A 2.0 liter insulated container holds 0.10 moles of oxygen at a pressure of 1.9 atm. If the atomic mass of an oxygen molecule is 32 u, the average speed of a molecule in the container is equal to?

600m/s

490 m/s

250 m/s

400 m/s

420 m/s

a vegetable oil has a specific heat of 0.60 cal/g degree celcius the amount of heat required to raise the tempratuee of 100 g of the oil from 70 degree Fahrenheit to 115 degree fahrenheit is equal to

6.8 kcal

18 kcal

2.7 kcal

1.5 kcal

0.43 kcal

a puff of steam at 100 degree celcius is added to 100 g of ice at 0 degree Celsius in a insulated container resulting in water only at 14 degree celcuis the mass of added steam is equal to? 17 g

13 g

11 g

21 g

15 g