URGENT HELP, ON A TEST RIGHT NOW. 25 POINTS 1. Calculate the number of moles

2.Calculate the mass in grams of:

3.In each of the following quantities of matter calculate:

4.A molecule composed of carbon C and chlorine Cl has a molecular mass of 154 u. Knowing that

the carbon atom has an atomic mass of 12 u and that there is only one in the molecule,

determines the brute formula of the molecule

5.A molecule composed of carbon C and chlorine Cl has a molecular mass of 154 u. Knowing that

the carbon atom has an atomic mass of 12 u and that there is only one in the molecule,

determines the brute formula of the molecule

6.Calculate the molar concentration of 500 mL of a solution containing 1.5 g of HCl