Suppose that, from measurements in a microscope, you determine that a certain bacterium covers an area of 1.50 μm^2. Convert this to square meters.   Express your answer in square meters.

Q: Describe whether the following are physical or chemical properties. Explain your answer in no more…

A: To determine whether the below process is chemical or physical. Alcohol tends to disappear faster…

Q: The distance between the centers of two oxygen atoms in an oxygen molecule is 1.21 x 10- cm What is…

A: The relation between cm and nm is - 1 cm = 1 x 107 nm

Q: Suppose that a liquid is 10 times denser than water. Part A If you were to sip this liquid at sea…

A: GivenThe atmospheric pressure= 1atmg = 9.8m/s2d2= 10d1d1= 1g/cc

Q: A chemistry student weighs out 0.0977 g of acetic acid (HCH,CO,) into a 250. mL volumetric flask and…

A:

Q: Given that 6.02 x 1023 ethanol molecules have a mass of 46.04 g, calculate the number of ethanol…

A: At first, we calculate the volume of the film of ethanol, which is----- 3.08 mm = 0.308 cm 10 cm =…

Q: The average distance between the Earth and the Moon is 240,000 miles. Express this distance in…

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

Q: 1.) Which macroscopic characteristics differentiate solids, liquids, and gases? (List as many as…

A: Hi there, as there are multiple questions posted. We are answering the first question. If you need…

Q: How many of the following should be included in a good hypothesis? (i) A prediction of the…

A: A hypothesis is defined as the prior assumption of statement base d on the limited data as a…

Q: 1.30μm^2. Convert this to square meters.

A:

Q: Classify each description as a hypothesis, theory, or law.-An untested explanation based upon…

A: Hypothesis is a guess or tentative explanation that has to be tested and investigated further. A…

Q: The distance between the centers of two oxygen atoms in an oxygen molecule is 1.21 x 10 cm . What is…

A:

Q: A chemistry student weighs out 0.120 g of lactic acid (HCH,O,) into a 250. mL volumetric flask and…

A:

Q: The following items are part of either the macroscopic domain, the microscopic domain, or the…

A: Symbolic domain includes special language, symbols, graphs, drawing, formulas used to represent…

Q: The total weight of copper in a vehicle ranges from 15 kilos for a small car to 28 kilos for a…

A: The weight will affect the car acceleration and deacceleration which tells that how better a car can…

Q: A length of 155 nm can also be expressed as 1.55 x 104 pm 155000 pm O 0.155 pm 1.55 x 10-6 pm

A: 1 nm = 10-9 m 1 um = 10-6 m

Q: The average radius of a molecule of lysozyme, an enzyme in tears, is 1.430 nm. What is its radius in…

A:

Q: A sample of an ethanol-water solution has a volume of 54.4 cm^3 and a mass of 49.9 g. What is the…

A: The mass of ethanol is - Mass = density×volume Mass = 0.789×54.4 Mass = 42.9216 gram   Then, total…

Q: Ultrapure silicon is used to make solid-state devices, such as computer chips.  If the volume of a…

A:

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

A:

Q: Describe the difference between accuracy and precision. How do we determine accuracy and precision?

A: Accuracy is the measure of closer agreement between true value or accepted value and  specific…

Q: A stack of paper has a volume of 187 cube inches Now all the sheets are laid out on the floor,…

A: Given: Volume of a stack of paper = 187 cubic inches Area covered by paper       = 46,750 square…

Q: 2. If the standard range of Magnesium in the body is 0.70 to 0.95 mmol/L, convert this value into…

A: A certain amount of univalent ions provides the same number of equivalents.  While the same amount…

Q: A 25.00 grams sample of a metal is placed carefully in a graduated cylinder, and then benzene is…

A: Given : mass of metal = 25.00 g Mass of metal + benzene = 60.85 g Volume of metal + benzene = 50.00…

Q: A chemistry student weighs out 0.178 g of acrylic acid (HCH,CHCO,) into a 250. mL volumetric flask…

A:

