An analyst weighs the same tablet three times on a well calibrated analytical balance and obtains the following masses: 1.2356g, 1.2351g and 1.2349g. These differences are likely due to: A) instrument error  B) gross error  C) random error D) systematic error

Q: The mass unit associated with density is usually grams. If the volume (in mL or cm3) is multiplied…

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Q: Underline significant figures 24040 0.04800 4.020 1.08 x 105 0.0022 9000000 2.00 x 10-5 8.60 x 102…

A: The Significant figures are determined by using the rules of significant figures, 1. Non Zero digits…

Q: Trial 1 Flask Reference Drops Net of Acid added Acid 15 drops drops of 25 (ref- expt) UMCO₂…

A: The main ai of this experiment is to determine the buffering capacity of fish blood using a…

Q: 2. You are weighing a solid on our analytical balances and are weighing by difference. Your initial…

A: In the substraction of two uncertain numbers the uncertainty of the difference is the sum of the…

Q: A measurement of the mass of a specimen was determined to be 4.203 +- 0.001 g. What is fractional…

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Q: A solution of F is prepared by dissolving 0.0738 + 0.0006 g NaF (molar mass = 41.989 + 0.001 g/mol)…

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Q: A small amount of resin weighing 4.56g occupies a height of a 10mL graduated cylinder equivalent to…

A: Mass of resin = 4.56 g  Initial volume = 1 ml  Final volume = 1.7 ml  Density of resin = ?

Q: It was determined that the average CHEM110 student extracts 1.42 of starch from every 100 g of…

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Q: Give two examples of the offset errors

A: Offset error arises due to the initial point is not calibrated to zero.

Q: What is the percent abundance (in units of percent) of zinc in a sample whose density is 7.639 g/mL…

A: The explanation is given below-

Q: Express the corresponding readings, taking into account the figures that you can read with certainty…

A: In the given scale we have ten divisions between marked values. That mean we have ten divisions for…

Q: (285.0 x 10°)- (1.300 x 10')] × 2.8988 Express your answer to the appropriate number of significant…

A: Following are the appropriate answers of the given questions.

Q: 3.) Perform the following calculations. Express your answers in scientific notation using the…

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Q: Convert a speed of 751 cm/s to units of inches per minute. Also, show the unit analysis by dragging…

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Q: Complete each of the following calculations, and give your answer to the correct number of…

A: Answer:In the given problem we have to perform the fundamental mathematical operations and have to…

Q: A solid object has a true mass of 91.4132 pounds. A student measured the mass of the object in a…

A: Measured mass is equal to actual mass plus the value of  percentage error of actual mass.

Q: Suppose you have 150. mL of a substance with a density of 42.0 g/dm3 and want to determine the mass…

A: 150 mL of a substance has a density of 42.0 g/dm3 .We have to calculate the mass of the substance…

Q: A doctor prepared a drip of 60 mL per hour for a patient in ward B,  while the correct dose of  62…

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Q: A solution of F is prepared by dissolving 0.0827 ± 0.0006 g NaF (molar mass = 41.989 + 0.001 g/mol)…

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Q: 3. A student is using a 10 mL volumetric pipet to dispense water and wants to test how accurate the…

A: A numerical problem based on uncertainty measurements, which is to be accomplished.

Q: 1. The true value of a particular measurement is 131.0 µg/L. Four chemists (A, B, C and D) each…

A: We need the answers of Q.1 to solve Q.3. So let's start from Q.1 #1:  Given the true value of the…

Q: The following data was reported for the density of a soft drink (pop). The true density of the pop…

A: In the question, the true value , the average value and the different set of data collected for the…

Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

A: The ratio of mass to the volume is known as density.

Q: Express the results of the following additions and subtractions to the proper number of significant…

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Q: Your laboratory instructor has given you two metal cylinders. The mass of each sample was determined…

A: The number of significant figures in a measurement decided by the least count of instrument or…

Q: Give an example from which the difference of Accuracy and Precision is described and explain why it…

A: Accuracy is the degree of closeness of measurements to the true value or reference value Precision…

Q: Using the calculated experimental average density of the liquid samples as reference, what is the…

A: Density = (Mass ÷ Volume)

Q: Suppose you have 150. mL of a substance with a density of 36.0 g/dm³ and want to determine the mass…

A: In this question we need to use dimensional analysis for converting the units .  For this we use…

Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

A: Density: The ratio of mass to the volume is known as density. density=massvolume

Q: uncertainty in the density

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Q: A group of students were trying to experimentally determine the density of an unknown liquid. They…

A: The data given is, And the volume of the liquid = 5.00 mL.

Q: A student places 14.8 mL of water in a graduated cylinder.  The mass of the water and the graduated…

A: As the metal pellets are added into the cylinder the volume of the cylinder changes as the metal…

Q: Using the given data, calculate: 1)Amount of CaCo3 2)Mass of CaCO3 in tablet 3)% mass of CaCo3 in…

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Q: 2. In your lab you made four mass measurements using a digital balance and the bar graph shown…

A: Systematic error,  error that is predictable and error may generate due to fault in the instrument…

Q: Plot the data appropriately on a properly formatted graph. Formatting should include descriptive…

A: The formula for density is  Density =massVolume So, the slope of a plot of mass on y-axis and volume…

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.