question $1$: A sugar crystal contains approximately $3\mathrm{.}0{10}^{17}$ sucrose $(C_{12}{H}_{22}{O}_{11})$ molecules.

Part A

What is its mass in $mg?$

Express mass in milligrams to two significant figures.

question $2$:

people often use sodium bicarbonate as an antacid to neutralize excess hydrochloric acid in an upset stomach.

Part A

What mass of hydrochloric acid $($in grams$)$ can $1\mathrm{.}8g$ of sodium bicarbonate neutralize? $($Hint$.$ Begin by writing a balanced equation for the reaction between aqueous sodium bicarbonate and aqueous hydrochloric acid.$)$

Express your answer in grams to two significant figures. PLEASE HELP WITH BOTH, thank you very much