What is the number of Joules needed to change 40.0 grams of water at 100°C to steam at the same temperature and pressure?

1.13,360 J

2.90,400 J

3.167.2 J

4.16,720 J

What is significant about the elements within the same group of the periodic table?

1. CaSO4 (s) ⇋ Ca2 + (aq) + SO42 - (aq) When Na2SO4 is added to the system, how will the equilibrium shift? A) The system will shift left and the amount of CaSO4 would increase. B) The system will shift left and the amount of CaSO4 would decrease.

Is fluorine a halogen

What is the temperature of 4.75 moles of a substance at a pressure of 1.2 atm and a volume of 0.125 L? Use 0.0821 for R and significant digits (2 in this case). Report your answer in Kelvin.

How many electrons should each atom be surrounded by in a covalwent bond?

Name 5 types of alloys

What is the 3 types of matters

A sunflower turns its head toward sunlight. What triggers this behavior in a sunflower? gravity phototropism presence of nutrients presence of water

Enter your answer in the provided box. A sample of an unknown gas effuses in 14.5 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.42 min. What is the molar mass of the unknown gas

What volume will 0.710 moles of nitrogen gas occupy at STP?