Report your measurements to the correct number of significant figures.

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: An iron atom has a mass of 9.27 x 10 23 g and a cooking pot has a mass of 0.500 kg. Use this…

A: 1 mole of a substance contains Avogadro's number (6.02 X 1023) of particles.

Q: density of unknown liquid initial mass of erlenmeyer flask 119.528 g final mass of erlenmeyer…

A: In the question Following information given -   Initial mass of erlenmeyer flask = 119.528 g Final…

Q: Determine the density of a metal weighing 342.0g that displaces 10.5ml of water when placed in a…

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: Look up the measurement of the approximate thickness of a human hair.a. Convert the measurement to…

A: (a)

Q: A sample containing 16.81 g of metal pellets is poured into a graduated cylinder initially…

A: Mass of the given sample = 16.81 g Initial volume of water = 12.2 ml Final volume of water = 18.1 ml

Q: 42.8 grams of zinc shot is added to 15.8 ml of water in a graduated cylinder. the water level rises…

A:

Q: For Questions #6 through #14, perform all of the following for each question: 1. calculate the…

A: Dear student,  As you have asked multiple question but according to guidelines we will solve first…

Q: 4.67*10^5 nm to meters

A: So, as we know that, 1 nm = 10-9 m 1 fm = 10-15 m 1 pm = 10-12 m 1 Å = 10-10 m 1 um = 10-6 m 1 mm =…

Q: My Data: 0.033 g/mL Class Data: 0.02904 g/mL 0.0256 g/mL Based on my results (0.033 g/mL), is the…

A: Measurements are taken repeatedly to confirm the value obtained and to ensure that findings are of…

Q: Density of Unknown liquid, mass of picnometer + liquid 61.005, what is the number of significant…

A: The rules for identification of significant figures are as follows : 1) All non zero digits are…

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: 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: 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: Which laboratory measurement is expressed to the correct number of significant figures? O 9.5011 °C…

A: The given value of temperature on the thermometer is 9.5011°C, time is 60 on tenths of the second…

Q: Measured values are written to the correct number of significant figures O to match the significant…

A: We will answer the above question by using basic concepts of chemistry.

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

A: In multiplication rounding off the answer to the least number of significant digits given in the…

Q: A solid metal weighs 3.5 g and displaces 500.0 mL of water. Calculate the densityof the metal…

A: We have to calculate the density of the metal (g/mL) when a solid metal weighs 3.5 g and displaces…

Q: Carry out the following mathematical operations and answer the questions that follow. 33.916 x 95.7…

A: The significant figure refers to particular digits in a number. According to the measurement rule,…

Q: In your calculation use the value 3.14 for T. Write your answer to the correct number of significant…

A: Volume of cylinder A can be calculated using its height and diameter given .

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: A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 10 g. Use this information to answer…

A: Mole interms of mass :   mole  = given mass/ molecular mass   n = w/M    Mole interms of particles…

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: A solid aluminum ball (density= 2700 kg/m³) is suspended in air from a scale, which reads 13.06 N.…

A: This is a pretty small sphere, so will change density to 2.7g/cc. (13.06 - 8.706) = fluid weight of…

Q: A raindrop has a mass of 50. mg and the Pacific Ocean has a mass of 7.08 × 10° kg. Use this…

A: 1 mole = avogadro number of particles = 6.022 x 1023 particles    Given that  1 rain drop = 50 mg…

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

A:

Q: mass of nitrogen, in kg? x10-26 kg. (Round to two decimal places.)

A:

Q: A typical office has 144 ft2of floor space. Calculate the floorspace in m2(use the proper number of…

A: While converting from 1 unit to another of same dimension a conversion factor is to be multiplied.

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

A: In chemistry, there are many ways to check the deviation of experimental data from the accurate…

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: A sample containing 33.72 g of metal pellets is poured into a graduated cylinder initially…

A: Given, mass of metal pellets = 33.72 g            initial volume of water in graduated cylinder =…

Q: Aluminum has a density of 2.0 g ml calculate the mass in grams of a piece of aluminum have any…

A: Density of aluminum = 2.0 g / ml volume = 398 ml

Q: Determine a single factor that can be used as a multiplier to 1.5 oz to grams

A: The term conversion factor can be termed as the formula or the number which is required for the…

Q: = new temperature c The correct number

A:

Q: What are the apparatus used to measure objects? What are they measuring (ex. Ruler measures the…

A: There are many apparatus used for measuring objects like for measuring length of an object,…

Q: A sample containing 34.92 g of metal pellets is placed into a graduated cylinder initially…

A: Calculate the volume of metal pellets:

Q: What is the only way to reduce random error in measurements?

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: alüminum atom has a mass of 4.48 × 10 g and a small airplane has a mass of 5000. kg. e this…

A: We are given mass of one atom and we have to find mass of one mole and calculate how many moles can…

Q: Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water.…

A: The combustion reaction is

Q: A student determined that the mass of four pennies was 8.7 grams. Use this information to calculate…

A: Given :-  No. of pennies in 8.7 g = 4  To calculate :-  No.of pennies in 2.5 pounds

Q: Convert 999  mm3/s to km3/day. (Integral or decimal)

A: Here we are required to convert the following unit  mm3/s to km3/day.

Q: Round 19,320.411 to 3 significant figures. Please express in decimal form, not scientific notation.

A: The rules for the significant figure are: Numbers other than zero with a decimal point are…

Q: A 19.0-cm-long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of…

A:

Q: Use the References to access important values if needed for this question. When 52.7 and 84.3 are…

A:

Q: A sample containing 20.30 g of metal pellets is poured into a graduated cylinder initially…

A: The density (D) of the metal is obtained as the ratio of the mass (m) to its volume (V) as follows:…

Q: An empty beaker has a measured mass of 29.456 g. When some salt is added to the beaker, the combined…

A: Mass of empty beaker = 29.456 g  Combined mass when salt is added to beaker = 36.176 g  Mass of salt…

Q: A graduated cylinder has a height of 7.12 inches. Make the following conversion Height in km

A: It is given that the height of a cylinder is 7.12 inches. The height can be converted to km by using…

Q: A sample containing 12.98 g of metal pellets is poured into a graduated cylinder initially…

A: Mass metal pellet = M = 12.98 g Initial volume of water in graduated cylinder = V1 = 14.0 ml Final…

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.