. C) more OH - ions than H30 + ions. D) the same number of H30 + ions as it does OH - ions.

Suppose you increase your walking speed from 7 m/s to 12 m/s in a period of 2 s. What is your acceleration?

Regalo puntos : v vengan a mi prros

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of phosphoric acid (h3po4) and potassium hydroxide are combined. assume excess base. use the pull-down boxes to specify states such as (aq) or (s).

What are the coefficients that will balance the skeleton equation below? n + h ⟶ nh?

Restate Newtons first law in terms of acceleration

Why is burning is not a recommended method of disposing plastics