What mass of CO2 in g will form when 8.94 g

B 6.15g.

Explanation:

As per the chemical equation, the reaction ratio between O2 and CO^2 is 2:1, which indicates there is 1 mole of CO^2 produced for every 2 moles of O2 responded.

Now we have to apply the molar mass and mass of O^2 to determine the moles of O^2 i.e

As we know that

= 0.2794 mole.  

So,  the moles of CO2 that produced is

= 0.1397 mole

Now we have to apply the moles and molar mass CO^2 to find out the mass of CO^2 which is shown below:

As we know that

= 6.15 g

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

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