The chemical equation for burning methane is shown below. CH4 + 202 → CO2 + 2H20
? 9
4.5 g 2.99 3.99
What mass of methane gas (CH) is required in order to follow the Law of
Conservation of Mass?
11.33g
6.83g
3.55g
2.35g

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

Geothermal energy for industrial use is available almost anywhere. a.true b.false

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.