Measured values are written to the correct number of significant figures O to match the significant figures used by your instructor. O to demonstrate the precision of the measurement. O to keep numbers smaller and easier to work with. O for no particular reason.

Q: Explain why measurements are never exact.

A: The act of the measuring the size of an object is known as measurement. It is numerical…

Q: A small beaker was found to have a mass of 27.847 g. A 10.00 mL sample of an unknown liquidwas…

A: Answer :- 1.225 (g.mL-1)  Density of unknown liquid (solution) = 1.225 g.mL-1…

Q: A flask containing 11.7 mL of a liquid weighs 132.8 g with the liquid in the flask and 124.1 g when…

A: Density = mass of liquid (gm) / volume of liquid.(ml)   ….(1) Volume of liquid = 11.7 ml     …….(2)…

Q: The agreement between the tested values is known as O A. Precision OB. Certainty OC. Significant…

A: The correct ans is option (E) Accuracy.

Q: Significant figures are the indication of what? Why? Give an example too. (Please explain it shortly…

A: Significant Figures⇒Significant figures express or indicatesthe precision of a measureingtool used…

Q: The density of lead is 11.35 g/mL. What is the volume of 85 g of lead? Show set-up in dimensional…

A: Density is one of the physical property of the matter.  It gives the relation between mass with the…

Q: Express each number in decimal notation (i.e., express thenumber without using scientific…

A: Since you have posted questions with multiple subparts, we will solve the first three sub-parts for…

Q: Significant figures are the indication of what? Why? (Please explain it shortly and easy to…

A: Accuracy measures the closeness between the calculated and observed value. Precision measures how…

Q: A substance has a known density of 7.81 g/mL. A large piece of it is measured, and the volume is…

A: Here we use the formula   d = m/v.  Where d= density, m= mass,…

Q: My Data: 0.033 g/mL Class Data: 0.02904 g/mL 0.0256 g/mL Based on my results (0.033 g/mL), is the…

A: Measurements are taken repeatedly to confirm the value obtained and to ensure that findings are of…

Q: Decide whether each proposed multiplication or division of measurements is possible. If it is…

A:

Q: d) The number of u e) The ml values al f) The number of u g) The total numbe

A: n =principal quantum Number l = angular quantum Number l = 0 s orbital l= 1 p orbital  l= 2 F…

Q: The weight of a rock is measured to be 0.097 lbs. After placing the rock in a graduated cylinder…

A: Weight of rock = 0.097 lbs Volume of water = 19.92 mL Volume with rock = 33.21 mL Density = ?

Q: What is the estimated digit? A measurement done with no tools A digit added by the operator beyond…

A: in a measurement, the last digit is called an estimated digit.

Q: When you see this number: 5.00, using these figures to be deducted with 2.25. In seeing again the…

A: Significant figures Precision of a calculation is determined by writing a number in a positional…

Q: What is the density in kilograms per cubic meter?

A: Given :- density of lead is 11.4 g/cm3  To calculate :- density of lead in kg/m3

Q: e ruler is in centimeters (cm). Record the length of the rod below taking into count any uncertainty…

A: Centimeter is unit of measuring length. Meter, decimeter and millimeter are other units of length.

Q: Rewrite this measurement with a simpler unit, if possible. kg-m 1.0 2 2 m m Note: If you can…

A: In order to simplify the given unit, we have to cancel the common units present in both the…

Q: The radius of a sphere was measured to be 8.4825 mm. Its volume (V r) to the correct number of…

A:

Q: Celeste's diet restricts her intake of protein to 24 g per day.1lb=16ozIf she eats 0.60 oz of…

A: Diet restriction = 24 g protein per dayConsumed protein = 0.60 ozWe have, 1 lb = 0.16 ozSo, consumed…

Q: Conversions: include the correct number of significant digits and follow the format provided in the…

A: Given that , We have to convert 1.2 gram to micrograms  & 10.0 cm to inches.

