A piece of foam has a mass of 24.3g and a volume of 7.21 x1^5 mm^3. What is the density of the foam in g/cm^3? Report answer in thousandths place
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A piece of foam has a mass of 24.3g and a volume of 7.21 x1^5 mm^3. What is the density of the foam in g/cm^3? Report answer in thousandths place
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- Procedure: Determine the correct weight of the empty graduated cylinder (measuring device). Fill up the cylinder(measuring device) with water, record the volume and weight of the cylinder with water. Do this for several trials, filling up the cylinder with water under different volumes. Using consistent units for weights and volumes corresponding to each trial, determine the trial densities as m/V in kg per cubic meter or gm per cubic centimeter. Do another exercise by using other liquid,(cooking oil) like oil, kerosene, etc. Tabulate the data and identify the liquid used. Computation: Let V = volume of liquid ( or ) = mass of empty cylinder (kg or gm) = mass of cylinder + liquid (kg or gm) m = mass of liquid (kg or gm) m = mT-me p=m/V Questions: Will there be variation in density of water if there is temperature variation? Why? _________________________ Observations: _______________________ Conclusions: _________________Sarah bought a neti pot from©. After using up the salt packets she decided to make one from scratch at home. After some Internet research she found out that for every 8 ounces (oz.) of water, she should mix in 1/4 teaspoon (tsp.) of pure non-iodized salt (sodium chlodide, NaCl). Conversion Chart: 1 oz. of water = 29.5738 mL Density of Water = 0.997 g/mL 1 tsp. of salt = 5.9985 g Answer the following: 1.) What will be the molarity (M) of the solution? 2.) What will be the molality (m) of the solution? (Use density of water to find kg of water). 3.) What is the mole fraction (X) of salt in the solution? Extra Credit: Sarah is unsure about the type of water to use (tap, bottled, or distilled). What do you recommend and why?The distance from Philadelphia to Atlanta, GA is 4.17 x 106 feet. How many minutes would it take to drive to Atlanta from Philadelphia if your average speed is 65.0 mi/hr? (1hr = 60 min; 5280 ft = 1 mile) Please type answer note write by hend
- DIMENSIONAL ANALYSIS/ FACTOR LABEL METHOD 1. How many minutes are there in a solar year? (365.24 days) 2. A 6.2-ft person weighs 175 lbs. Express this person's height in meters and weight in kg. 3. The density of ammonia gas under certain conditions is 3 0.625 g/L. Calculate its density in g/cm³ Please answer the question above.liquid (density= .5 g/mL) spills out of a cylinder vat (radius= 15 ft and depth=20 ft) at 13,500 grams/second. how long in hours will it take to fill this cylinder vat? answer in three significant figures.Quantitative analysis student Jon analyzed an ore sample for its lead content and obtained a mean of 4.75% Pb for five measurements. If the certified true value is 4.50%, what is the (a) percent error? (b) percent accuracy?
- Please answer 1-2 subunits.10. If the density of an object is 2.87 x 10-4 lbs/cubic Liter, what is its density in g/ml?7. A box measures 3.12 ft in length, 0.0455yd in width and 7.87inches in height. What is it volume in cubic centimeter?Answer is provided. All I need is the solution. Thank you! The recommended pediatric dose of epinephrine for allergic emergencies is 0.01 mg/kg. If a physician, utilizing this dose, administered 0.15 mg, what was the weight of the patient in pounds? Answer: 33 lbWhy can the length of the pin shown in Fig. 2.5 not be recorded as 2.850 cm?
- You are checking the accuracy of a volumetric flask marked 10.00 mL . To calculate the volume of water contained in the flask, you first measure the mass of the empty flask and the mass of the flask filled with water and take the difference. Then, you correct for the buoyancy factor and divide by the density of the water. The result of 8 such measurements is given in the table. Calculate the 95% confidence interval for these measurements with a mean of 10.03.How many miles Ca(MnO4)2 are represented in 89,000,000,000,000,000,000,000 formula units of Ca(MnO4)2? Show work using the dimensional analysis and units? Give numeric answerStandard deviation 0.6318 mL, 0.1216 mL, 0.1056 mL, 0.0681 mL, 0.0056 mL Mean-0.18654 mL