What mass of Zn (in g) would be required to completely react with 1.40 L of 0.750 M HBr in the following chemical reaction? Zn(s) + 2 HBr(aq) → ZnBr₂ (aq) + H₂(g)

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

How many atoms are in 2 moles of phosphorus