MOLE RATIOS IN CHEMICAL EQUATIONS PRELAB QUESTIONS NAME When chromium metal is added to copper sulfate, there are two possible reactions: (a) Cr + CuSO4 CrSO4 Cu (b) 2Cr 3CuSO4 Cr2(SO4)3 3Cu 1. THEORETICAL RATIOS, GIVEN BY EQUATION What is the ratio of moles Cr to moles Cu shown in equation (a)? Express this ratio as a fraction, moles Cr divided by moles Cu. Do the division and express the number to three significant figures. What is the ratio of moles Cr to moles Cu shown in equation (b)? Express this ratio as a fraction, moles Cr divided by moles Cu. Do the division and express the number to three significant figures. 2. EXPERIMENTAL RATIO 1.50 g of chromium is added to a solution of CuSO4. 2.75 g of Cu were formed. Calculate moles of chromium. Calculate moles of copper. Divide moles Cr by moles Cu, expressing the ratio to three significant figures. SHOW ALL WORK. Compare to part 1. Which reaction occurred, (a) or (b)? 63

MOLE RATIOS IN CHEMICAL EQUATIONS PRELAB QUESTIONS NAME When chromium metal is added to copper sulfate, there are two possible reactions: (a) Cr + CuSO4 CrSO4 Cu (b) 2Cr 3CuSO4 Cr2(SO4)3 3Cu 1. THEORETICAL RATIOS, GIVEN BY EQUATION What is the ratio of moles Cr to moles Cu shown in equation (a)? Express this ratio as a fraction, moles Cr divided by moles Cu. Do the division and express the number to three significant figures. What is the ratio of moles Cr to moles Cu shown in equation (b)? Express this ratio as a fraction, moles Cr divided by moles Cu. Do the division and express the number to three significant figures. 2. EXPERIMENTAL RATIO 1.50 g of chromium is added to a solution of CuSO4. 2.75 g of Cu were formed. Calculate moles of chromium. Calculate moles of copper. Divide moles Cr by moles Cu, expressing the ratio to three significant figures. SHOW ALL WORK. Compare to part 1. Which reaction occurred, (a) or (b)? 63

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

-PRESERVATIVES- hi please help me with this problem need it until 11:21 am thank you. JUST MAKE IT SHORT AT LEAST 2-4 SENTENCES PLEASE DONT MAKE IT LONG THANK YOU! How does sugar preserve food materials? Is it a better preservative than salt? Why or why not?
ncreasing the pressure will __________ the solubility of a gas in a liquid. decrease increase have no effec
Use the following ABG Normal Values for the following question. HCO3 = 22 to 26 mEq/L PaCO₂ - 35 to 45 mm Hg PaO₂80 to 100 mmHg SaO, = 95% to 100% Clinical Case Problem: A 60-year-old Male Resuscitated in the Cardiac Care Unit A 60-year-old male, admitted to the Cardiac Care Unit for chest pain, suddenly becomes unresponsive in cardiac arrest. He is resuscitated after a 20-minute code. His ABG values on 100% O₂ are pH, 7.28; PaO2, 211; SaO2, 100%; PaCO2, 35; and HCO3, 14 mEq/L. Which process is disturbing the acid-base balance? O metabolic alkalosis O respiratory acidosis none of the choices is correct. O respiratory alkalosis metabolic acidosis
10 Which liquid in the beaker would cause a high reading on the voltmeter? 2. Voltmeter 1.5 O Pure vwater O Weak acid Weak base Strong base
Amoxil is an antiblotic used to treat infections of the ear, nošė, and throat. It is sold as a suspension in water. ot to a. What is the weight/volume percent concentration in a suspension of Amoxil that contains 50 mg/mL? b. If the typical pediatric dose is 25 mg/kg per day, what volume of drug is given for a 15-kg child?
L Moving to another question will save this response. Question 18 Which is not an important property of water? a. Solvency b. Adhesion c. Cohesion d. All of the above are important A Moving to another question will save this response. 15,213 FEB 25 Question 18 of 40> 2.5 points Question 18 of 40 tv Save Answer C A ssa
ipboard Font Paragraph Styles Aspirin Yield Lab NAME: 6. How much aspirin is needed for Part B #1? PRE-LAB 1. What is an antipyretic? REPORT: 2. What is an analgesic? A. Preparation of Aspirin DAY 1 3. What is the "active ingredient" in aspirin? Why is it not ingested directly? 1. Mass of salicylic acid (g) 2. Mass of filter paper (g) 4. In this experiment, 2.00 g of salicylic acid reacts with an excess amount of acetic anhydride. Calculate the theoretical yield of acetylsalicylic acid for this synthesis. 3. Mass of dried filter paper plus sample (g) 4. Theoretical yield of aspirin (g) 5. Experimental (actual) yield of aspirin (g) 5. A0.331 g sample of aspirin prepared in the laboratory was dissolved in 95% ethanol and titrated to a phenolphthalein endpoint with 16.7 ml of 0.107 M NAOH. 7. Volume of water used in the experiment 8. Mass of aspirin dissolved in the experiment (see A7 a. Calculate the moles of acetylsalicylic acid in the aspirin sample. 6. Experimental yield, corrected…
Hello can you please help me answer this?
If an epinephrine injection contains 120 mg in each 15 ml to be administered as 10 mg, how many milliliters should be withdrawn? O a. 1.25 ml O b. 1.25 L O c. 8 ml O d. 3.2 ml
help me
A doctor has ordered for a week 0.35 grams of Carvedilol for a patient with high blood pressure. If your stock on hand consists of 25 mg tablets, how many tablets will you need for 1 day's treatment for the patient? QUESTION 13 O a. 2 O b. 14 O C. 7 O d. 20 O e. 1 QUESTION 14
What would step 1 and 2 be?