When a measuring scale is used properly to the limit of precision, the least significant digit recorded for the measurement is said to be uncertain. Explain?

Q: convert 9284 meters to miles using dimensional analysis.

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Q: One important observation that supporters of the phlogiston theory had trouble explaining was that…

A: Lavoisier, a French chemist, conducted an experiment in which he decomposed the mercury calx into…

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: 5. The following are three different scales. Determine the correct reading indicated by the arrow.…

A: Accuracy is the term used for the measurements taken near to the original value. Precision is the…

Q: Finally, sometimes the desired value does not directly match the units given but is derived from the…

A: Given: The volume of a sheet of metal = 45.5 cm3 Width = 14.8 cm Length = 15.9 cm

Q: 56. Round the number on the left to the number of significant figures indicated by the example in…

A: Significant figures of a number are those which are absolutely necessary to explain the numbers…

Q: In the lab a student measured the density of an Aluminum cylinder to be 2.89 g/cm3. The handbook…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: Measure the diameter of the circle using Ruler A and Ruler B.Given that the actual diameter of the…

A: Given : Ruler A and Ruler B and some statements are given .  To find : To match the statements…

Q: Which of the following is more precision and which is more accurate and why? 5.31589…

A: Precision tells us about the closeness of the given value. Precision can be observed relatively by…

Q: Is it possible for measured data to be precise but inaccurate?

A: Here we have to explainIs it possible for measured data to be precise but inaccurate-

Q: liquid density acetone 0.79 g em pentane 0.63 g em dimethyl sulfoxide 1.1 g-em chloroform 1.5 gem…

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Q: It isn't always best to use the instrument with the highest precision. For example, instruments of…

A: Given: High precision instruments and low precision instruments and some situations ard given  To…

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

A: Given -- >  (-1.8 x 105 kg.m/s )  We know that , 1kg = 1000 g  1 m = 100 cm

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: The question is not asking for signifcant figures, it's asking for the estimated digit of each…

A: Estimate digit is basically the digit that comes at the last.

Q: 2300 + 146.11 significant figures express your answer with the appropriate number of sig figs

A: A significant figure is defined as the digit which denotes the least number of digits that can be…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A:

Q: What is the standard practice for significant digits when recording test data? Why are significant…

A: 1. Most standards for science and technology, led by ASTM E29, use the “five-even” rule. Under this…

Q: A student measures the length of an object and obtains 3.65 cm. If the true value (as reported by…

A: Answer:- This question is answered by using the simple concept of calculation of percent error using…

Q: When comparing two data sets, how do you determine which among the two is more precise using…

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Q: he? stands for a number the student is going to calculate.) in the missing part of this equation.…

A: In this question we need to identify the relationship between the two units and then we will…

Q: A brick of metal has these dimensions: 9.59 in x 6.09 in x 5.79 in. It has mass 11.7 kg. What is the…

A:

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: How do the sources of error affect precision and accuracy.

A: The sources of error affect precision and accuracy have to be given below.

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: The following four measurements were made for an objectwhose true mass is 4.56 g.4.55 g, 4.56 g,…

A: The given values of the measurement are 4.55 g, 4.56 g, 4.56 g, and 4.57 g. The true value of the…

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

A: Convert the following measurement:54 cm3 = ? m3

Q: [(284.1 x 105) - (1.300 × 10³)] × 2.8988 Express your answer to the appropriate number of…

A: The equation given is, => [(284.1 X 105 ) - (1.300 X 103)] X 2.8988

Q: Express the following measurement to 5 significant figures: 872311 mm. (Type numerical values only;…

A: The given measurement is 872311 mm. Number of significant figures are 6 i.e. 8,7,2,3,1,1. For…

Q: 555mm^3(Cubed) to cm^3(Cubed)

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Q: MEASUREMENT AND MATTER Counting significant digits when measurements are multiplied o... Multiply or…

A: The given problem is based on the concept of significant figures.

Q: Give an example from which the difference of Accuracy and Precision is described and explain why it…

A: Accuracy is the degree of closeness of measurements to the true value or reference value Precision…

Q: Distinguish between the terms accuracy and precision.In general, explain why a precise measurement…

A: To find: Difference between the terms accuracy and precision. Explanation for why a precise…

Q: It is necessary to take into account the proper number of significant figures when taking a…

A: True. more precise the measuring instrument we get more precise and accurate measurements.

Q: What would be the difference in precision and accuracy if I chose to use a graduated cylinder…

A: Solution Beakers, chemist flasks, dropping funnels and therefore the like aren't volumetrical…

Q: A student estimated that the volume of a crucible was 28.6 mL. When the volume was accurately…

A: percentage error is given by  % error = (experimental value - actual value ) X 100 / actual value.

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: A beaker contains water up to the 130 mL mark. We introduce an object 38 g of dough and we observe…

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Q: 6. A bicycle has a 56 cm frame. What is this frame size equal to in inches? (1.00 in = 2.54 cm. Note…

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Q: A student determines the density of a liquid by determining the mass of an empty graduated cylinder,…

A: (a) Determine mass of the liquid:

Q: Subtraction - express all answers in the correct significant figures - be sure to include units…

A: Significant Figures -  They indicate the reliability of a number that tells us how many digits are…

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.