How many moles are present in 2.6 g of CO2?

0.059 moles are present in 2.6 g of CO₂

Explanation:

Molar mass is the mass of one mole of a substance, which can be an element or a compound. That is, it is the amount of mass that a substance contains in one mole.

In this case, the mass of each element being:

then the molar mass of the compound is:

CO₂=  12 g/mole + 2*16 g/mole= 44 g/mole

Then you can apply the following rule of three: if by definition of molar mass 44 grams of CO₂ are present in 1 mole, 2.6 grams will be present in how many moles?

amount of moles= 0.059 moles

0.059 moles are present in 2.6 g of CO₂

im not exactly sure but i think its b!

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer