i have 4 moles of co₂. how many molecules of co₂ is this?

a) 12 molecules co₂
b) 6.02x10²³ molecules co₂
c) 2.41x10²⁴ molecules co₂
d) 1.20x10²⁴ molecules co₂

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?