This is the chemical formula for acetic acid (the chemical that gives the sharp taste to vinegar): CH;CO,H An analytical chemist has determined by measurements that there are 30.3 moles of carbon in a sample of acetic acid How many moles of hydrogen are in the sample? Be sure your answer has the correct number of significant digits.

A chemistry student weighs out 0.0513 g of sulfurous acid (H,SO,), a diprotic acid, into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1500 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits. O ml |mL x10

Do not give handwriting solution.

Suppose 1.47 g of zinc iodide is dissolved in 100. mL of a 76.0m M aqueous solution of potassium carbonate. Calculate the final molarity of zinc cation in the solution. You can assume the volume of the solution doesn't change when the zinc iodide is dissolved in it. Be sure your answer has the correct number of significant digits.

A chemist prepares a solution of iron (II) chloride (FeCl₂) by measuring out 1.0 g of FeCl₂ into a 250. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Canions in the chemist's solution. Be sure your answer is rounded to 2 significant digits. 7 mol L 0x x10 X Ś

Nicotine is an alkaloid that is derived from tobacco plants that acts as a stimulant on the human nervous system. It has the molecular formula C10H14N2. Calculate its molar mass to 3 decimal places. You do not need to include units for this particular answer, which would otherwise be g/mol.

Suppose 20.8 g of lead(II) nitrate is dissolved in 150. mL of a 0.70 M aqueous solution of ammonium sulfate.  Calculate the final molarity of nitrate anion in the solution. You can assume the volume of the solution doesn't change when the lead(II) nitrate is dissolved in it.    Be sure your answer has the correct number of significant digits.

Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose (C 6 H 12 O 6) and oxygen (O 2 ) . Calculate the moles of glucose produced by the reaction of 0.075 mol of water. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

A chemistry student must write down in her lab notebook the concentration of a solution of potassium chloride. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 1.55 g • She put some solid potassium chloride into the graduated cylinder and weighed it. With the potassium chloride added, the cylinder weighed 31.436 g. • She added water to the graduated cylinder and dissolved the potassium chloride completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 166.4 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. -1 g.mL x10 × Ś

Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous sodium bromide  NaBr  and liquid water  H2O . Suppose 3.24 g of hydrobromic acid is mixed with 1.0 g of sodium hydroxide. Calculate the maximum mass of sodium bromide that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits.