Question 2 For the compound below, the number of 1°, 2° and 3° hydrogens, respectively is O 1, 3, 1 O 3, 6, 2 O 3, 6, 1 O 1, 6, 0

or quick access, place your favorites here on the favorites bar. Manage favorites now 72°F Sunny Question 11 of 14 Determine the number of atoms of O in 57.4 moles of Al2(CO3)3. CI +

Phosphoric acid is a colorless, syrupy liquid used in detergents, fertilizers and carbonated beverages. What is the molecular weight for this compound. (Use the atomic masses from the description.) H - 1.008 amu; P = 30.97 amu; 0 - 16.00 amu 90.97 g/mol 79.99 g/mol 97.99 g/mol 99.97 g/mol Using the molecular weight from the previous question, what is the percentage by mass of hydrogen in phosphoric acid? 3.860% 1.290% 3.086% 1.029% Using the molecular weight from the previous question, what is the percentage by mass of phosphorus in phosphoric acid? 31.16% 31.61% 36.31% 36.13%

Odd or Even Number of Nitrogen atoms in the Molecule: Once you have found the mol ion, check to see if its molecular weight is odd or even. If the mass is even, then there will be an even number of Nitrogen atoms in the molecule (e.g. 0,2,4,6, etc.) If the mass is odd, then there will be an odd number of Nitrogen atoms in the molecule (e.g. 1,3,5, etc) Practice to prove to yourself that this is correct. What are the molecular weights of each molecule on the next page? Do the odd MW molecules have an odd number of N's? Do the even MW molecules have and even number of N's? (Note: when calculating molecular weight for MS, use only real, whole- number values for the weight of each atom-do not use the averages printed on a periodic table.) HN NH H. N. NO2 N. H. Atom Mass Atom Mass H. 1 N 14 C 12 16

Can you please solve this question and show all of the steps to the solution

how would you calculate the percent mass of Nacl in the formula 2NaCl + Pb(NO3)2 = PbCl+2NaNO3

(NH₄)₂Cr₂O₇ --> N₂ + 4H₂O + Cr₂O₃ The equation is already balanced. How many Oxygen atoms are on either side of the equation?

Determine the molecular or formula mass of each of the following compounds. (For this exercise, round all atomic masses to one decimal place.) (a) FeO (b) Fe2O3 (c) CuI2 (d) Na3PO4 (e) Mg(OH)2 (f ) NiBr2 (g) Hg3(PO4)2 (h) (NH4)2CO3

Freon _12 (ccl2Fe) is used  as a refrigerant in air conditioners and as a proppellant in aerosol cans.calculate the number of chlorine molecules in 7.56 mg

I'm taking a practice test and I'm having some trouble and was hoping you could help.  This is not graded I just need help See attached: