How can you tell what numbers are exact, and which are measured? For example, one mile, one meter, one kilometer?

Q: A sheet of aluminum measures 48.5 cm by 29.5 cm. If the volume is 2.90 cm³ what is the thickness of…

A:

Q: Use significant figures to express the inherent uncertainty in measured quantities and in…

A: The uncertainty in a measurement is an estimate of the amount by which the measurement result may…

Q: State the rules governing the use of significant figures in Adding/subtracting measurements.  How…

A: Significant figures are the digits having a meaning in a given number. The number of decimal places…

Q: The density of gasoline is 0.774 g/cm3. How much does 1.50 gallons of gasoline weigh, in kilograms?

A:

Q: Mass of Empty Beaker: 44.653 g Mass of Beaker and Metal sample: 124.411 g Initial volume of water…

A:

Q: If you report two measurements of mass, 7.42 g and 7.56 g, are the measurements accurate? Are they…

A: If the average values of different measurements are close to correct value, the measurement is…

Q: 1)2347 mm to miles 2)70 nL in to Gallons 3)21367 dg to Mg? 4)1345 dm in to Km? 5) 780 ounces in to…

A:

Q: The unit of weight used for precious stones is the carat (1 carat=200 mg ,exactly).If a particular…

A: Conversion of carat into mg: 1 carat=200 mg1.25 carat=1.25×200=250 mg Conversion of mg into g: 1…

Q: a laboratory apparatus that measures volume between 0.1 to 1.5 ml?

A: A long thin apparatus used to measure the volume between 0.1 to 1.5 mL accurately. This apparatus is…

Q: A student uses a stoppered 25.0-mL volumetric flask to determine the density of a liquid. The mass…

A: As our Website policy we can solve only one question per post. Hence, please post question number 4…

Q: A thin sheet of nickel measured 5.00 cm by 7.00 cm was found to weigh 0.350 g. If the density of…

A: Given : Mass of Nickel sheet = 0.350 g Length of sheet = 5.00 cm  Width of sheet = 7.00 cm

Q: A beaker is marked with 1mL lines for measuring volume. It is then filled with water such that the…

A: When we fill a container with a liquid, it generally forms a lower and an upper meniscus. The…

Q: Lead has a density of 11.34 g/mL. Oxygen has a density of 1.31 x 10 g/mL. 17,18) What volume, in mL,…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Differentiate between Precision and Accuracy?

A: Solution :    Accuracy and precision play a very important role in determining the measurement of an…

Q: 4)1345 dm in to Km? 5) 780 ounces in to Kg?

A:

Q: An imperial fathom is exactly 6 feet in length. How many imperial fathoms are there in 1.000…

A: Given that, 1 meter =3.2808 feet An imperial fathom=6 feet It is known that, 1 kilometer= 1000 meter

Q: An object weighs exactly five grams on an analytical balance that has an accuracy of 0.1 mg. To how…

A: The weight to be measured is 5g Accuracy = 0.1g

Q: A chemist has a block of gold metal (density is 19.3 g/mL). They drop the metal into a graduated…

A: Given data, Density = 19.3 g/mL Volume = 1.90 mL To calculate the mass in grams.

Q: A metal cube weighs 1.285 kg. The length of a side is 1.97 inches. What is the density in g/cm3?

A:

Q: A long ton is defined as exactly 2240 lb. If a shipment weighs 12.565 tons how much does it weigh in…

A: Unit conversions. 1 long ton = 2240 lb 1 lb = 0.4536 kg   1 long ton = 2240×0.4536 kg = 1016.06 kg

Q: Iron has a density of 7.874 g/cm^3.What is the mass of a rectangular block of iron with dimensions…

A: Density of a substance is given by the ratio of mass of the substance to its volume. Density =…

Q: What type of quantity (for example, length, volume, density)do the following units indicate? (a) mL,…

A: Conversion factors are used to convert different units into each other through dimensional analysis…

Q: A graduated cylinder contains 10.00 mL water. A 14.74 g piece of aluminum is added to the water, and…

A: Given : Initial volume of water (before adding aluminium piece) = 10.00 mL Final volume of water…

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: What is the mass, in grams, of 150 mL of liquid iron if its density is 7.874 g/cm3? Make sure to…

A: The density of a substance is equivalent to the mass of the substance per unit of its volume.

