A chef combines solid and liquid ingredients in a pan to make a sauce. The chef wants to remove the solid pieces and then thicken the sauce by removing some of the water. Which processes should the chef use?

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

i'm assuming that the correct answer is indeed the first one/ "a"..

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2