How many air molecules are in a
10.5×12.0×10.0 ft
room (
28.2 l=1 f
t
3
)? assume atmospheric pressure of 1.00
atm
, a room temperature of 20.0
∘
c
, and ideal behavior.

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Remember to use the proper number of significant figures and leading zeros in all calculations.gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass? 2540 g2500 g3.9 x 10-43.937x 10-4

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g