A chemist mixes 18.0 g of ethanol with 61.0 g of thiophene and 27.0 g of methanol. Calculate the percent by mass of each component of this solution. Be sure each of your answer entries has the correct number of significant digits. | Component | Mass Percent | |------------|---------------| | Ethanol | % | | Thiophene | % | | Methanol | % | There is an input area for each mass percent value. To the right, there is a small panel with icons for numerical operations: a checkbox with "x10" for multiplying by ten, an "X" for clearing or deleting, a curved arrow for resetting, and a question mark for help or hints.

Calculate the volume in milliliters of a 1.64M sodium thiosulfate solution that contains 150. g of sodium thiosulfate (Na₂S₂O3). Round your answer to 3 significant digits. mL x10 X Ś

A 125ml sample of an 8.2 M NaCl solution is diluted to 3.0 L . What volume of the diluted solution contains 10.8  g  of  NaCl ? Express your answer using two significant figures.

Suppose 345. mL of dioxane and 298. mL of toluene are mixed, and the final solution has a volume of 637. mL. Note that the density of dioxane is 1.03 g/mL. Calculate the volume percent of dioxane in this solution. Be sure your answer has the right number of significant digits. % (v/v) X

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

Can you please help me answer the homework

You have been hired as a lab assistant! your first task is to make 5.0 L of a solution that is 35.8% NaCl (salt) by weight water. How much salt should you add to the 5.0 L of water to prepare this solution? Report the mass of salt in kilograms

A chemist makes 380.mL of magnesium fluoride MgF2 working solution by adding distilled water to 20.0mL of a 18.8μmolL stock solution of magnesium fluoride in water. Calculate the concentration of the chemist's working solution. Round your answer to 3 significant digits.

If I add 646.84 g of magnesium chloride to 1,727.72 grams of hexane, what will the resulting boiling point of the new solution be? The boiling point of hexane is 68 ⁰C and Kb(C6H14) = 2.90 ⁰C/m. Don't round until the end and use two digits after the decimal

A chemist mixes 55.9 g of water with 28.0 g of 2-methylpyrazine and 48.5 g of acetic acid. Calculate the percent by mass of each component of this solution. Round each of your answers to 3 significant digits. component water 2-methylpyrazine acetic acid mass percent x10 X