Problem PageQuestion A chemist prepares a solution of calcium sulfate (CaSO4) by measuring out 4.21mg of calcium sulfate into a 50.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's calcium sulfate solution. Round your answer to 2 significant digits. mol/L

Problem PageQuestion A chemist prepares a solution of calcium sulfate (CaSO4) by measuring out 4.21mg of calcium sulfate into a 50.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's calcium sulfate solution. Round your answer to 2 significant digits. mol/L

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter1: Matter, Energy, And Measurement

Section1.5: What Is A Handy Way To Convert From One Unit To Another?

Problem 1.5P: Problem 1-5 An intensive care patient is receiving an antibiotic IV at the rate of 50. mL/h. The IV...

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Problem Specialized cells in the stomach release HCl to aid digestion. If they release too much, the excess can be neutralized with an antacid. A common antacid contains magnesium hydroxide, which reacts with the acid to form water and magnesium chloride solution. As a government chemist testing commercial antacids, you use 0.10 M HCl to simulate the acid concentration in the stomach. How many liters of “stomach acid” reactwith a tablet containing 0.10 g of magnesium hydroxide?Plan We are given the mass (0.10 g) of magnesium hydroxide, Mg(OH)2, that reacts with the acid. We also know the acid concentration (0.10 M) and must find the acid volume. After writing the balanced equation, we convert the mass (g) of Mg(OH)2 to amount (mol) and use the molar ratio to find the amount (mol) of HCl that reacts with it. Then, we use the molarity of HCl to find the volume (L) that contains this amount (see the road map).
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5. Do the problems below. Find the volume of 3.0 x 1025 molecules of Neon gas at STP. You have 36.0 grams of Iron. How many moles of iron do you have. Calculate the number of molecules in 17.0 liters of oxygen gas at STP. Jim has 300 grams of sulfur dioxide. How many moles of oxygen are in Jim's sulfur dioxide. Billy has 5.6 x 1024 molecules of Helium gas to fill balloons at a ballgame. If each ballon holds 1.5 liters, how many balloons can he fill, Assume STP.
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Problem 1-5 An intensive care patient is receiving an antibiotic IV at the rate of 50. mL/h. The IV solution contains 1.5 g of the antibiotic in 1000. mL. Calculate the mg/mm of the drip. Check your answer to see if it is reasonable.