1. Balance the following equation, which describes the decomposition reaction which happens when potassium chlorate is heated: KCIO31s) KCl)

Aspirin can be synthesized in the lab by combining salicylic acid (C,H,0,) and acetic anhydride (C,H,O,) to form aspirin ( C, H,O,) and acetic acid (C,H,O,). The balanced equation for this reaction is C,H,O, + C,H,O, → C,H¿O4 + C,H,O, A student started with 4.02 mL acetic anhydride (density of aspirin. = 1.08 g/mL) and 2.41 g salicylic acid. The student synthesized 2.41 g Select the limiting reactant. acetic anhydride (C,H,O,) salicylic acid (C,H,0,) O acetic acid (C,H,O,) aspirin (C,H¿O,) Calculate the theoretical yield of aspirin (C,H,O4). theoretical yield: g Calculate the percent yield for aspirin (C,H,O4). percent yield:

The reaction for producing glucose in plants, called photosynthesis, is   6CO2+6H2O−→−−lightC6H12O6+6O2 6CO2+6H2O→lightC6H12O6+6O2    If a plant produces 5.81 mol C6H12O6,5.81 mol C6H12O6, how many moles of CO2CO2 are needed? moles CO2CO2:

One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate.   Suppose an EPA chemist tests a 250.mL sample of groundwater known to be contaminated with iron(III) chloride, which would react with silver nitrate solution like this: FeCl3 (aq) + 3AgNO3 (aq) → 3AgCl (s) + FeNO33 (aq)The chemist adds 86.0m M silver nitrate solution to the sample until silver chloride stops forming. He then washes, dries, and weighs the precipitate. He finds he has collected 7.5mg of silver chloride.   Calculate the concentration of iron(III) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits.

Write the full balanced equation with state signs for: An aqueous solution of Iron (II) Chloride is mixed with aqueous Sodium Phosphate forming solid Iron (II) Phosphate and Sodium Chloride.

Aspirin can be synthesized in the lab by combining salicylic acid (C,H,0,) and acetic anhydride (C,H,0,) to form aspirin ( C,H,O.) and acetic acid (C,H,O,). The balanced equation for this reaction is C,H,0, + C,H,O, → C,H,0, + C,H¸0, A student started with 3.33 mL acetic anhydride (density = 1.08 g/mL) and 2.61 g salicylic acid. The student synthesized 2.53 g of aspirin. Select the limiting reactant. salicylic acid (C,H,O,) acetic anhydride (C,H,0,) aspirin (C, H,O,) acetic acid (C,H0,) Calculate the theoretical yield of aspirin (C,H, O,). theoretical yield: uloto the percent yield for aspirin (C, H, O).

The reaction for producing glucose in plants, called photosynthesis, is   6CO2+6H2O−→−−lightC6H12O6+6O2 6CO2+6H2O→lightC6H12O6+6O2    If a plant produces 7.56 mol C6H12O6,7.56 mol C6H12O6, how many moles of CO2CO2 are needed?

A tiny sample of an aqueous solution of two substances R and P is sketched below, as if it was under an imaginary microscope so powerful that individual molecules could be seen. (The water molecules are not shown.) 8 R and P can interconvert. That is, R can turn into P, and P can turn back into R: 113 5 R (aq)=P(aq) R P number of R molecules: number of P molecules: K= The equilibrium constant K for this equilibrium is interconversion reaches equilibrium. $3/1₁ Predict the number of R and P molecules in this sample when the . X

Balance the chemical reaction below:   _Pb(OH)2     +     _NaCl     =>     _PbCl2     +     _NaOH     What coefficient goes in front of NaOH?

One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. Suppose an EPA chemist tests a 200.mL sample of groundwater known to be contaminated with iron(III) chloride, which would react with silver nitrate solution like this: FeCl3 (aq) + 3AgNO3 (aq) →3AgCl (s) + (FeNO3)3 (aq) The chemist adds 48.0mM silver nitrate solution to the sample until silver chloride stops forming. She then washes, dries, and weighs the precipitate. She finds she has collected 7.5mg of silver chloride. Calculate the concentration of iron(III) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits.