4. What is the total number of kilojoules required to boil 100. grams of water at 100°C and 1 atmosphere?

A) 22.6 kJ

B) 33.4 kJ

C) 226 kJ

D) 334 kJ

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.