What measuring devices can be used to be accurate? Choose all that apply. a. Micropipette b. Volumetric pipette с. Вeaker d. Mohr pipette

Q: The Mohr-Westphal Balance applies the plummet and sinker method in specific gravity determinations.…

A: The Mohr-Westphal Balance applies the plummet and sinker method in specific gravity determinations.…

Q: The estimated density of water (in units o/mL) at the above temperature was found ushng " standard…

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Q: What type of glassware is used for quantitative work? A. Volumetric flask B. Beaker C. Erlenmeyer…

A: Given : Different type of glassware used for quantitative work.  To find : which type of glassware…

Q: Choose the factor that explains this observation.

A: Organic compounds  can be defined as the compounds that contain carbon and hydrogen atoms in a…

Q: Why does Celsius and Fahrenheit have a direct relationship on a graph?

A: The temperature is measured by centigrade scale and Fahrenheit scale. The temperature is expressed…

Q: mass of ice = 50.0g  mass of water 200.0 g  T water = 50.00°C T ice =- 10 °C Final temp = 23.04…

A: Given the experimental final temperature, T = 23.04 oC Since water is at higher temperature, it will…

Q: 5. Sketch the following: a. [203] b. (121)

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Q: For each trial (data in Tables 3 – 5) graph the volume of water displaced (in mL) on the x-axis…

A: The graph given shows the amount of water that is displaced with respect to time. The slope of any…

Q: average mass of a penny: 2.64  Using your average mass of a penny, how many pennies would be in one…

A: Given: The average mass of one penny=2.64 g  Conversion factor 1lb =454 g The number of pennies in 1…

Q: e-Laboratory Questions Define specific gravity. What units are used for specific gravity?

A: The specific gravity is define as the ratio between the density of an object, and a reference…

Q: Mention 3 products available on the market where its specific gravity must be measured

A: Given data :   Mention 3 products available on the market where its specific gravity must be…

Q: please write down its units.

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Q: used a 50-mL eudiometer while Group Y used a longer 100-mL eudiometer. After the experiment, both…

A: the volume readings in their eudiometers compareGroup X > Group Y

Q: Explain why you wouldn’t use a beaker to accurately measure volume

A: Beaker is glass equipment used in laboratory.

Q: The weight per unit volume of a liquid at a standard temperature and pressure is called Select one:…

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Q: The filtration techniques was used in limiting experiment:

A: Find the solution given below

Q: Express your answer to two significant figures and include the appropriate units. HẢ Value Units m =

A: Answer :  Mass of silver= w (let) Molecular weight of silver (M)= 107.86g No. Of electron transfer…

Q: Complete the table and answer the question that follows. a. Calculate the average mass of the…

A: In the experimental data we have to calculate the average mass of unknown gas, density and Standard…

Q: Use the References to access important values if needed for this question a. When 71.292 and 66.15…

A: There are rules for addition, substraction, division and multiplication for significant figures.  In…

Q: a sample containing 33.42g of metal pellets is pound into a graduated cylinder initially containing…

A: Given mass of metal                 = 33.42 gram  Initially volume of water = 12.7 mL  Final Volume…

Q: Solve for: 146.381 mL -31.4 mL= report answer to the correct number of decimal places and include…

A: Significant figure represents all the digits of a number that are significant with respect to…

Q: Question 1.5 Why is it important to wipe the cuvette before every measurement? (a) To make sure that…

A: Cuvette is used in laboratory to put samples in for the spectroscopic analysis. Cuvette allows the…

Q: What is the measurement for the double-sided thermometer?

A: In the double sided thermometer shown one side presented as F(left side) is the temperature in…

Q: What is the coefficient (Please note that eler should be a whole nur XO4 +Y204² Y

A: Redox reaction,  XO4- +Y2O42- ---> YO2 + XO2 Half reaction splitting  XO4- ---> XO2 Y2O42-…

Q: 28. 29. 30. -30| -75 100 20 65 90 10 55 80 Graduated cylinders #28-30 were mL. measuring increments…

A: The reading given are,

Q: Show all  computations  and  express final answer in  sig  fig  and  scientific  notation.  Box  out…

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Q: Question: Observation before filtration and Observation after filtration.

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Q: a. What two quantities must you measure to determine the density of a substance? b. Design and…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: Research and provide the densities of cesium and rubidium. Be sure to include units.   cesium:…

A: density of rubidium:-1.9 g.cm-3 at 20°C

Q: What would be the product of this reaction? Please draw it out.

A: The given reaction is called catalytic hydrogenation reaction. This catalytic hydrogenation process…

Q: b. Read the bar length properly.

A: The measurement given is,

Q: Match the unit abbreviation with the quantity being measured cm mL g/mL C bb mol °℃ atm [Choose]…

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Q: A D B.

A: When zn Reacts with HCl -->H2 gas is liberated . And with the help of Eudiometer,the volume of…

Q: Weight of coin 1 (g) 11.4286 Weight of coin 2 (g) 11.4633 Weight of coin 3 (g)…

A: Solution -

Q: dimensional analysis

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Q: Part B 2.40x105 Pa Express your answer using three significant figures. ? P = atm Submit Request…

A: Pressure is defined as the force applied by the molecules per unit area. It is expressed in various…

Q: Calculate the error and percent error

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Q: 8. 9. 7. 17 63 -391 38 -16 62 37 15 61 Graduated cylinders #7-9 were measuring increments of mL.

A: The reading given are,

Q: Why does the water go up to the bottle? I need claim, evidence and reasoning

A: Why does the water go up to the bottle? Answer and explaination is given below.

Q: Random error, also c

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Q: How many megaseconds are there in 31.818 deciseconds?

A: We will use the concept: 1 megasecond = 107 decisecond or 1 decisecond  = 10-7 megasecond

Q: If the mass of the gravel used in this experiment was increased three times at the same temperature,…

A: Density is defined as mass of a substance per unit volume of it. So if mass increases, the density…

Q: An empty pycnometer bottle was found to weigh 28.3892 g. Weight when filled with water is 53.1890 g,…

A: Specific gravity of any compound is calculated as : Specific gravity = Density of compound / Density…

Q: A rubber stopper weighing 8.554g displaces 7.0mL of water in a graduated cylinder.Refer to example…

A:

Q: Write about material testing in chemistry (main categories with examples)

A: A question about material testing in chemistry, which is to be accomplished.

Q: the normality

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Q: While a student was preparing a series of standards, the pipette that he used for dilution was not…

A: Given, a student is preparing a series of standard solutions. During this process the pipette is not…

Q: use data to discuss whichc calculated density is more accurate.

A: Density is obtained by dividing mass by volume Density(d) = mass(m)Volume(v) => m = d*v (or) v =…

Q: silver I silver 2 silver 3 Mass of silver colored sample in grams 29659 413 349 54.155 Initial…

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Q: For the image attached Make a graph of the average volume and vs year. Please label your x and y…

A: The graph to be plotted is Average Volume Versus Year.  Hence we have to take "Average Volume" on…