Q: Rewrite this measurement with a simpler unit, if possible. g* mL·g 1.3 2 g*-mL•mL•s Note: If you can…

A: We have to simplify given measurement by striking off the like terms

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: Aim :- We have two missing parts the resultant number and the conversion factor that is used. We…

Q: How would you determine the density of an irregular object? A) d = m/v, so measure the mass of the…

A: Density (d) :-  The ratio of mass of an object to its volume is called as density of that object.…

Q: Decide whether each proposed multiplication or division of measurements is possible. If it is…

A: ->Multiplication and division of different units are possible. ->Addition and substraction of…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A:

Q: Rewrite this measurement with a simpler unit, if possible. kg m 8.0 S'S Note: If you can simplify…

A: Answer: In this question, first of all we have to write the units in concise form and then have to…

Q: Provide the result of (6.5721 × 2.7850) - 9.438 using significant figures properly.

A: Interpretation: The result of 6.5721 × 2.7850 - 9.438 using significant figures is to be provided.

Q: Rewrite this measurement with a simpler unit, if possible. g cm 6.5 3. cm Note: If you can simplify…

A:

Q: Solve the following, round to the correct number of the significant figures and chose the correct…

A: Rule-  1. Count the number of decimal places of all the number. 2. You answer should contain not…

Q: 1) The mass of an empty graduated cylinder is 70 grams. When it is filled with 50 ml of liquid it's…

A: Mass of empty cylinder = 70 g  volume of liquid = 50mL  Mass of cylinder + mass of liquid = 120g…

Q: A block of aluminum has a mass of 675.27 g and a volume of 250. mL. Calculate the density of the…

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

Q: You decide that it is too tedious to kneel or adjust your eye level when trying to read the volume…

A: Random error causes one measurement  to differ slightly from the next. it comes from unpredictable…

Q: 2.66 Perform each calculation to the correct number of significant figures. a) ( b) (569.99- 233.1)…

A: Significant figures are any non zero digit.

Q: I dont quite understand the significant figures. Need some examples

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

Q: Question is attached

A: Measurement: It is the process of assigning the numbers to the characteristic of any substance that…

Q: (a) How many significant figures should be reported for thevolume of the metal bar shown here? (b)…

A: The volume of the metal bar is calculated as shown below. The volume of the cube is 16.56 cm3 which…

Q: 15. An object has a mass of exactly 5 g on an analytical balance that has an 'accuraey of 0.1 m many…

A: The degree of accuracy of the measurement can be calculated by using significant figures. In any…

Q: Two undefined numbers expressed in regular notationare s hown below, along with the number of places…

A: Scientific Notation: In science when the number is too large or too small to perform any…

Q: Attached question

A: Density: It is the mass of the substance present for unit volume. The SI unit for density is g/cm3.…

Q: When a measuring scale is used properly to the limit of precision, the least significant digit…

A: Note - There is a word error in your question, i.e., least should be replaced by last. Taking it…

Q: An irregular shaped piece of lead metal is found to weigh 73.4g. It is placed in a graduat ylinder…

A:

Q: Non-zero digits in a measurement are Always significant O Never significant O Significant only if…

A: Given statement is , Non zero digits in measurement are ....

Q: alüminum atom has a mass of 4.48 × 10 g and a small airplane has a mass of 5000. kg. e this…

A: We are given mass of one atom and we have to find mass of one mole and calculate how many moles can…

Q: Make the following conversions. Report answer to the proper number of significant figures. 1.25 in…

A: Following is the conversion of 1.25 inch to feet

Q: When a measuring scale is properly to the limit of precision, the last significant digit recorded…

A: There is no a perfect machine.However,for very precise equipment,the margin is a very small number.…

Q: When you see this number: 4 000 --- or four thousand, how do we mathematically and scientifically…

A: Significant figures or numbers are defined as the number of meaningful digits in a measured…

Q: The agreement between the tested values is known as O A. Precision B. Certainty OC. Significant…

A: Given: Agreement between the tested values.  To find: what is this agreement between the tested…

Q: A sample that has a mass of about 25 g is weighed on a balance that has a precisionof 0.001 g. How…

A: The mass of sample with a precision of 0.001 g is in between 24.999 g and 25.001 g

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.