A)  Calculate the molarity 12.21 mg KI in 107.6 mL of solution         Express your answer using four significant figures.   B) A chemist wants to make 6.0 L of a 0.310 MCaCl2 solution. What mass of CaCl2 (in g) should the chemist use?         Express your answer in grams using two significant figures.

A chemistry student weighs out 0.166 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 0.1300 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Round your answer to 3 significant digits.

A chemist prepares a solution of silver perchlorate (AgClO,) by weighing out 2.40 kg of silver perchlorate into a 500. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in g/dL of the chemist's silver perchlorate solution. Be sure your answer has the correct number of significant digits. x10 đL

You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with 323.1 mL of a 7.465 M isopropyl alcohol solution, and dilute it with pure water. After the dilution, you end up with a 1.856 M solution. What is the final volume of the solution after the water has been added? Enter your answer in the units of L (liters), do not enter the unit.

A titration of vinegar was conducted using 0.756 M NaOH. In total, 30.54 mL of NaOH were added when the solution turned pink. How many moles of NaOH were involved in the reaction? Write your answer in standard notation with the correct number of significant figures. You do not need to include units.

An aqueous solution of sodium chloride,NaCl , is made by dissolving 1.01 grams of sodium chloride in sufficient water in a 50.0 mL volumetric flask, and then adding enough water to fill the flask to the mark. What is the weight/volume percentage of sodium chloride in the solution? Weight/volume percentage =           %

O MEASUREMENT Adding or subtracting and multiplying or dividing measurements A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. 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: 1.5 g • She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed 36.669 g. • She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was 37.11 mL. What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits. g mL Explanation -1 Check 99+ 0/5 VUDU © 2023 McGraw Hill LLC. All Rights…

Aqueous hydrochloric acid  HCl  will react with solid sodium hydroxide  NaOH  to produce aqueous sodium chloride  NaCl  and liquid water  H2O . Suppose 1.5 g of hydrochloric acid is mixed with 0.608 g of sodium hydroxide. Calculate the maximum mass of water that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits

The average concentration of dissolved gold in earth's oceans is  5.8 x 10^−9 g/L. of ocean water.How many micrograms of gold are in 1.1x10^3 m^3 of ocean water?    (1 ml = 1 cm3)

mol L A chemist must prepare 850. mL of 2.00 M aqueous silver nitrate (AgNO3) working solution. He'll do this by pouring out some 4.47 aqueous silver nitrate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the silver nitrate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.