Please kindly help me to answer these questions, Thank you very much! Sulfuric acid is also known as battery acid with a Molecular Formula H2SO4 and Molar Mass of 98 grams/mole and a density of 2.07 g/mL. Compute/answer the following concentrations if you place 30 grams of H2SO4 in 120 grams of water. 1.1. ppt (using percent by weight) 1.2 ppm (using percent by weight) 1.2 ppb (using percent by weight)

Please kindly help me to answer these questions, Thank you very much! Sulfuric acid is also known as battery acid with a Molecular Formula H2SO4 and Molar Mass of 98 grams/mole and a density of 2.07 g/mL. Compute/answer the following concentrations if you place 30 grams of H2SO4 in 120 grams of water. 1.1. ppt (using percent by weight) 1.2 ppm (using percent by weight) 1.2 ppb (using percent by weight)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter3: Chemical Reactions

Section: Chapter Questions

Problem 87QRT: You need 300. mL of 0.500-M K2Cr2O7. Which method is best to prepare this solution? Explain your...

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You need 300. mL of 0.500-M K2Cr2O7. Which method is best to prepare this solution? Explain your choice. (a) Dilute 250. mL of 0.600-M K2Cr2O7 to 300. mL. (b) Add 50.0 mL water to 250. mL of 0.250-M K2Cr2O7. (c) Dilute 125 mL of 1.00-M K2Cr2O7 to 300. mL. (d) Add 30.0 mL of 1.50-M K2Cr2O7 to 270. mL of water.
A. FERMENTATION OF CANE SUGAR1. In a 500 mL Florence flask, place 50 gms of brown cane sugar and 1 gram ofdisodium phosphate.2. Dissolve 1 teaspoon of yeast in 15 mL of water. Add this to the sugar in the flasktogether with 150 mL water. Stir until the sugar is dissolved.3. Close the flask with a rubber stopper provided with a delivery tube so that theevolved gas will bubble through a solution of clear limewater.4. HAVE THE SET – UP CHECKED BY YOUR INSTRUCTOR.5. Keep the set – up inside the locker for 5 – 6 days at room temperature.Fermentation Set – up: ________________________________Write the equation for the hydrolysis of cane sugar _____________________________Write the equation for the fermentation of the simple sugars to alcohol __________6. At the end of the fermentation period, what is formed in the flask containinglimewater? _________________________________________________________________Write the equation for its formation ____________________________________________ C.…
1. A 0.68 gram sample of a volatile liquid was heated to 358 K. The gas occupied 265 mL of space at a pressure of 0.95 atm. What is the molecular weight of this gas? PV = nRT and R = 0.082 atmL/moleK. (Make sure that all your units agree/match R)2. An aspirin sample, 0.62 grams, was titrated with 28 mL of 0.105 M NaOH solution. What is the percent purity of this aspirin sample? (MM of Aspirin = 180. g/mol)3. A sample of hydrate was heated thoroughly. How many waters of hydration are there if the anhydrous salt had a dry mass of 12 grams and a molar mass of 185 g/mol? The mass of water evaporated from the hydrate was 5.0 g.4.A sample of water (80 grams) had a temperature change of 6. ℃. What was the heat change of this sample? (q = m c ΔT, c = 4.18 J/ g ℃)5. A 6.0 gram sample of epsom salt, MgSO4 ·nH2O, was heated. After heating, 2.9 grams of anhydrous salt remained. How many waters of hydration does epsom salt contain?6. What is the theoretical yield of aspirin if you started your…
6-ROX is a dye with a molecular weight of 631.67 g/mol. A student prepares a stock solution by dissolving 0.275 grams of 6-ROX in 500.0 ml of solvent. The student then prepares a working solution by taking 10.00 ml of the stock solution and diluting it to a final volume of 250.0 ml. Calculate the final concentration of the dye in the working solution in moles per liter. Answer = ______ moles/liter Large and small numbers may be entered in calculator notation: 2.30×10–5 can be entered as 2.30E–5
Convert the experimental glucose concentration (provided in the table below) from mM (millimolar) to g/100 mL. Drink # Glucose Concentration in mM 1 2.340 mM 2 0.288 mM 3 3.500 mM 4 0.136 mM 5 1.673 mM Hints & Tips Take the 1/100 dilution factor into consideration Molarity will open the doors for you to get to grams. Once at M assume 1L of solution. (Hint: this will help you when converting from M to moles) You will also need to calculate the molar mass of glucose which has the formula C6H12O6 There are 5 steps in total!!! Task 1: Write a step-by-step guide with key words for the Chem 2 students on how to do these calculations. You can use diagrams, a table or just type the steps out. Ensure the steps are clearly written and easy to follow.
