Perform the following arithmetic operations and report the result to the proper number of significant figures: (a) 317.5 mL + 0.675 mL,(b) 47.80 L − 2.075 L, (c) 13.5 g ÷ 45.18 L, (d) 6.25 cm × 1.175 cm, (e) 5.46 × 102 g + 4.991 × 103g.

Q: The population density of worms in a particular field is 34 worms per cubic meter of soil. How many…

A: The volume of soil is calculated as,

Q: You are assigned the task of separating a desired granular material, with a density of 3.26 g/cm°,…

A: Given: The density of desired granular material = 3.26g/cm3 The density of undesired granular…

Q: 4. The density of a proton is approximately 4.0 x 1014 g/cm°. If the mass of the proton is 1.7 x…

A:

Q: When the calculation (1.0453x10-1.4) x 1.604 is carried out, the number of significant figures in…

A:

Q: The average radius of a molecule of lysozyme, an enzyme intears, is 1430 pm. What is its radius in…

A: Length can be measured in different units such as meter, kilometer, picometer, centimeter, nanometer…

Q: Near room temperature, the density of ethanol can be expressed using the equation 3(-8,99 × 107g m…

A: Given the relation between density (d) and Temperature (T): d = (-8.99 × 10-4 g ml-1 K-1)T + (1.051…

Q: What is the speed of light in miles per second? Express your answer in scientific notation. The…

A: Given: The speed of light in m/s is 299,792,458 m/ s.

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

A:

Q: High-density lipoprotein (HDL) is a type of cholesterol, sometimes called “good cholesterol,” that…

A: Density is given by the ratio of the mass of the substance to that of the volume.

Q: A student performs an experiment to determine the density of a sugar solution. She obtains the…

A: A data is said to be precise if experimental values are close to each other.  A data is said to be…

Q: The following procedure was used to determine thevolume of a flask. The flask was weighed dry and…

A: Density of the flask is equal to the mass of substance divided by its volume. Write the expression…

Q: A student measured the length and mass measurements of a cube using the same equipment as in the…

A: Density=MassVolume

Q: A jet airplane reaches 768. km/h on a certain flight. How long does it take to cover 323. m? Set the…

A:

Q: 1. Perform the following calculations and give the answer rounded to the correct number of…

A:

Q: perform the following calculation, reporting your answer to the correct number of significant…

A: Rules for significant figure All non zero integer are significant Exact number have unlimited…

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

A:

Q: a thin sheet of lead measures 15.5 cm by 23.0 cm and weighs 0.627 g. if the density of lead is 11.34…

A: Given information is as follows: Length of the lead sheet = 15.5 cm Width of the lead sheet = 23.0…

Q: What is the volume in cm3 of 1.8 cubic feet?

A: volume in cm3 of 1.8 cubic feet?

Q: perform the following calculation, reporting your answer to the correct number of significant…

A: Significant figures of a number are  necessary to indicate the quantity of something. It is also…

Q: There are exactly 60 seconds in a minute, exactly 60 minutes in an hour, exactly 24 hours in a mean…

A: 60 smin ×60 min1 hour ×24 hour1 day ×365,24,daysolar year  =31556736 s/solar year

Q: The surface area of the earth is approximately (1.92x10^8) square miles. What is this area in square…

A: we know that,  1 square mile = 2.59  square km

Q: The output of a plant is 4335 pounds of ball bearings per work-week (a work week = five days). If…

A: Given: Mass of each ball bearing = 0.0113 g Total mass of ball bearings formed in 5 days = 4335…

Q: What is the volume of a box in cm3 if its dimensions are 9 inches x 7.7 inches x 10.1 inches?

A: Given: The dimensions of the box are 9 inches x 7.7 inches x 10.1 inches

Q: THe density of aluminium is 2.7 g/cm3. what is the mass, in grams, of a piece of aluminium foil that…

A: Given, density of aluminium is 2.7 g/cm3

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

A:

Q: Calculate the volume (I x w x H ) of this cube to the correct number of digits. Block of wood Height…

A: Length of the cube = 1.2 cm Width of the cube  = 1 cm Height of the cube  = 1 cm

Q: How do I know the number of significant figures if the decimal notation is 8,725 km and the scientic…

A:

Q: The average radius of a molecule of lysozyme, an enzyme in tears, is 1430. pm. What is its radius in…

A: Length can be measured in different units such as meter, kilometer, picometer, centimeter, nanometer…

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: The average speed of the International Space Station as it orbits the earth is 7710 m/s.  What is…

A: Distance can be measured in different units such as meters , centimeters , kilometers , miles  Some…

Q: Given the density of Au is 19.3 g/cm3, determine the mass of gold in an ingot with the dimensions of…

A:

Q: Carry out the following operations and express the answer with the appropriate number of significant…

A: For multiplication and division: Check the LEAST number of significant figures. For addition and…

Q: Bacteria vary somewhat in size, but a diameter of 2.0 micrometers is not unusual. What would the…

A: Given, Diameter of the bacteria d = 2.0 μm Radius r = d/2 = 2.0/2 = 1.0 μm The shape is assumed to…

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: I think I did a calculation wrong but I am having trouble understanding significant figures. In…

A: Significant figures: These are the digits of a number that are useful in terms of accuracy and…

Q: A student is given the following question: "What is the mass of a gold bar that is 7.379 × 10–4 m3…

A: We know,Mass = Density x Volume

Q: The radius of a copper (Cu) atom is roughly 1.3 × 10−10 m. How many times can you divide evenly a…

A: The radius is given as, 1.3 x 10-10 m. The diameter will be 2.6 x 10-10 m. Length of copper piece =…

Q: If a sample of clay has a density of 1.7 g/cm3 and it takes up a volume of 0.43 cm3, what is its…

A:

Q: How many cubic feet are there in a room measuring 6m x 10m x 3m?

A: Cubic feet is calculated by measuring the height,width and length.

Q: Suppose you are trying to find the volume of a box based on the given measurements for the length,…

A: given l = 2.20 in   w =3.11 in  h = 10.4 in +1 in

Q: The speed of light is 2.998x10^8 m/s. How long does it take light to travel 40.cm? Set the math up.…

A: Given that,    Speed of light, s = 2.998×108 m/s   Distance travel by light, l = 40.0 cm  Time taken…

Q: he volume occupied by the egg whites from four “large” eggs is 112 mL. The mass of the egg whites…

A: Given : volume of 4 egg whites = 112 mL And mass of 4 egg whites = 120 g

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: What is the speed of light in miles per hour? Express your answer in scientific notation. The speed…

A: The speed of light = 299,792,458 m/ s

Q: Suppose you are trying to find the volume of a box based on the given measurements for the length,…

A: Length of the box,l  = 2.20 in Width of the box, b= 3.91 in Height of the box , h = 10.4 in + 1 in…

Q: 2.8 x 4.5039 =? what is the result of the operation expressed in significant numbers?

A: Since we know that according to the product rule , the least number of significant figures are…

Q: Calculate the volume of a book with the following dimensions: length = 28.3 cm, width = 22.2 cm,…

A: Volume of the book can be calculated by using the formula given below as; Volume = Length × Width ×…

Q: Ariel was wondering how much water there was in the sea.  If the total amount of water in the sea is…

A: Given, Volume of water = 3.73 × 108 km3

Q: The SI units of density are kg/m³ but g/cm³ is more commonly used. How many g/cm³ are in 1 kg/m³?

A: Density is the ratio of the mass of the substance with that of the volume occupied by the substance.…

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.