The are the markings on an instrument that represent the highest accuracy that the instrument can measure.

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: Perform the calculation and record the answer with the correct number of significant figures.…

A: Rules for determining the significant figures are as follows: A) When doing addition or subtraction…

Q: x2 4. (0.432)x(0.928)3 1.45 x 10-5 X-?

A:

Q: Can a set of data be accurate but not precise?

A: Yes, to some extent. This direction is more involved. Let’s use the example of direction (1) but…

Q: 532 mi/s2 to cm/hr2

A:

Q: Round 329.2258 to 2 significant digits

A: Significant figures are meaningful digits which are known with certainty. There are certain rules…

Q: 0.009 hm %3D cm 1.0023 dm = hm 0.2203 daL = µL %3D 515 cm = km

A:

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: 7501400 Red Violet 430 Blue 480

A: Radiation emitted by complex irradiates radiation complementary to wavelength of light absorbed by…

Q: 1. What are the basic units of length, mass, volume, and temperature in the SI system?

A:

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

A: For multiplication and division use the following rule: The LEAST number of significant figures in…

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: Express 3.78 m³ in units of cm³.

A:

Q: the true density of methanol is 0.792 g/mL based on the answer 0.762 what is the percent error of…

A: Given— True density = 0.792 g/ ml Measured density = 0.762 g/ml

Q: 320.12−(6108.4/3.5) Express your answer to the appropriate number of significant digits.

A: Rules for significant digitsDigits from 1 to 9 are always significant. Zeros between two other…

Q: What is the meaning of the number of digits reported in a measured quantity?

A:

Q: show calculation setups and answers for the following problem:  A metal sample weighs 56.8 g. How…

A: The given sample weight in grams is first converted into lb shown as below,

Q: (C) (D) 8.44 x 10 5.63 x 1014 (E) 6.94 x 10 20 amber has afready vour PSU ID number (you dont

A:

Q: 836.2 MHz (common frequency used for cell phone communication) Express your answer in joules using…

A:

Q: Enter all measured data, and certain final answers to the correct number of significant figures as…

A: In this question, the values of the following are given with the correct number of significant…

Q: Arrange the measurements from longest length to shortest length.

A: 1 km > 1000 inch > 10 yard > 250 cm Explanation All the values are at first converted into…

Q: write UNCERTAINTY IN MEASUREMENT

A: Uncertainty as used here means the range of possible values within which the true value of the…

Q: On what is the Celsius scale based?

A: The basis on Celsius scale is used has to be given.

Q: Water has a known density of 0.997 g/mL at room temperature. Calculate the percent error in the…

A:

Q: C,H,0 2738 2820 1703 4000 3000 2000 1000

A: IR spectroscopy is an important tool for the determination of the functional group in the compound.…

Q: Round the answer to the correct number of significant figures. (27.52÷3.29) + 5.7=14.065

A: Introduction: significant figures in a reported value is the number of digits that are known with…

Q: Explain the difference between precision and accuracy.

A: The standard unit of measurement is easy to understand by everyone as it gives the measurement ease…

Q: 1.04km to cm

A: We have to convert 1.04 Km to cm.  First, we have to convert 1.04 Km to meter(m) and then meter(m)…

Q: The theoretical density of metal is 2.70g/ cm cube. The experimental density a student found in the…

A: We have to calculate the percentage error.

Q: Can a set of data be accurate but not precise? Please explain why

A: Precision can either be the number of decimal places to which you are sure, or the consistency of…

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: While doing a lab, a student found the density of a g/cm. The accepted value for the density of…

A: According to the question,  Measured density of pure aluminum = 2.85g/cm3 Accepted value for the…

Q: 86 g CCl4 Express your answer using two significant figures. ΑΣφ %3D

A: Consider the given information is as follows; Mass of CCl4 = 86 g Number of molecules = ?       We…

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: Compare the objects and masses from Part III. Which measurement included the highest percent of…

A:

Q: Why do we use quotation marks around the word true in the statement that accuracy refers to how…

A:

Q: What is the ln of 1/time of the time is 449.7 seconds?

A: Given,t=  449.7 seconds

Q: A student measures the dimensions of a metal block to be 2.0 cm in length, 1.0 cm in width, and 0.75…

A: a) Given : mass of metal = 7.56 g And dimensions of metal block = 2.0 cm in length, 1.0 cm in width,…

Q: 7.64x1020 H2O2 molecules Express your answer using three significant figures. m =

A: Since  1) Find the number of moles present in each of the given substance. 2) Multiply the number…

Q: What are the basic four units of measurements?

A: These are the following basic units:

Q: Determine the answer to the following calculation with correct number of significant figures:…

A: According to the rule for significant digits in addition and subtraction, the number of significant…

Q: 865×[1259−(3.98×106)]. Express your answer to the appropriate number of significant digits.

A: In this, first subtraction has to be done.  The values given in the brackets is multiplied and then…

Q: The are the markings on an instrument that represent the highest accuracy that the instrument can…

A: Precision is the representation of how close are the two or more measurements to each other,…

Q: What value of a measurement must be available if the accuracy of a measurement is to be determined

A: The physical dimensions of a substance are calculated by observing and taking down the measurements.…

Q: Determine the number of significant figures. 1. 3.4 / 0.025356 + 236.00 - 76.357  2. 5.6786 +…

A: Significant figures are the figures that are necessary to indicate quantity of something.

Q: Given

A:

Q: What is the fraction used to determine the uncertainty in a measurement?

A: For determining the uncertainty in measurement in terms of fraction  we will consider an example…

Q: 1.23 x 106 Greatest 5.67 x 10² 4.56 × 10³ The correct ranking cannot be determined. 2.34 x 105 3.45…

A: This question belong to number and digits. I have solved this question by expansion. Expansion of…

Photochemistry

Photochemistry is the part of chemistry that studies the various mechanisms of reactions that are triggered by the presence of light energy. It also helps to study the changes involved in a molecule that can undergo the absorption of radiation.