A net force of 66 newtons accelerates a child at 2.0 m/s? down a smooth playground slide. What is the mass of the child?

A 130 kg
B68 kg
© 64 kg
D 33 kg

How air particles exert a pressure on the inside of the balloon

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

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?