Which student has a more precise measurement? Justify your answer Student A:  228.3, 226.4, 226.9, 227.1, and 228.6.  Student B:  229.5, 226.1, 230.7, 223.8, and 227.5

Q: A student converts grams to milligrams by multiplying by the conversion factor 1g /1000mg. Is the…

A:

Q: A student performed an experiment to calculate the density of 10% aqueous solution of sodium…

A: • density = mass /volume

Q: graduated cylinder weighs 35.825 g. When 10 mL of water is measured in it, the weight of the…

A: Given: Weight of the graduated cylinder = 35.825 g. The weight of the graduate and water= 45.835 g…

Q: 2. Complete the blanks in each row as in the first: a) underscore the last significant figure in the…

A: Solution: We have three rules for significant figures 1.Non-zero digits are always significant. 2.…

Q: mL and Student B measures a different amount of the same liquid and reports its volume as 15.0 mL,…

A: Measuring devices used are of a standard. No matters if we use same device or not the measuring…

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: 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: A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere with an average radius…

A: First, volume of sphere with given radius 7.5x105km is determined as follows,

Q: Express each answer with the correct significant digits, and the proper units AND write it in…

A: The expression given is .

Q: tration of the insulin stock solution is 400. units/500. mL. How many units of insulin per hour is…

A: A unit of insulin is the most basic measure of insulin, U-100 is the most common concentration of…

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

A: Here we need the converion factor to convert μg/dl to g/ml

Q: 0.356=44.032.0x+88.046.0(0.220−x) This question is for chemistry. I'm not sure how to…

A: In this question, we have to solve the given equation to find the value of x.…

Q: 1. Comment on the differences in measurements obtained on the same objects using the meter stick,…

A: A question based on general chemistry that is to be accomplished.

Q: 3- Perform the following calculation and report the result to the correct number of significant…

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Q: How would I write 97,820 in standard scientific notation?

A: Scientific notations are used to express the very large or very small numbers in more convenient…

Q: What is the volume of iodine if it has a mass of 2.5kg and a density of 4.93/cm to the 3rd power?…

A: Answer of this question :-

Q: (- 10° 3 kg• m g'cm 3.6 X = ? S S

A:

Q: A student obtained a density versus percent by mass sodium chloride standard curve for the Salt in…

A: The best fit curve on the density v/s percent by mass of NaCl solution is given as, => y =…

Q: Decide which of the earlier measurements was the most accurate, and which was the most precise.

A: Accuracy determines that how close a measurement to the accepted value or true value. Precision is…

Q: Perform this calculation by first converting the numbers into scientific notation and then…

A: According to significant figures' rule, there should be no digits in the answer if we multiply one…

Q: The maximum recommended single dose for acetaminophen is 15.0mg per kilogram of body weight for…

A: Here we are required to find the maximum dose of acetaminophen for an adult .

Q: IotatioT, 1.74 Express the following measurements in scientific notation: (b) 0.000 042 1 mL (a)…

A: Scientific notation is basically a standard method gets utilized to depict any particular number as…

Q: How manny aspirin tables can be made from 100.0g of asprine, if each tablet contains 5.00 grains of…

A: Numbers of aspirin tablets that can be made from 100.0g of aspirin are to be calculated, if each…

Q: Why is it incorrect to say that the results of the measurement were accurate but not precise

A: While measuring any unit we work to meet the accuracy that means how close the measurements done to…

Q: liquid density dimethyl sulfoxide -1 1.1 g-mL tetrahydrofuran -1 0.89 g mL diethylamine -1 0.71 g-mL…

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Q: Evaluate to the appropriate number of significant figures and express in scientific notation: (4.791…

A: Given:

Q: Perform the operation and express your answer in scientific notation with the correct number of…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A small cube measures 12.8 mm on a side and weighs 6.23 grams. What is the density of the cube in…

A:

Q: 1. Consider the following sets of replicate measurements: A B 9.50 8.70 0.972 8.50 8.20 0.943 9.10…

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Q: For the following division problem: (6.626 x 10–30) / (9.63 x 107) = ? What is the answer reported…

A: When we divide  the two same numbers  having  coefficients,  like 10-2/10-4 than here we just…

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

A:

Q: 1. Given that 1 kilomoeter (km) = 0.6214 miles; calculate the following:       How many miles is 10…

A: 1 kilomoeter (km) = 0.6214 miles  as 0.6214 miles = 1 km  multiply both side by 10  so , 6.214 miles…

Q: Crude oil is sold in units of barrels, where 1 barrel=160 liter. . Assume that crude oil has a…

A: Given : Density =  823.0 kg/m³ Volume = 1barrels.

Q: Calculate the following answer and round to proper significant figures, Don't forget units. 2.22g x…

A: Calculate the answer and rounding off---

Q: For each of the following numbers, determine the number ofsignificant figures it contains, rewrite…

A: (a) 3.050 × 10–4 can be written without scientific notation as 3.050/104 =0.0003050 has four…

Q: A 25.00-g sample of a solid is placed in a graduated cylinder, and then the cylinder is filled to…

A: First, the mass of benzene is calculated by using the given grams of solid sample and the mass of…

Q: Explain why standard units of measurement are particularly important to scientists.

A: HERE ARE SOME REASONS:

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

A: Since, we know that ;  1 kg = 103 g  1 m = 102 cm

Q: 6) 292 cm = ? inches 292m 7) 4.42 inches ? m 442rx 8) 254.3 g = ? kg 9) 1257 km ? cm %3D 1257RmX T60…

A: For each of these conversions, we have to use the respective conversion factor to find the answer.…

Q: Two students determine the percentage of lead in a sample as a laboratory exercise. The true…

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Q: What prefix multiplier is appropriate for reporting a measurement of 5.57 * 10 - 5 m?

A: Metre (m) is the SI for measuring distance. Some of the prefix multipliers are:…

Q: Perform the following calculation: (-0.00030-c xem 27.5 °C) + 1.0042 cm3 What is the answer to the…

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Q: density of the cube in g/cm^3? Write in decimal form

A: Side length of cube(a) = 13.1 mm = 1.31 cm  So, volume of Cube(V) = a3  V = (1.31)3 = 2.25 cm3 Mass…

Q: After carrying out the following operations, how many significant figures are appropriate to show in…

A: We have to predict the number of Sig figs in result.

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

A: 1km = 1000 m 1m = 100 cm

Q: what is the sum of the measured values 539, 35.4, 0.90, and 9.0 ?

A: For the addition of the number first we have to count the significant figures in the in the decimal…

Q: Consider the following two volume measurements: 57.7 mL and 57.68 mL. Which of these is the more…

A: Accuracy and precision are two measures of observational error. Precision refers to how close the…

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

A: Formula : 1 kg = 103 g 1 m = 102 cm  1 kg.m = 105 g.cm   -1.4 × 103 kg.ms × 105 = -1.4 × 108 g.cms…

Q: State the nomenclature for prefixes used to examine large and small measurements in scientific…

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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.