Which of the following is a best practice in weighing solid samples?   Do not return the mass settings to zero mark; let the next user tare it for you.   Use weighing paper, a watch glass, a beaker, or some other container to measure mass of your solid samples.   Place chemicals directly on the balance pan.   For different trials of an experiment, use multiple balances for your measurements.

Q: of 10 A student is measuring the mass of a solid sample using an electronic balance that measures to…

A: The given electronic balance measures to the thousandth of a gram that is 1/1000 g (=0.001g). The…

Q: What are the typical three components of paint? * binders,liquids, and pigments. A student needs…

A: Three typical components of paint: Paints generally have four main components. They are: Pigments,…

Q: A group of five students attempted to estimate 100 g of a substance by balancing the amount of the…

A: Solution It has the average: Mean = (95.8634 + 80.8125 + 106.5078 + 98.2865 + 86.4453) / 5 = 93.5831…

Q: Which statement about a volumetric flask is correct?     Each volumetric flask has several…

A: Given statements: Each volumetric flask has several calibration marks (on the neck of the flask), so…

Q: You drop another bead into the column and observe that it makes it all the way to the bottom of the…

A: In the question we have given that a plastic bead and we dropped in column having four different…

Q: Twelve (12) samples were weighed on a balance, their combined mass is 13.62 g.  With the…

A: Given :-  total samples = 12  combined mass = 13.62 g  To be calculated :-  average mass of each…

Q: Which of the following is a best practice in weighing solid samples? A Use weighing paper, a watch…

A: Answer  Best practice in weighing solid samle In given all options…

Q: If the density of water = 1.000 g/mL, determine true volume of water in a 10 mL grad cylinder filled…

A: The volume of water can be calculated from the density and mass of water.  The true volume of water…

Q: Express each answer in scientific notation in the units indicated.a. (1.26 × 1 0 4 kg) + (2.5 × 1 0…

A: Note: Since you have posted a question with multiple subparts, we will solve the first three…

Q: 1. Examine each sample. Do not attempt to taste them. 2. Fill in the table below by the properties…

A: As per the guideline, Since you have posted a question with multiple sub-parts, we will solve the…

Q: Which of the following is incorrect: a. General steps in quantitative analysis include: Method…

A: A multiple choice question based on chemical analysis, which is to be accomplished.

Q: A cylindrical wooden rod measuring 24.0 cm in length and 2.16 cm in diameter, weighs 80.9 g. If the…

A: Density is defined as the mass per unit volume. It is represented by rho . Its relation is as…

Q: Which of the following is a proper practice in transferring a certain volume of a liquid reagent…

A: We are to discuss the correct method of transferring liquid from reagent bottle to our own…

Q: Drag the answers that have been correctly rounded to the appropriate number of significant figures…

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Q: 1. Comment on the differences in measurements obtained on the same objects using the meter stick,…

A: A question based on general chemistry that is to be accomplished.

Q: Which of the following is incorrect: a. General steps in quantitative analysis include: Method…

A: Statement a is correct as it includes general steps in quantitative analysis.  Statement b is…

Q: A chemistry student weighs out 0.187 g of sulfurous acid (H,So,), a diprotic acid, into a 250. mL…

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Q: 1. Convert the number 3,200,000 into scientific notation with the same significant figures? 2.…

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Q: A student obtained a density versus percent by mass sodium chloride standard curve for the Salt in…

A: The best fit curve on the density v/s percent by mass of NaCl solution is given as, => y =…

Q: Describe the difference between accuracy and precision. How do we determine accuracy and precision?

A: Accuracy is the measure of closer agreement between true value or accepted value and  specific…

Q: List all pictograms that are not hazard symbols but are seen in the laboratory

A: A pictogram is a chart which uses pictures to represent data in a simple way. The list is as…

Q: Experiment 5-Data Anolysis for Accuracy and Precision - A second group of students performed the…

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Q: When you see this number: 0.00000123, how do we mathematically and scientifically see this:  a. it…

A: Significant figures refer to the number of digits that are involved in the determination of the…

Q: 1. In mL what is the volume of liquid in the burette pictured on the right (to the correct number of…

A: Three questions based on quantitative analysis, which are to be accomplished.

Q: 1- Which statement is not a good practice during weighing in Chemicals should never be placed…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

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: Part 3: Calculate density of a metal an unknown metal. 1. Using the pictures below, record the…

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Q: lass 0.900 0.800 y=0.608x + 0.011 0.700 0.600 0.500 0.400 0.300 0.200 0.100 0.000 0.00 0.20 0.40…

A: Given :  We have to calculate the density of unknown solution.

Q: Read the paragraph below and identify the aspects of the scientific method that best align with each…

A: The given statements involved some activities on the basis of which, the mentioned scientific…

Q: 2.Classify the following as mixtures or pure substances. Enter M or PS for your answer. If it is a…

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Q: Given the following information determine the % difference between the two weights. Trial 1 Weigh…

A: Given that --- Trial 1: weight of boat + sample = 14.85 g  --------(i) weight of boat = 11.11 g…

Q: The density of a pure substance is its mass per unit volume. The density of ethylene glycol has been…

A: given density = 1097 g/L volume = 205 ml

Q: Students used a balance and a graduated cylinder to collect the data shown in Table 2.6. Calculate…

A: Percentage error is defined as the difference between the estimated value and the actual value…

Q: I don't know where to start. I found the average.

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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: part 1 Which of the following is a best practice in weighing solid samples?   Use weighing paper,…

A: solid  sample  you can weigh it directly on the pan by using paper watchglass . Be sure the balance…

Q: Which of the following is NOT true about constant weighing in the experiment? It involves a cycle of…

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Q: Suppose you were measuring out an organic liquid, and some of it is evaporated after you have…

A: The density of the substance is calculated by the relation shown below. Density=massVolume

Q: Which of the following is a best practice in weighing solid samples?   Use weighing paper, a watch…

A: Q. 1 Best practices in weighing solid samples

Q: Define “drift” when using a balance. - unstable weight readings, which typically occur due to static…

A: Drift: Unstable weight readings, which are most commonly caused by static charge and fluctuating…

Q: Why should the selected rule(s) be followed? Weighing wet items will cause the displayed mass to be…

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Q: At the end of the school year a high school chemistry teacher asks one of his/her students to stay…

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Q: Which of the following is a best practice in weighing solid samples? A Place chemicals directly on…

A: For the majority of everyday objects, a balance is used to determine an object's mass. The balance…

Q: A sample of an unknown mineral weighs 54.8 g and has a volume of 7.84 ml. It is __________.…

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Q: In an experiment regarding measurements and significant figures, one student weighed an object using…

A: The student used a triple-beam balance for the measurement.

Q: precise. You work in a chemistry lab. The chemical test you do is based on a color change when two…

A: The color of the reference standard is yellow The color of the first 5 samples is also yellow. The…

Q: Use dimensional analysis to convert the volume for the English measurements of tablespoon and…

A: Dimensional analysis is the study of relation between physical quantities based on their units and…

Q: State the nomenclature for prefixes used to examine large and small measurements in scientific…

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Q: Which of the following is incorrect: a. General steps in quantitative analysis include: Method…

A: Statement a is correct as general steps is quantitative analysis includes all given steps.

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.