* Use the periodic tableHow many grams of O2 are in a 5.0 mol of the element?80 g16 g160 g

8 answers
Question:

* Use the periodic table How many grams of O2 are in a 5.0 mol of the element?
80 g
16 g
160 g

Answers

160. you use a mole over grams ratio. 5.0x32mass of O2)

160 maybe is the correct answer

160g of o2 is the answer.

How many grams of O2 are in a 5.0 mol of the element?

A. 16 g

B. 80 g

C. 160 G

if im wrong correct me but have a blessed day/night

=)

The answer is C, 160 g

We are tasked to find the amount of O2 in grams given only the number of moles of oxygen gas. To solve the problem, we need first to calculate the molecular weight of oxygen. Based on the periodic table, elemental oxygen has a molecular weight of 16 g/mol. Thus its molecular weight is,
O2=16.0g/mol (2)=32 g/mol

To solve for the amount of compound oxygen in grams, we have,
O2 (g)=5 mol x 32 g/mol =160 g.

This cancel out the mols both in the numerator and denominator leaving only the g as a unit. Therefore, 5 mols of oxygen is equal to 160 g of oxygen.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

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