You are in a game show and you are asked to pour a gram of sand in the balance, the person closest to the gram wins you measure 0.894g, individual 2 got 765 milligrams, individual 3 got 1.25g and individual 4 got 0.0489 kilogram what is the percent error for each? which one was more accurate? can the combined measurements be counted as precise?

Q: If an object has a density of 3.99 g/cm , what is its density in units of kg/m 3? 3.99 x 103 kg/m3…

A: The Density is defined as the ratio of the mass of the substance to that of volume of that…

Q: Ethanol has a density of 0.789 g/cm3. What volume of ethanol in mL must be poured into a graduated…

A: Rules for significant figure  All non zero integer are significant  Exact number have unlimited…

Q: Round each answer to the correct number of significant figures. 28.10 3.29 8.5410 = 9+2.8 - 0.135 +…

A:

Q: 56. Round the number on the left to the number of significant figures indicated by the example in…

A: Significant figures of a number are those which are absolutely necessary to explain the numbers…

Q: The base unit for volume in the metric system is the liter. 1 ul= L. 10 10 10 10

A: The given volume is = 1 μ L And we are going to convert this volume into a liter unit. The…

Q: It seems that either your starting amount is incorrect or one of your conversion factors has an…

A: Volume: 22.3gallon1 gallon = 3.785LDensity= 0.8206g/ml

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

A: Answer:- This question is answered by using the simple concept of dimensional analysis using the…

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

A: The conversion of quantity from one unit system to another unit system is known as unit conversion.…

Q: Perform the following calculations and be sure to report your answer using correct number of…

A: Solution In chemistry, vital figures ar the digits important that carry that means towards the…

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

A: Given -- >  (-1.8 x 105 kg.m/s )  We know that , 1kg = 1000 g  1 m = 100 cm

Q: At a local farmer’s market, a vendor sells apples at a cost of $0.79 for exactly 1 pound. If 17…

A:

Q: Calculate the answer with the correct number of significant figures. Assume that all the numbers are…

A: The problem given is (91.44-101.1)83.799= ___________

Q: 2. Write down the answers with the correct number of significant figures: 34.1 X 4042 = (4.13)? =…

A:

Q: (*) 0- J kJ 37. mmol · °C ? mol · °C

A:

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

A:

Q: 3. Complete the blanks in each row, as in the first example: Unit name Property measured Unit symbol…

A: Unit name: microgram The property measured: mass Unit symbol: μg Power prefix: 10-6

Q: if you multiply 10^9 by 10^-1 what is the exponent of the final answer you need to only enter a the…

A: To solve this problem we have to do unit conversion

Q: A student performs an experiment to determine the density of a sugar solution. The student obtains…

A: Accuracy is an analytical technique which tells us how close the observed value is to the true…

Q: you measure the initial volume of water in a graduated cylinder to be 23.5 mL and the final volume…

A: According to the question, The initial volume of water in the cylinder = 23.5 ml The final volume…

Q: (- 10° 3 kg• m g'cm 3.6 X = ? S S

A:

Q: A chemistry student needs 80.0 mL of methyl acetate for an experiment. By consulting the CRC…

A: To calculate the mass of methyl acetate needed, we can use the…

Q: An experimenter has weighed a penny 6 times in units of grams as reported below. 2.224842 3.168283…

A: The objective of this question is to calculate the average weight of a penny based on the given…

Q: 5. The Handbook of Chemistry and Physics lists the density of a certain liquid to be 07988 g/mL.…

A: Fred did not get "A" in the exam

Q: In the lab, a student measures a teaspoon of an unknown liquid. The teaspoon of liquid has a mass of…

A:

Q: Acetone is a common solvent that has a density of 0.7899 g/mL.0.7899 g/mL. What volume of acetone,…

A: Density = Mass/ volume  Density of Acetone is 0.7899 g/ml  0.7899 g of acetone has volume 1 ml  lets…

Q: A chemistry student needs 90.0 g of carbon tetrachloride for an experiment. By consulting the CRC…

A:

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

A: When given unit is multiplied by Conversion factor for desired unit, we get desired unit. e.g. 1 Kg…

Q: A chemist needs to know the mass of a sample of MgCl, to 2 significant digits. He puts the sample on…

A:

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

A: The conversion of units into one form or the other by mathematical operations is called as unit…

Q: Are numbers below exact or measured numbers?    Number Exact or Measured Number Exact or Measured…

A: The exact number is the number which contain two or three digits after the point . If it is 0 then…

Q: 1. a) For a particular metal, a student measures the volume to be 15.0 mL and a mass of 22.34 grams.…

A:

Q: Sally wants to determine the volume of water that is needed to fill her ice-cube tray. She cannot…

A: Sally wants to determine the volume of water that is needed to fill her ice-cube tray. She cannot…

Q: A sample of waterer (density is 0.998 g/mL) is measured to be 25.7mL. What is the mass of water in…

A: Mass = Volume x density

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

A:

Q: Multiply 642.67 quarts by 4.3562. What is the answer in correct significant figures? 2. Convert the…

A: Here, Quatrz = 642.67 quatrz.

Q: A jet airplane reaches 887. km/h on a certain flight. How long does it take to cover 454. m? Set the…

A:

Q: A student found that 39.621g of copper wire displaced 4.51 mL of water. If the actual density of…

A:

Q: 3.32 x 10- g to micrograms Express your answer to three significant figures and include the…

A: Given : Value in grams = 3.32 X 10-5 g

Q: A sample of liquid has a mass of 32.9465 g and a volume of 31.43 mL. Determine the density of the…

A: Mass of sample = 32.9465 g  Volume of sample = 31.43 ml  Density of sample = ?

Q: When you perform the following operations, how many significant figures should your answer have?…

A: when adding or subtracting measurements with significant figures,the result has the same number of…

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

A: 1200000 g.cm/sExplanation:

Q: Which of the following are CORRECT regarding significant figures? In your answer, please list the…

A: Significant Figures: These are digits used to express the precision of a quantity. The numbers that…

Q: I'm confused with this question: 7.379 * 10-4m3 * (100cm/1m)3 * 19.3g/cm3 I know that I need 3…

A: From the equation i can see, i think you made a calculation error. The expression written is…

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.