General Chemistry Please answer all and show complete solutions. Thank you 1. What is the % volume of a 100.0 mL solution that contains 3.50 mL acetic acid? 2. Rubbing alcohol, C3H7OH, is sold as a 70.0 % v/v solution for external use only. What volume of pure C3H7OH is present in a 500.0 mL bottle? 3.What volume of a 0.25 mol/L salt solution in the kitchen contains 5.8 g of sodium chloride? 4. How many grams of sugar monosaccharide, C6H12O6, should be present in 450 g water to make a 8.75 m sugar solution? 5. What is the mole fraction of solute in a solution that has 3.50 g sucrose (MM = 342) and 100 g water (MM = 18)? 6. How many grams of sugar must be added to 1000 g water to make it boil at 102.0 degrees celsius? 7. How many grams of sugar must be added to 1000 g water to make it freeze at -2.000 degrees celsius? 8. What is the molar mass of a 500.0 g solute which then dissolved in 500.0 g water results in a solution that boils at 105.5 degrees celsius?
1) How much total glucose is present in a 75 Kg female person? (a normal person (70 kg BW) has approximately 43L body fluid).2) Please express the normal salt (NaCl) concentration in body fluid into molarity (mM).3) Commercial fuming Sulphuric acid (Oleum-H2S2O6) is 99.9% solution. Please convert it into molarity.4) Find out the Volume (dm3) of product (gas) at RTP when 0.58 M, 150 mL NaOH (aq.) reacts with 350 mL, 0.25 NH4Cl.5) The above reaction has the product Ammonia, which when dissolved in 650 mL ethanol makes an alkaline ethanolic solution. Find its molarity (M).6) Calculate the adult dose as per the BW of the baby. (Child dose-50 mg and the BW of the baby is 48 lb (British pound) (1lb=0.453 Kg)
Convert the experimental glucose concentration (provided in the table below) from mM (millimolar) to g/100 mL. Take the 1/100 dilution factor into consideration Molarity will open the doors for you to get to grams. Once at M assume 1L of solution. (Hint: this will help you when converting from M to moles) You will also need to calculate the molar mass of glucose which has the formula C6H12O6 There are 5 steps in total Write a step-by-step guide with key words for the Chem 2 students on how to do these calculations. You can use diagrams, a table or just type the steps out. Ensure the steps are clearly written and easy to follow. Drink # Glucose Concentration in mM 1 2.340 mM 2 0.288 mM 3 3.500 mM 4 0.136 mM 5 1.673 mM
How would you make .500 L of .0056 M solution of HCl, how would you instruct me to make it? Make sure to include the volume and type of flask. Group of answer choices Measure 0.1 grams of HCl into a 500 mL Volumetric flask and fill to volume with water. Measure 0.0056 M of HCL and mix with 0.500 L of water. weight 0.0028 grams HCL into 500 mL flask and fill to volume Measure 500 mL of water and add 0.1 grams to it and mix well.
What volume of 3.00 M CH3NH2 solution is needed to provide 0.370 mol of CH3NH2?Group of answer choices 0.901 mL 1110 mL 123 mL
A 50X stock of Bradford reagent would have to be diluted to a 1X working solution prior to use. How much of the stock reagent solution and water are required to achieve this dilution? The final volume of the diluted solution is 1000 mL. Give your answers as whole numbers only (no decimal places). For example, if you think it would take 500 mL of reagent and 500 mL of water to make this dilution, then enter 500 and 500 in the appropriate spaces below. Volume of Bradford reagent required (in mL): Blank 1. Fill in the blank, read surrounding text. Volume of water required (in mL)
7a) Calculate the number of grams of hydrogen peroxide contained in 25.0 mL of a 3.60 M solution. 7b) What mass of a 30% (w/w) hydrogen peroxide solution is required to provide the mass calculated in question 7a? A w/w solution means g solute/100 g solution. Hint: You need to use your previous answer to 3 sig figs to get this answer to 3 sig figs. Your answer should have 3 sig figs.