Write out at least 5 relevant conversion factors as fractions that you'll need to convert need to convert units of gallons to units of hours. Assume that a milliliter of water contains 22 drops and you can count drops at a rate of 10 drops per second.

Perform the following conversions. You must use dimensional analysis and put your answer in scientific notation with correct units and significant figures. a) 65.2 mL to uL (Hint: you must go through the base/metric unit) 4 points b) 65.1 miles/hour to m/s 7 points Please only utilize the conversions provided. If calculations use conversions not provided, your answers will not be graded). c) 35.6 cm2 to km² (You must go through the base/metric unit) 5 points (Please write your answer on a piece of paper. No need to type anything here). Edit View Insert Format Tools Table 12pt v Paragraph v BIU O words I| Proctorio is sharing your screen. Stop sharing Hide

A student uses a 100.00 mL volumetric flask to determine the density of a sample of water.  The mass of the dry empty flask is determined to be 80.354 g.  The flask is filled to the line 5 times with the water sample and the mass of the flask and the water is determined each time giving the 5 masses below.  measurement 1:  172.275 g measurement 2: 172.288 g measurement 3: 172.28 g measurement 4: 172.263 g measurement 5: 172.378 g Based on the data given above, what is the average density of the sample in g/mL based on those measurements?  Enter your answer with 3 significant figures.

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if oil is placed in a large body of water, such as a lake or ocean it spreads out to form a surface monolayer one molecule thick. 0.10mL of oil will spread out over a roughly 40 square meters area. Given 1 L= 1000mL= 0.001 m^3. Volume = area x height. Given this information, calculate the average diameter of an oil molecule in nanometers. 1 nanometer= 10^-9 meters.

The sugar industry uses barium hydroxide solution to refine sugar beets. What is the amount concentration of a barium hydroxide solution when 5.43 g is dissolved in 165 mL of water?   Record your numerical answer with the correct number of significant digits in the first answer box and your units in the second answer box.

On average, water flows over a particular water fall at a rate of 2.03 x 105 cubic feet per second. One cubic foot of water weighs 62.4 Ib. Calculate the rate of water flow in tons of water per day. (1 ton = 2200 lb) tons/day

Since density depends on the mass and volume of an object, we need both of these values combined in the correct way to solve for density. Keep in mind that we may not be given the mass and volume directly, or the values may not be given in the units we want and we need to convert to the correct units before solving for density. When converting between metric units, use the prefixes to help you determine the magnitude of a value. The prefix k indicates kilo, 1000. Therefore 1000 g = 1 kg. A 17.0 kg iron weightlifting plate has a volume of 2160 cm³ . What is the density of the iron plate in g/cm³? Express your answer in grams per cubic centimeter to three significant figures. • View Available Hint(s) Hνα ΑΣφ ? density of iron plate = g/cm3

A student is asked to make up a 16% sodium chloride solution. She makes the solution by weighing an empty beaker (which has a mass of 98.5g). Sodium chloride is added to the beaker. The mass of the beaker and sodium chloride is 114.71 g. Lastly, the student added 84 mL of distilled water to the beaker. Reweighing the beaker she finds that the mass of the beaker, sodium chloride, ad distilled water is 196.14 g. What is the weight percentage of sodium chloride in this solution? Show all work.