Q: In the area of nano-chemistry, particles defined as nanoparticles range in size from 1-2500 nm.  1…

A:

Q: An empty Erlenmeyer flask weighs 235.6 g. When filled with water (d = 1.00 g/cm3), the flask and its…

A: Given, Mass of flask = 235.6 g Mass of flask + water = 571.3 g Density of water = 1.00 g/cm3

Q: To determine the density of a solution, the mass and volume of two samples are measured. The results…

A: Given: density 1 = mass / volume = 9.88 / 10.1 = 0.978 g/mL density 2 = mass / volume = 9.97 /…

Q: One molecule of the spherically shaped, oxygen-carrying protein in red blood cells, hemoglobin, has…

A: Given: Diameter of the oxygen carrying cells = 5.5nm To Find: Diameter of the cell in meter Formula:…

Q: Express the answer to the following calculations in proper number of significant figures. 154.29)…

A:

Q: 2. You purchase a rectangular piece of metal that has  dimensions 5.0 X 15.0 X 30.0 mm and mass…

A: A numerical problem based on measurement, which is to be accomplished.

Q: The contents of one 90. lb bag of topsoil will cover 10. square feet of ground to a depth of 1.7 in.…

A: Given : 1 bag of topsoil will cover area = 10 ft2  And the depth covered by 1 topsoil cover = 1.7 in…

Q: Determine the mass (in kg) of a gold block with the dimensions of 2.75 in x 5.69 in x 5.16 in.

A: Length  = 2.75 in =  2.75×2.54 cm= 6.985 cmBreadth  =5.69in=5.69  ×2.54 cm=14.4526 cmHeight  = 5.16…

Q: The distance between two atoms was determined to be 11.4 nm. What is this distance in centimetres?…

A: we know 1 nm = 1.0 * 10-9 m and 1 m = 100 cm => 1 nm = 1.0 * 10-9 m * (100 cm / 1 m) = 1.0 * 10-7…

Q: In microbiology, dilutions are critical for getting a countable number of microbes to grow on a…

A: Initially, the volume of solution to be taken having colonies of 50×106 (M1) is 1 mL (V1). The final…

Q: If an electric car is capable of going 225 km on a singlecharge, how many charges will it need to…

A: Since 1 km = 0.621 miles The charges as the trip begin with a full charge is calculated as Since 1…

Q: How can you differentiate between natural and engineered nanoparticles in the environment?

A: The nanoparticles which occur in nature are called Natural Nano particles. These are generally found…

Q: The density of mineral oil is 0.834 g/mL. What is the mass in kg of the mineral oil in a cubic…

A: Given that: density of oil = 0.834 g/mL side of a cube = 11 inches. To find: The mass in Kg of…

Q: A sample of tap water contains 1.95 x 103 ppm CaCO3(aq). Assuming the density of tap water is…

A:

Q: Describe whether the following are physical or chemical properties. Explain your answer in no more…

A: Introduction: We have to tell whether the following are physical or chemical properties.

Q: How many picograms are there in one gram? Enter your answer in scientific notation. For example,…

A: Given Find out 1g =       pg

Q: 8. The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10-8 cm.…

A: Given, Distance between the centres of two oxygen atom in an oxygen molecule (d)= 1.21 × 10-8 cm…

Q: As stated in the text, convincing examples that demonstrate the law of conservation of matter…

A: Given scenarios,    (a) Exactly one pound of bread dough is placed in a baking tin. The dough is…

Q: the unit of land measure in the english system is the acre, while that in the metric system is the…

A: We have to calculate the area in hectares.

Q: What is the significance of determining density and specific gravity in pharmacy practice? Support…

A: Density is the compactness of the substance. Higher density makes the substance heavier for the…

Q: Gold can be hammered into extremely thin sheets called gold leaf. A 200-mg piece of gold (density =…

A: Given that: Mass of the gold piece = 200 mg The density of gold = 19.32 g/cm3 Measurement of the…

Q: please highlight the correct answer

A: The molarity relation is given by- M1: bacteria count cell per mL V1: Initial Volume M2: bacteria…

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.