Convert 25.6 L of a gas at STP to molecules

Astudent states that 9.0 g of baking soda will form an unsaturated solution in 100 g of water. what do you need to know to decide whether this statement is correct? a. the temperature of the water and the molar mass of baking soda b. the percent by volume of the solution and the solubility of baking soda c. the temperature of the water and the solubility of baking soda at that temperature

Can anyone answer these questions? ? i need it before 1: 00pm today

Drag each pressure unit with the corresponding number to describe standard atmospheric pressure