Can someone me with these problems? see the attachment, .

A) CH4 + 2O2 —> CO2 + 2H2O

B) assuming STP, you will use the 22.4 L to convert to moles (22.4 L in one mole at STP), then convert between compounds using mole to mole ratio from the balanced equation for B C & D

You have 0.650 L of CH4

0.650 L = 1 mole CH4 = 0.029 moles CH4
——————
22.4 L CH4

Now use mole ratio to convert CH4 to O2
(Ratio of 1 mole CH4 for every 2 moles O2)

0.029 moles CH4 = 2 moles O2 = 0.058
——————
1 mole CH4

Now change back to liters

0.058 mole O2 = 22.4 L O2 = 1.3 L O2
—————
1 mole O2

C)

0.029 moles CH4 = 1 mole CO2 = 0.029
——————
1 mole CH4
(0.029 moles CH4 is used again since if we start with 0.650 L of CH4 the mole will be 0.029, just saves calculations :) )

0.029 mole CO2 = 22.4 L CO2
——————
1 mole CO2
= 0.65 L CO2

D) 0.029 mole CH4 = 2 mole H2O = 0.058
——————
1 mole CH4

0.058 mole H2O = 22.4 L H2O = 1.3 L H2O
——————
1 mole H2O

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.