How should he record his answer, to the correct number of significant figures?

Q: If I have a measurement of a diameter using a ruler with increments in mm: 1.70cm diameter then…

A: For multiplication and division: The least of significant figures in any number of the question…

Q: A chemistry student needs 60.0 g of tetrahydrofuran for an experiment. By consulting the CRC…

A: The density is an intrinsic property that given the mass of an object per unit volume.…

Q: A chemist has a block of aluminum metal (density is 2.7 g/mL). The block weighs 1.1 g. What is the…

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Q: A chemistry student needs 70.0 g of tetrahydrofuran for an experiment. By consulting the CRC…

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Q: A stone has a mass of 12.3 g is added to a graduated cylinder filled with water to the 38.0 mL mark.…

A: Given -   mass = 12.3 g. volume = 40.3ml - 38.00ml = 2.3 ml density = ?

Q: Perform the following mathematical operations, and express the result to the correct number of…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Calculate (2.075 x 0.585)/(8.42 x 0.0045) Correct the answer by rounding off the number to the…

A: Significant Numbers are those numbers or digits in the given number which are used in mathematical…

Q: Bob and Jill are measuring the height of Mr. Chenet (Mr Chenet is 1.8593 meters tall). Bob gets a…

A: Accuracy It is defined as the closeness of measurement to specific value means we will have one…

Q: The density of copper is 8.92 g/ml. and the density of lead is 11.35 g/ ml. If equal masses of…

A: Density is the ratio of mass to volume.  Density =  mass / volume    Density is directly…

Q: A chemistry student needs 30.0 g of diethylamine for an experiment. By consulting the CRC Handbook…

A: Ans

Q: Determining the Number of Significant Figures in a Calculated QuantityThe width, length, and height…

A: Width of the box (b) = 15.5 cm Length of the box (l) = 27.3 cm Height of the box (h) = 5.4 cm Volume…

Q: The numerical value for (5.6 x 104) ÷ (7.89 x 102) is equal to, with the proper number of…

A: Division of significant figures :- The answer of the division should have the same number of…

Q: Consider the equation: (9 x 10^-38) x (9.00 x 10^3) x 35.3= Y  how many significant figures should Y…

A: The significant figures can be defined as the digits in the given number that carry some meaning and…

Q: A brick of metal has these dimensions: 8.88 in x 7.95 in x 5.41 in. It has mass 17.8 kg. VWhat is…

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Q: why it is important to use significant figures in measurement? What is an example of significant…

A: Significant figures/significant digits form an important part of mathematical and scientific…

Q: a small sheet of aluminum metal (?=2.70 g/cm3). The sheet had a mass of 1.3648 g, a length of 2.05…

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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: You add 6.2 g of iron to 23.00 mL of water and observe that the volume of iron and water together is…

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Q: Perform the following calculation and input the answer expressed to the correct number of…

A: Non zero digits are always significant.

Q: A bakery measured the mass of a whole cake as 0.870 kg. A customer bought one slice of the cake and…

A: Rule for Significant figures (SF) in mathematical operations:(1) Addition and Substraction round by…

Q: A student measures 49.2 mL of concentrated nitric acid, which has a density of 1.53 g/mL. Part A…

A: Density ( d ) :- Density is defined as the ratio of mass and volume of solution. Density(d) = mass…

Q: A 26-meter-tall statue of Buddha in Tibet is covered with 279 kg of gold. If the gold was applied to…

A: Given: Height of statue = 26 m Thickness of statue = 0.0015 mm Mass of gold statue = 279 kg Gold…

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: Using significant figure rules, the answer of 213 miles / 4.2 hours is equal to which of the…

A: In Multiplication and Division, The LEAST number of significant figures in any number of the problem…

Q: A sheet of aluminum (Al) foil has a total area of 1.000 ft^2 and a mass of 3.806g.  What is the…

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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: The density of iron is 7.87 g/mL. What is the mass of a 4.00 cm × 4.00 cm × cm × 1.00 cm block of…

A: given density = 7.87 g/ml cross section = 4.00 cm × 4.00 cm × 1.00 cm

Q: There are exactly 60 seconds in a minute, exactly 60 minutes in an hour, exactly 24 hours in a mean…

A: 60 smin ×60 min1 hour ×24 hour1 day ×365,24,daysolar year  =31556736 s/solar year

Q: A chemistry student needs 85.0 mL of diethylamine for an experiment. By consulting the CRC Handbook…

A: 85 ml of diethylamine is taken.  The density of it is 0.706gcm-3

Q: Horse height is measured in hands, one hand equaling exactly 4 inches. If a horse is 15.5 hands…

A: The unit conversion method can be used here.

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

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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: 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: A 26-meter-tall statue of Buddha in Tibet is covered with 279 kg of gold. If the gold was applied to…

A: given, weight of gold = 279 kg = 279000grams thickness = 0.0015 mm = 0.00015cm density of gold =…

Q: A 1995 penny having a mass of 2.931 g is cut to expose the zinc and dropped into sulfuric acid.…

A: The mass of the given penny is = 2.931 g The mass of the copper shell is = 0.059 g The mass of zinc…

Q: When multiplying 602.4 m by 3.72 m, which value determines the number of significant figures in the…

A: There are some rules for assessing the count of significant figures in a number. For division and…

Q: The density of copper is 8.92 g/mL, and the density of lead is 11.35 g/ mL. If equal masses of…

A: Given: The density of copper = 8.92 g/mL The density of lead = 11.35 g/mL

Q: An astronomer measures the distance from Earth to a newly-discovered asteroid. The distance is 2.38…

A: • The values provided in the question are:-    i) Distance between earth and newly discovered…

Q: A general chemistry student found a chunk of metal in the basement of a friend's house. To figure…

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Q: A 2.83 g piece of zinc (density = 7.14 g/mL) is added to a graduated cylinder that contains 12.13 mL…

A: According to the question, the graduated cylinder is filled with 12.13 mL of water. A piece of zinc…

Q: (2.241 mm )(2.8 mm ) Complete the operation and express the answer with the appropriate number of…

A: The operation expressed and the appropriate number of significant figures:Unit same for both values…

Q: A scientist obtains the number 0.045006700 on a calculator. If this number actually has four (4)…

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Q: Choose the best conversion of 887.913 to scientific notation with three significant figures. 0.888 x…

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Q: You were asked to determine the perimeter of the cover of your textbook. You measure the length is…

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Q: Rolls of foil are 304 mm wide and 0.014 mm thick. (The density of foil is 2.7 g/cm3 .)What maximum…

A: The density of a substance is equal to the ratio of its mass and volume. In general, the density of…

Q: Use mass density to find volume (picture is included)

A: Given:Mass of Carbon tetra chloride= 35.0 gDensity= 1.59 g/cc

Q: A chemistry student needs 70.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given  Mass of dimethyl sulfoxide = 70 gram   density = 1.10 gram.cm-3 or 1.10 gram/cm3 Volume = ?

Q: A chemistry student needs 35.0 mL of dimethyl sulfoxide for an experiment. By consulting the CRC…

A: Given, volume of dimethyl sulfoxide = 35.0 mL  1 cm3 = 1 mL  35.0 cm3 = 35.0 mL  Density of dimethyl…

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.