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.

Q: A medical doctor gives the order to administer dopamine at a rate of 3.0 mcg/kg⋅min (mcg is the…

A:

Q: A student measures the mass of a piece of aluminum, and finds it to be 8.945 g. She finds that the…

A:

Q: A sample is found to contain 8.47×10-6 g of salt. Express this quantity in nanograms.

A: Given that Mass of sample (salt) = 8.47 × 10-6 g Mass of sample  = ? ng

Q: The concentration of mercury in a polluted lake is 0.33 micrograms per liter of water. What is the…

A: Given,Volume of the lake = 1.5 x 1012cm30.33 micrograms per liter of water

Q: what is the density of the salt in g/mL?

A: Density = mass ÷ volume    Rule for significant figure in division:- Round off final answer as per…

Q: In a laboratory, you determine that the density of a certain solid is 5.23 x 10 ° kg/mm. Convert…

A:

Q: A chemist prepares a solution of sodium chloride (NaCl) by weighing out 2.346 g of sodium chloride…

A: Concentration (w/V) = wt of solute in gram /volume of solution in Litre (V ltr)

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: Given : Mass of water in swimming pool = 8.45 X 104 gallons  Mass percent of chlorine = 6.00 %  And…

Q: A piece of metal that is a cube with sides of 1.66 cm has a mass of 69.000 g.  Calculate the density…

A: TO calculate the density of the metal, first of all we determine the volume of the metal cube.

Q: A sample is found to contain 9.75×109 g of salt. Express this quantity in milligrams.

A:

Q: A homogeneous mixture was prepared by mixing 0.90 g A, 105.7 g B and 48.17 g C. The volume is found…

A: Given, Volume of mixture = 56.6 cm3 Mass of A = 0.90 g Mass of B = 105 .7 g Mass of C = 48.17 g

Q: 3. The method of volume displacement can be used to find the volume of a solid. In this measurement,…

A: Given : Mass of silver = 194.3 g Initial volume of water = 242.0 mL Final volume of water (after…

Q: To measure the blood Ca2+ concentration of a patient’s sample, 5.00 mL of blood was diluted to a…

A: To solve this question we have to careful about units and how many times successive dilution was…

Q: convert 336.75 m/s^2 to miles per hour

A: 1 m/s2  = 2.237 miles/hour

Q: The volume of water in large scale reservoirs is often measured in units of an acre-foot, which is…

A: 1 acre-foot = 43,560 ft³ 1 US liquid gallon = 231 cubic inches 1 US liquid gallon = 3.785 liters 1…

Q: föllówing data was collected from a solution that was prepared to allow a sample of plastic to…

A: The mass v/s density data curve given is,

Q: the density of mercury, the only metal to exist as a liquid at room temperature, is 13.6 g/cm^3.…

A: The density of mercury is given as 13.6 g/cm3 and it is required to convert this in pounds per cubic…

Q: what mass (in g) of solid lead would displace exactly 234.6 liters of water? The density of the lead…

A: Given : density of lead = 11.4 g/cm3                                                 Volume of water…

Q: mass of the necklace

A: This is simply a question of density. As we know that by using concept of density, we can calculate…

Q: Convert the following 3.0 x 10^-12 g/cm^3 = ng/m^3

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: An nickel ore weighing 85.245 g was placed in a flask having a volume of 45.25 mL. The flask with…

A: Given the weight of ore is 85.245 g and was placed having a volume of 45.25 m L. Total mass of the…

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: The values are given as follows:

Q: Determine the density (in g/cm3) of a metal alloy (a mix of metals) that has a mass of 56.68g and…

A:

Q: In 1993 the Minnesota Department of Health set a health risk limit for BCME in groundwater of 2.00…

A:

Q: Suppose that, from measurements in a microscope, you determine that a certain layer of graphene…

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: A certain person had a brain that weighed 1.35 kg and contained 2.65 x 10¹0 cells. Assuming that…

A: The length of one side of the cell can be calculated from the volume of one cell.To determine volume…

Q: A swimming pool measures 45.0 meters by 30.0 meters. How many grams of water are needed to fill the…

A: The density of water is = 1.00 g/mL The dimension of the pool is = 45.0 m × 30.0 m × 7.20 feet The…

Q: A sample of an unknown ore weighing 1.275 kg is found. When the sample is placed into a large…

A: Given that : Mass of the sample = 1.275 kg = 1275 g When the sample is placed into a large graduated…

Q: Magnesium is used in alloys, in batteries, and in the manufacturing of chemicals. It is obtained…

A:

Q: 3. When a piece of metal weighing 108 g is submerged in water the volume changes from 36.9 mL to…

A: Answer of the 1st question is explained below, hope you like it. Ans: Density of the metal is 8.78…

Q: Convert 7.2 qt to μL. Be sure your answer has the correct number of significant figures. Note:…

A: Quart (qt): It is a unit of volume commonly used in the United States for measuring liquids. It is…

Q: The concentration of carbon monoxide (CO), a common air pollutant, is found in a room to be 5.7 x…

A: The volume of the room is calculated as following,

Q: The standard definition of a quart is equal to 947 mL. Calculate the percent error of a student's…

A: Given  Actual value of quart=947 mL The measured value of quart=938 mL Percent error has to be…

Q: A chemistry student needs 90.0g of carbon tetrachloride for an experiment. The density of carbon…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.