QUESTION 8 The mass of one mole of water is 18.02 g. True O False Click Save and Submit to save and submit. Click Save All

Calculating molarity using solute moles chemist prepares a solution of potassium dichromate (K₂Cr₂O₂) by measuring out 37. μmol of potassium dichromate into a 350. mL volumetric flask and ling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's potassium dichromate solution. Round your answer to 2 significant digits. mmol L Explanation 10 Check X S 4 99+ 11 Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Accessib

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QUESTION 5 A chemist has a 125 mL of a 5.0 M solution. He needs to have 500 mL of solution. What is the new molarity of the solution? Show credit will be given. 1250 M O 1.25 M O 20 M 12500 M Click Save and Submit to save and submit. Click Save All Answers to save all answers. fs f6

Una masa de mercurio ocupa 0.750 L Qué volumen ocuparla una masa igual de etanol? La densidad del mercurio es de 13.546 g/ml y la densidad del etanol es de 0.789 g/ml. a. 0.0437 L b.0.0777L Oa. 12.9L Od. 22.9L QUESTION 5 Cuando dos materiales tienen diferentes densidad como el agua y el aceite, se encuentran intercambian densidades b. se mezclaran uniformemente se repelan uno al otro se separan de acuerdo a sus densidades Chick Save and Suhmit to save and submit. Click Save All Aners to save all unmoers Save All Answers

11 12 13 14 15 16 17 18 19 Any units will do. For example, let's use the unit of "dozens": 2 dozen of H2 particles + v dozen of O2 particles - dozen water particles NEXT QUESTION O ASK FOR HELP 20

Pearson myLSU O Stoichiometry Using molarity to find solute moles and solution volume 0/5 A chemist adds 405.0 mL of a 4.2 mol/L silver nitrate (AgNO3) solution to a reaction flask. Calculate the millimoles of silver nitrate the chemist has added to the flask. Round your answer to 2 significant digits. Sarah V

Use the References to access important values if needed for this question. If 21.2 grams of an aqueous solution of manganese(II) chloride, MnCl, contains 3.65 grams of manganese(II) chloride, what is the percentage by mass of manganese(II) chloride in the solution? % MnCl2 Submit Answer Retry Entire Group 9 more group attempts remaining Previous Nex Say Cengage Learning | Cengage Technical Support 100% 11 近

Adding helium to a balloon increased its volume from 519.8 mL to 3.917 L. If the final number of moles of helium in the balloon is 11.5 mol, what was the initial number of moles of helium in the balloon? Assume the balloon contained only helium initially.   ____ mol

5. What molarity will 25 grams of glucose (C,H1206) and 300 mL of water make? 86 words Comments... Cancel Submit Assignment 山T@ OCT tv MacBook Pro