N2H4 (l) --> N2 (g) + 2 H2 (g) 2 H2 (g) + O2 (g) --> 2 H2O (l)
- If you lost some of your hydrogen gas during your reaction and only produced 7.25 g of H2 (g) how many grams of water will you produce?
1g = 1ml and 1 L = 1000 ml
- How many liters of water will this produce?
- Watney needs 618L of water to survive on Mars until the next mission arrives and can rescue him. Does 7.25g of H2 produce enough water for him to survive?

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 l tank and at a temperature of 301 k? (r=0.0821 l·atm/mol·k) 3.08 atm 1.2 atm 0.23 atm 4.01 atm 4.94 atm

The chemical formula for emerald is be3al2(sio3)6.an emerald can be decided as