Explain significant figures and decimal places in Chemistry

Q: When 33.911 is added to 82.649, the result should be reported with digit(s) after the decimal point.…

A: While subtraction or addition, the number of decimal places in the result are same as the…

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 student needs to determine the density of two metal objects. The first object is a cube and the…

A: Given,mass of metal cube = 52.55 g                edge length of a cube = 2.16 cm    2. mass of a…

Q: Table salt contains 39.33 g of sodium per 100 g of salt. The U.S. Food and Drug Administration (FDA)…

A: Mass of salt that contains 39.33 g Na = 100 g salt. Mass of salt that contains 2.40 g Na = 240/39.33…

Q: Perform the indicated math operation, and round off the answer to the correct number of significant…

A: Significant figure calculation rule used in multiplication or division: The number of significant…

Q: The "Nutrition Facts" on a label of a 32 fluid ounce container of apple juice states that a serving…

A: Given that 8 fluid ounces contain 240 milligram(mg) potassium Conversion factor: 8 fluid ounces =…

Q: A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the…

A: We are provided with mass and volume of unknown liquid. First we need to calculate density and then…

Q: The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s.…

A: Length of swiming pool = 1500.0 m1 mi = 1609 mLength of swiming pool = 1500.0 m1609 m* 1 mi = 0.9322…

Q: A brick of metal has these dimensions:  7.07 in  x 9.20 in x 7.15 in.  It has mass 8.1 kg.  What is…

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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: Calculate the answers and determine the correct number of significant figures. (9.69 x 10* mg) +…

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Q: Calculate the mass in grams of 92.6 ml of diethyl ether, an anesthetic that has a density of 0.713…

A: Density is defined as mass per unit volume of a substance. It is an intensive property which depends…

Q: Carry out the following conversions. Report your answers to the correct number of significant…

A: One measurement can be converted from one unit to the other unit by conversion factor. It will be…

Q: The density of gold is 19.3 g/cm3. Johan van der Smoot determines the mass of an irregularly shaped…

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Q: A flask containing 7.56 mL of a liquid weighs 164.7 g with the liquid in the flask and 156.5 g when…

A: The density of any substance is the ratio of its mass to its volume. therefore ,

Q: The melting point of an unknown solid is determined to be 32 °C. What is this temperature on the…

A: Temperature is generally expressed in degrees celcius (°C)  For example :-  Room temperature = 25°C…

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: A cheetah ran 1000.0 meters in 33.27 seconds, how fast is it running in miles per hour (MPH)? Note:…

A: Given information: 1 miles = 1.609 km              = 1609 m 1 hour = 3600 sec

Q: A pharmacy technician measures the mass of a pill. The mass of one pill is  208   mg . What is the…

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Q: A cylindrical glass tube 20.0 cm in length is filled with acetone. The mass of the acetone to fill…

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Q: Robert was able to travel 292.0 miles in 4.000 hours and used 38 liters of gasoline. What was…

A: Given,Distance travelled by Robert's = 292.0 milesTime taken for travel = 4.000 hoursVolume of…

Q: T added 3 kg of water to my Tish tank.

A: Water density =1  Water in kg and in litre will be same.  1st option : Kilogram of mass , but here…

Q: A student reported the density for ten glass beads as d = 2.507 g / 1.22 mL = 2.054918033 g/mL…

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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: The diameter of a hydrogen atom is about 1.04 x 10-10 meters. A protein molecule has an overall…

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Q: significant

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Q: A parsec is an astronomical unit of distance. 1 parsec = 3.26 light years (where 1 light year is the…

A: 1 Parsec equals 3.26 light year Speed of light =  186,000 miles per second or Speed of light  =…

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

A: Non zero digits are always significant.

Q: Is this data precise? Explanation required.

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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: A student measures the melting point of an unknown compound to be 53.5 degrees C. She later…

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Q: Very large and very small numbers are easier to write in scientific notation. For example, the…

A: Exponential notation for a number can be written in such a way that large numbers are written in…

Q: Width 3.56 cm Length 5.425 cm

A: Area of a rectangle with length (a) and width (b) =ab The least number of significant figures in any…

Q: How close does the lightning have to strike for you to hear it 2.5 s after it strikes? Round to two…

A: Light travels faster than sound. So it hits before sound. We can easily calculate the distance of…

Q: The Blue Giant of the Orient is the largest faceted sapphire in the world, with a mass of 486.52…

A: Density : Density is defined as the mass of a substance per unit volume.…

Q: What is the correct answer for the calculation of a length (in cm) with measured numbers (28.58 cm3…

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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.