If the Mn of a batch of LDPE is 3.2x109 g/mol, what is the corresponding full contour length in Angstroms and in millimeters? How might the practical length differ between this batch of LDPE and a batch of HDPE with the same Mn? Explain and support your answer.

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: 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: It takes 27 microliters of solution to produce a spot with a 1.2 cm diameter. If the Cu(NO3 )2…

A: This is an example of paper chromatography. Given, It takes 27 microliters of solution to produce a…

Q: A sample of gold alloy has a mass of 9.3 kg. It is determined that 0.6 kg of the alloy is actually…

A: Answer:Mass percent of a substance can be calculated as:

Q: In 1993 the Minnesota Department of Health set a health risk limit for n-butanol in groundwater of…

A:

Q: A student has a mixture of two liquids. Liquid A boils at 112°C and Liquid B boils at 145°C. In…

A: Liquids having different boiling points on heating vapourizes. The produced vapours when subjected…

Q: If 16.1 grams of an unknown metal occupy 4.66 cm^3, how many grams of the metal will occupy 11.3…

A: We are given the mass metal in grams(g) and volume in cm3 or mL.  We can find the density of the…

Q: What is the volume and thickness of the aluminum foil given 0.405g (mass), 9.5 (length), 9.6…

A: Given:   The mass of aluminum foil is 0.405 g. The length of aluminum foil is 9.5 cm. The width of…

Q: What is the percent abundance (in units of percent) of zinc in a sample whose density is 7.639 g/mL…

A: The explanation is given below-

Q: what is the answer with appropriate significant figures? (184.04∗183.)/(163.55+83.25−59.798)

A: Interpretation: The answer with appropriate significant figures of the given expression is to be…

Q: PART A: A solution of cough syrup contains 5.00% active ingredient by volume. If the total volume of…

A: Total volume of bottle = 74.0 mL active ingredients = 5.00%  So, mL of active ingredients = 74 x…

Q: What is the area in cm² of a sheet of paper that is 8.50 in x 11.0 in?

A:

Q: In chemistry, angstrom (Å) is a commonly used unit, and 1 Å = 10-¹0 m. Another commonly used unit is…

A: Given,1 Å = 1010 m1 nm = 109 m

Q: I am told that when determining the number of significant figures, if the decimal place is absent,…

A: Rules for Determination of Significant Figures:[i] All non-zero digits are significant.For example:…

Q: What is the volume (in units of m^3) and density (in units of g/mL) of a 325g rectangular block of…

A:

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: How do you "Express the decimal equivalent of a simple whole number ratio"?  For example, "In CuCl ,…

A: While determining empirical formula, to find the simplest whole number ratio, divide the number of…

Q: The mass unit associated with density is usually grams. If the volume (in mL or cm) is multiplied by…

A: Volume and density of marshmallow are given whose mass is to be determined in grams.

Q: A chemist prepares a solution of sodium hyposulfate (Na₂S₂O3) by measuring out 256. μmol of sodium…

A: Check the formula for calculation of the concentration and then use it to calculate the molarity of…

Q: A molecular biologist measures the mass of cofactor A in an average yeast cell. The mass is  56.54…

A: The given mass=56.54g Number of cells = 105 cells

Q: How do you fint the volume of an element, given the density and mass.  For example, "Determine the…

A: The volume of an element can be calculated from the given below formula if its density and mass are…

Q: A molecular biologist measures the mass of cofactor A in an average yeast cell. The mass is 64.22…

A: Metric conversion factors are used to convert the units of numbers.  Some of the factors that can be…

Q: A student measured the mass of an empty micropicnometer to be 2.000g. A student places 0.500mL of…

A: Part(a): Given that the mass of micropicnometer = 2.000 g Mass of micropicnometer + citric acid =…

Q: How many picograms are in 4.28 x 10^-11g?

A: 1 picogram = 10-12 grams

Q: Suppose the absorbance of a 0.084 M solution of nickel(II) nitrate in water is measured to be 0.305…

A: The question pertains to the application of the Beer-Lambert Law, a fundamental principle in…

Q: Calculate the length (in m) of a rectangular solid that weighs 95.5 g and  has a width of 2.50 cm…

A:

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: When a body is immersed in a fluid, it displaces the fluid. Then calculate, --------- (1)

Q: How do I solve this problem using dimensional analysis? Copper can be drawn into thin wires. How…

A: Copper is malleable and ductile metal which can easily change to wires and sheets. This is because…

Q: The shattered glass case at the scene of a jewelry store robbery was determined to be made of potash…

A: Density of glass fragment = mass of glass fragmentvolume of glass fragment…

Q: The Neelanjali Ruby is one of the largest rubies in the world, with a mass of 1370.0 carats ( ).…

A: Answer:Here:

Q: A meter of polyaramide fiber has a diameter of 450.μm , a mass of 0.198g , and takes 0.25s to…

A: One unit of polyaramide fiber = 1 meter long, diameter is 450 μm mass of 1 unit fiber = m = 0.198…

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.