Question

2. green plants take in water and carbon dioxide and produce glucose and oxygen gas. calculate the molar masses of carbon dioxide, glucose,and oxygen gas.

3.an aspirin tablet contains 75 mg of aspirin, which has the molecular formula, C9H8O4. how many moles of aspirin are in the tablet?, how many molecules of aspirin are in the tablet?

4.several isotopes of curium can be synthesized ny bombarding 239Pu with alpha particles. write a balanced nuclear equation describing the reaction that produces 240Cm.

4.

Answer 1

2) 6CO₂ + 6H₂O ----> C₆H₁₂O₆ + 6O₂

Atomic mass C = 12 g/mole

atomic mass of O = 16 g/mole

atomic mass of H = 1 g/mole

Thus, molar mass of CO₂ = 44 g/mole

Molar mass of H₂O = 18 g/mole

Molar mass of O₂ = 32 g/mole

3) Molar mass of aspirin = 180 g/mole

Thus, moles of aspirin in 0.075 g of it = mass/molar mass = 0.075/180 = 0.00042

number of molecules of aspirin = moles*Avagadro's Number = 0.00042*6.022*10²³ = 2.509*10²⁰

4) ²³⁹Pu + ⁴He²⁺ ------> ²⁴⁰Cm + 3n¹₀