I need help solving all of these pelase with work being shown... Tartaric acid h

Question

I need help solving all of these pelase with work being shown...

Tartaric acid has a molar mass of 150.1 g/mole and contains 63.9 % oxygen by water. Show many oxygen atoms are in each tartaric acid molecule? 3 4 5 6 8 If 50.0 g of O_2 are mixed with 50.0 g of H_2 and the mixture is allowed to react, what mass of water is produced? (molar mass: H_2 O = 18.01 g/mol) O_2 (g) + 2 H_2 (g) rightarrow 2 H_2 O (g) 50.0 g 56.3 g 65.7 g 71.4 g 100.0 g Palladium (molar mass = 106.4 g/mole) crystallizes in a face-centered cubic system. What is the mass of a unit cell of palladium? 6 02 times 10^23 g 7.07 times 10^-22 2.22 times 10^-24 g 106.4 g 5.55 times 10^-23 g A metal crystallizes in a face-centered cubic lattice. The radius of the atom is times 10^-8 cm. What is the volume of the unit cell? 1.73 times 10^-22 cm^3 0.611 times 10^-22 cm^3 5.22 times 10^-22 cm^3 3.08 times 10^-22 cm^3 8.85 times 10^-22 cm^3 enzyme and toluene form ideal solutions. At 35 degree C the vapor pressure of benzene is 160 torr and toluene is 50.0 torr. What is the total vapor pressure in a closed container that has a solution of 3.2 moles benzene and 4 8 moles of toluene? 105 torr 94 torr 64 torr 28 torr If 20.0 g sample of a nonelectrolyte is dissolved in 100 g of water, the resulting solution will freeze at - 0.93 degree C (the freezing point constant is 1.86 degree C/m). Find the molar mass of the nonelectrolyte. 10 g/mole 50 g/mole 100 g/mole 200 g/mole 400 g/mole For the equilibrium: PCl_5(g) PCl_3(g) + Cl_2(g) K_c = 4.0 at 228 degree C. Pure PCl_5 is added to the vessel and allowed to reach equilibrium. At equilibrium there is 0.16 M PCl_5. What is the equilibrium concentration of PCl_3? 0.16 M 0.20 M 0.40M 0.80 M 1.6 M

Explanation / Answer

(61) 63.96 % by mass

so, 100 g. of tartaric acid has 63.96 g. of Oxygen

then, 150.1 g. of tartaric acid has 63.96 * 150.1 / 100 = 96.0 g. of oxygen

Moles of Oxygen = 96.0 / 16 = 6 mol

So, each tartaricacid molecule has 6 oxygen atoms.

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