How many moles of copper (cu) are in 65.8 g cu? a.1.04 mol cu b.10.9 mol cu c.41.7 mol cu d.63.5 mol cu

The correct answer is A) 1.04 mol Cu

{65.8 g     /   63.55 g/mol}

= 1.04 mol Cu

Explanation:

In  63.55  g  of copper metal there are  1 m o l  of  C u  atoms. By dividing the mass of Cu and molar mass, we can easily get the number of moles.

How many moles of copper (Cu) are in 65.8 g Cu?

1.04 mol Cu CORRECT ANSWER

10.9 mol Cu

41.7 mol Cu

63.5 mol Cu

I took the test and A) was correct

b. acid is the correct answer @jayxboof all social media

acid : acids are those which accepts an electron-pairs.

base : bases are those which donates ab electron-pairs.

alkali : it is a base that dissolves in water. it is basically a base and the ph greater than 7.

hydroxide ion : it is a poly-atomic ion which is negatively charged.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.