Complete the following table. Be sure each of your answer entries has the correct number of significant digits. food cal energy content when eaten 5 a cup of cooked green peas 1.25 10 three ounces of cooked sirloin steak a 12-ounce soft drink kcal 240. ☐ x10 kJ Х П ☐ П 628.
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- 1. A student weighs an empty special round bottom flask and stopper. He finds the mass to be 56.972 g. He then adds about 5 mL of an unknown liquid and heats the flask in a boiling water bath at 100°C. He allows all the liquid to vaporized and then removes the flask from the bath, stoppers it, and lets it cool. Upon cooling, he briefly removes the stopper, then replaces it and weighs the flask and condensed vapor, obtaining a mass of 57.917 g. The volume of the flask is known to be 240.2 mL. The barometric pressure in the laboratory that day is 743 mm Hg. What was the pressure of the vapor in the flask in atm? O 0.9776 atm 0.98 atm 0.978 atm 0.977 atmThe solubility of BaSO, in water at 25 °C is measured to be 0.0023 Use this information to calculate Ke, for BaS04. L sp Round your answer to 2 significant digits. |x10Estimate up to 2 decimal points
- Do not give handwriting solution.Suppose some measurements are made on two different homogeneous stones to find out if they are made of the same kind of rock. The mass and volume measurements are listed below. Are the two stones the same type of rock? Why or why not? Show all calculations. Mass Volume Calculations Stone 1 58.0 g 20.0 cm Stone 2 50.1 g 15.0 cm3 21/common/assets/pdfjs/1.0.0.30/web/viewer.ht...ndered-pdf&fullscreen=Dd21-fileviewer-rendered-pdf-dialog&height=746#0Estimate up to 2 decimal places
- A certain liquid X has a normal boiling point of 146.10°C and a boiling point elevation constant =Kb1.88·°C·kgmol−1. A solution is prepared by dissolving some urea (CH4N2O) in 400.g of X. This solution boils at 149.5°C. Calculate the mass of CH4N2O that was dissolved. Round your answer to 2 significant digits. = ___gA chemist prepares a solution of mercury(I) chloride Hg2Cl2 by measuring out 0.000957μmol of mercury(I) chloride into a 250.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in /molL of the chemist's mercury(I) chloride solution. Round your answer to 3 significant digits.Dashboard My Home OWLV2 | Online teaching and learning resource from Cengag [References) A student gently drops an object weighing 15.7 g into an open vessel that is full of ethanol, so that a volume of ethanol spills out equal to the volume of the object. The experimenter now finds that the vessel and its contents weigh 10.6 g more than the vessel full of ethanol only. The density of ethanol is 0.789 g/cm°. What is the density of the object? Density = g/cm³ Submit Answer Try Another Version 10 item attempts remaining
- An aspirin tablet has a mass of 9820.0 mg. Report the mass of the tablet in: • grams: kilograms: micrograms: • centigrams: مه g kg x 106 με cg Only input numbers. Your answers must be expressed to the correct number of significant figures. Any values less than one must have a zero in front of the decimal (e.g. 0.01 not .01).A chemistry student needs 80.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of dimethyl sulfoxide is 1.10 g.cm -3 Calculate the volume of dimethyl sulfoxide the student should pour out. Round your answer to 3 significant digits. Ar mL x10 Continue Submit Assignment O 2021 McGraw Hill LLC. AlIl Rights Reserved. Terms of Use | Privacy Center Accessibility MacBook Air 80 000 000 DI DD F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 C@ # % %24A chemist adds 800.0 mL of a 50.0 g/dL calcium bromide (CaBr,) solution to a flask. Calculate the mass in kilograms of calcium bromide the chemist has added to the flask. Be sure your answer has the correct number of significant digits. O kg