, express their function (specify -if they can be used to measure- if their measurements are approximate or relatively exact) Erlenmeyer flask beaker burette

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A solution is made by mixing 5.40 g of toluene, CH8(1), with 954. mL of chloroform, CHCI3(1). Calculate the concentration of the solute in the solution using the units given below. (Density of = 0.867 g/mL. Density of chloroform = 1.49 g/mL. Assume volumes mix additively.) toluene Enter your answers in decimal form to 3 significant figures. Do not enter units since they are already provided. Molar: molal: m mole fraction: mass percent: %(m/m) percent volume: %(v/v)

In 2014 (the last year for which I can find data), Utah County had a carbon monoxide (CO) average concentration of 1.90 ppm. (1 ppm stands for 1 part per million which means in one million volumes of air—choose whatever volume unit you like—there would be one volume of carbon monoxide.) An average human takes inhales 0.50 L per breath and takes 20 breaths per minute. Carbon monoxide in the atmosphere has a density of 1.2 grams per liter. 3. How many milligrams of carbon monoxide would a person in Utah County inhale in an 8 hours?

How many moles of sodium hydroxide, NaOH, are present in 1.73 L of a 0.157 M sodium hydroxide solution? Place your answer in the box. Express your answer using only a number without text. Report your result in decimal notation and to the proper number of significant figures. All numbers are measured.

A student prepared a standard copper solution by combining 2.63 mL of stock 0.270 mol/L copper(II) sulfate solution with 6.37 mL of water. What is the molar concentration of Cu2+ in this solution? Give your answer in in decimal format. When entering units, use proper abbreviated units with proper capitalization.

A student prepares a 0.70 mM aqueous solution of butanoic acid (C,H,CO2H). Calculate the fraction of butanoic acid that is in the dissociated form in his solution. Express your answer as a percentage. You will probably find some useful data in the ALEKS Data resource. Round your answer to 2 significant digits. ① % X 나

How many liters of 0.250 M NaOH solution can be prepared from 10.0 g of NaOH? Place your answer in the box. Express your answer using only a number without text. Report your result in decimal notation and to the proper number of significant figures. All numbers are measured.

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

Which statement is correct?