A human hair has diameter of 51um (micrometers).  Determine the diameter in dm (decimeters).

Q: 11.4 cmcm long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of…

A:

Q: Solve the following problem and express the answer in scientific notation with the appropriate…

A: Multiplication of significant figures :-  The answer of multiplication must have the same number of…

Q: the distance between the oxygen atom and a hydrogen atom in a water molecule is 95.7 pm what is the…

A: conversion from one unit to another unit is an important aspect of measurement

Q: An electric current of 13.10 A transports 23.0 C of charge. Calculate the time this took. Be sure…

A:

Q: How many nanometers are in 1.33 centimeters? Note: 1 meter = 100 centimeters and 1 meter = 1a 10° nm

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Q: (2.97 x 10^2)x(6.09 x 10^-7)

A: In multiplication, round the answer to the least number of significant figures.

Q: a small sheet of aluminum metal (?=2.70 g/cm3). The sheet had a mass of 1.3648 g, a length of 2.05…

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Q: A penny has a mass of 2.49 g and a volume 3 of 0.349 cm3. Determine its density in g / cm3.

A: The density of a substance is defined as a mass of a unit volume of the substance. The density of a…

Q: The weight of a rock is measured to be 0.072 lbs. After placing the rock in a graduated cylinder…

A: * Mass of a rock = 0.072 lbs ( lbs = 453.592 g ) = 32.65 g * Initial volume of graduated cylinder =…

Q: Mass (g) Height (cm) Diameter (cm) Cylinder A 15.560 5.11 1.20 Cylinder B 35.536 5.90 1.30 In…

A: Volume can be calculated using the following equation.

Q: TV waves travel at the speed of light (“c”), roughly 3.00 x 108 m/s. How long does it take for a Tv…

A: Given: Speed of TV wave=Speed of light (“c”)= 3.00 x 108 m/s. Distance between the edge of our solar…

Q: What is the volume in liters of 5.085 pounds of gold? The density of gold is 1.93 g/cm^3. Express in…

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Q: How many inches is 87.3cm? You know that 1in = 2.54cm

A: The given length is = 87.3 cm We know that: 1 in = 2.54 cm

Q: Convert 8.49 x 10-3 m to the equivalent length in nanometers. 8.49 × 10-3 m = nm

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Q: how many micrometers are in 1.00 kilometers?

A: It is required to calculate how many micrometers (µm) are there in 1 km.

Q: A sample of gold weighs 1.2 oz. The sample is pounded into a thin rectangular sheet with an area of…

A: Mass of a substance has many units like gram, kilogram, oz etc. These units can be converted from…

Q: A cylindrical glass tube 20.0 cm in length is filled with acetone. The mass of the acetone to fill…

A:

Q: The radius of a helium atom is 31 pm. What is the radius in nanometers? (pico = 10-12; nano = 10-9

A: This question can be solved easily via dimensional analysis.

Q: An experiment requires 3.5lb of ethylene glycol, a liquid with a density of 1.114g/mL. Rather than…

A:

Q: The density of gasoline is 721 kilograms per cubic meter. What is its specific gravity

A: Specific gravity is also known as relative density. It is defined as the density of the material to…

Q: The density of Solid A is 2.70 g/cm3 and that of Solid B is 3.87 g/cm3 . If 1.00 g of each solid is…

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Q: general chemistry student found a chunk of metal in the basement of a friend's house. To figure out…

A: Density = mass/volumeVolume of substance = volume of water displaced by substance

Q: The sides of a certain rectangular wood block were measured 0.1294 meters, 7.41 centimeters and 9.4…

A: The volume of a given substance is defined as the amount of the space occupied by the substance that…

Q: Carry out the following conversions. Report your answers to the correct number of significant…

A: (G)• convert 31.8 Pounds to Grams :-To convert 31.8 Pounds to Grams you have to multiply 31.8 by…

Q: A popular car has an engine that is reported to have a volume of 4320 cm^3 what is the size in cubic…

A: The volume of car engine has to be converted from cubic centimetres to cubic inches

Q: A scale on a map shows that 1 mm = 25 m. The distance from Minneapolis to Bloomington is 225 mm on…

A: Given:1 mm on map indicates = 25 mThe distance from Minneapolis to Bloomington is = 225 mm on the…

Q: . Do the following calculations and use the correct number of significant figures in your answers.…

A: For addition and subtraction use the following rules of significant figures: 1) Count the number of…

Q: A 15.0cm long cylindrical tube, sealed at one end is filled with ethanol. The mass of the ethanol…

A: Given information, Height of cylindrical tube (l) = 15.0 cm Mass of ethanol (m) = 9.64 g Density of…

Q: The proton has a radius of approximately 1.0x10^-13 cm and a mass of 1.7x10^-24 g. Determine the…

A: The ratio of the mass of a substance to the volume of the substance is defined as density. It is…

Q: Eic current of 25.10 A transports 790. μµC of charge. Calculate the time this took. your answer has…

A: Charge (q) = current (i) × time (t)

Q: The diameter of an atom is approximately 1 x 10-10m. What is the diameter in millimeters? (Hint,…

A: Atom is the unit of matter. If atom considers to be spherical, diameter is a straight line that…

Q: Suppose you are asked to find the area of a rectangle that is 2.1-cm wide by 5.6-cm long. Your…

A: Here we have to calculate the answer to two significant figures.

Q: A sample containing 20.30 g of metal pellets is poured into a graduated cylinder initially…

A: The density (D) of the metal is obtained as the ratio of the mass (m) to its volume (V) as follows:…

Q: First she measured the mass of the metal to be 172.9 grams. Then she dropped the metal into a…

A:

Q: An unknown liquid was found to have density of 69.22 lb/ft^3. The density of ethylene glycol (the…

A: Given information:Density of unknown liquid = 69.22 lb/ft3Density of ethylene glycol = 1.1088 g/mL

Q: Iron has a density of 7.86 g/cm37.86 g/cm3 (1 cm3=1 mL1 cm3=1 mL). Calculate the volume (in dLdL) of…

A: Given data set: Density of Iron = 7.86 g/cm^3 Mass of Iron piece = 4.32 kg We need to calculate the…

Q: A sample containing 12.98 g of metal pellets is poured into a graduated cylinder initially…

A: Mass metal pellet = M = 12.98 g Initial volume of water in graduated cylinder = V1 = 14.0 ml Final…

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.