Q: total voulme in graduated cylinder is 1.00ml total numbers of drops placed in cylinder is 24 what…

A: Volume of cylinder =1ml  No of drops in 1ml cylinder is =24  24 drops occupy volume =1ml  1drop…

Q: How many inches is 57.2 inches? You know that 1 in=2.54 cm.

A: Given information, 1 in = 2.54 cm 57.2 in = ?

Q: In the former British monetary system, one pound consisted of four crowns, each crown was worth five…

A: One unit is converted into other by multiplicative factor .

Q: 3. Why did you classify the properties that you observed as physical, extensive, intensive, or…

A: Since you have posted multiple question, as per our company guidelines we are supposed to answer the…

Q: An object has a mass of exactly 5 g on an analytical balance that has an accuracy of 0.1 mg. To how…

A:

Q: what is the density of saltwater in units of lb/in3 ? (1 lb = 453.50) Density of saltwater is 1.19…

A: Given that Density of sea water in g/mL unit = 1.19 g/mL For conversion, 1 lb = 453.50 g => 1 g =…

Q: Gold is a very dense metal with a density of 18.3 g/cm3, what is the volume of a 0.255 kg gold…

A: Given that -  Density of Gold = 18.3 g/cm3  Mass of Gold sample = 0.255 kg  This mass in grams is =…

Q: A graduated cylinder contains 10.00 mL water. A 14.74 g piece of aluminum is added to the water, and…

A:

Q: A piece of metal ore Weights 5.00 g. When a student places it into a granduated cylinder containing…

A: Density of substance= Mass of substanceVolume of substanceGiven mass of metal ore = 5.00 g

Q: Is 0.468 meters exact, or measured?

A: Exact numbers those which are obtained after counting and are well defined. These numbers are have…

Q: An unknown metal sample weighs 18.1 g. This rubber stopper was placed in the graduated cylinder…

A:

Q: A rectangular box measures 6.00 inches in length, 7.00 inches in width, and 8.00 inches in height.…

A: Given values and their conversion to centimeter: 1 inch = 2.54 cm Length = 6.00 inches = 6.00 x 2.54…

Q: What is the area of a piece of metal foil that measures 43.9 cm by 29.21 cm? Express the answer to…

A: Since we know for a rectangular foil area = length × breadth  Here , Length = 43.9 cm…

Q: Which is the smaller volume? 514 uL or 0.584 mL? Please show calculations.

A:

Q: If a cube of gold has a length of 2.50 cm, what is the mass of the gold sample? Convert 19.3 g cm-3…

A: Given that: Length of  gold cube = 2.50 cm Density of gold = 19.3 g/cm3 Volume of cube = (length)3 =…

Q: You are given the length and width of 10.5 in by 8.5 in. Upon weighing, it comes out to be 0.885 g.…

A: Given,Dimensions are 10.5 inch by 8.5 inch.Density is 1.10g/cm3Mass is 0.885 g.Thichkness = ?

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: 1. Suppose some measurements are made on two different homogeneous stones to find out if they are…

A: Mass and volume are extensive properties which depends upon the amount of the substance and thus,…

Q: a thin sheet of nickel measured 5.00 cm by 7.00 cm was found to weigh .350 g. if the density of…

A:

Q: A beaker weighs 145.60 grams. The chemical weighs 3.467 grams. What is the total mass?

A: Given: Weight of beaker = 145.60 g Weight of chemical = 3.467 g

Q: What is the density of the liquid?

A: Density = mass ÷ volume

Q: If a tiny marble had a radius of 0.25 mm, how many marbles can be lined up across the circumference…

A: Given: Radius = 0.25 mm Circumference of earth distance = 24900 miles

Q: The conversion between inches and cm is 1 inch = 2.54 cm (exact conversion, this is a definition).…

A: Given that, 1 inch = 2.54 cm 12 inch = 1 foot To find: How many cm are in exactly 3 feet?

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.