Figure 3.23

Q: a mass [ORA) initial (M) 0.0096 0.0289 0.0578

A: According to Langmuir adsorption isotherm, the fractional surface coverage is given by the…

Q: 1. Density of solids by volume displacement| Solid Copper Сopper Glass Iron Aluminum Form Wire…

A:

Q: What is the percent error? And how do I find it with the information provided.

A: Percent error or percentage error expresses as a percentage the difference between an approximate or…

Q: 26 1 0 14.12Mg+On → le+. O26 11 Na O 27 13 Al 27 11 Na O O 27 12Mg

A: The Correct Answer is Option C Na [ Mass Number- 27 & Atomic Number - 11]

Q: What is the mass of 2.6 L of ethyl alcohol, which has a density of 0.789 g/mL? Edit View Insert…

A: given, the volume of ethyl alcohol = 2.6L = 2.6×1000 mL = 2600mL density = 0.789 g/mL

Q: In a gravimetric determination of lead content in brass, there is a constant loss by solubility of…

A: Given: The mass of lead lost by solubility is 1.55 mg. The mass percentage of lead present in 0.3514…

Q: 8. 9. 6. 7.

A: Molecules (6) and (8) are ester Molecule (7) is an ether Molecules (9) and (10) are acid halide

Q: 35 34.9689 75.77 Chlorine 37 36.9659 24.23

A: Atomic mass is the mass of an atom. Atomic mass is sum of protons and neutrons.

Q: MgBr ОН pounds nts OH (a) (b) (c) +

A:

Q: A medical laboratory test is run using a 4.8 UL blood sample. What is this volume in milliliters ?…

A: Since 1 μL = 10-3 mL Hence the volume in μL X 10-3 = volume in mL

Q: How important is identifying chemicals and Laboratory apparatuses used in an analysis?

A: You should always know your lab equipment well before you do any type of experiment because without…

Q: Why do you think it is best to use a capped vial when you determine the density of your unknown…

A: The density of any liquid is calculated by the formula, Where, m is the mass of liquid. V is the…

Q: In Paper Chromatography, when the solvent wicks up the paper and causes the separation of your…

A:

Q: Why are intensive properties useful for identifying a substance?

A: Intensive properties and extensive properties are classified as the types of physical properties of…

Q: Part A Measure and record the masses of all the metal strips you set out in front of the test tubes.

A: 1. molar mass of Magnesium is24.305 g/mol. 2. Zinc mass number of 65.39 g/mol. 3. Copper atomic mass…

Q: When we need sample preparation for analysis? use your own words to write

A: 1) Preparation is a very important step in most analytical techniques because the techniques are…

Q: The analyst would use an analytical balance during sample analysis, what would you recommend her/him…

A: Make sure  that you place the balances in an area with constant humidity and temperature. The…

Q: The ? stands for a number the student is going to calculate.)   Fill in the missing part of this…

A: The ratio which represents the relationship between two different units is known as a conversion…

Q: what solvent would you use to determine the density of zinc chloride

A: Zinc chloride is soluble in polar solvents like water. Hence, a non-polar and no reactive solvent is…

Q: 1. What is a spectrophotometer used for in a cobalt chloride solution analysis?

A:

Q: a. Ca(s) + Cd²"(aq) → Ca²*(aq) + Cd(s) b. Cu*(aq) + Fe3*(aq) → Cu?+(aq) + Fe2*(aq)

A: In this question, we want to determine the cell notation of given cell Reaction.  How we can write…

Q: List the steps in a chemical analysis.

A: Chemical analysis: The study of a chemical compound or an analyte in order to gain more information…

Q: Initial Water Volume: 12.70 mL Final Water Volume: 13.49 mL Mass of Solid: 7.11 g   Density of…

A: To solve this problem we  will first calculate the density .

Q: Reflection: In what other ways can we use percentage composition in our daily lives can you give…

A: Given we know about the daily life and percentage composition

Q: You must show calculations in to receive credit. 1. A 6.245 g sample of a hydrate has a mass loss of…

A: PART (1)Mass of the sample is 6.245g.Mass loss is 2.525g.Therefore,

Q: How can mass and volume data for an unknown sample be used to identify the unknown?

A: Mass gives the quantitative aspect of the substance i.e., how much amount of the matter is contained…

Q: Use the sample experimental data to calculate the mass of residue (BaCl2)  Mass of pan 15.110 g…

A:

Q: Describe how volumetric analysis methods are used in quantitative methods. Please provide at least…

A:

Q: What were the experimental errors that could have led to your percent error? Be specific.

A: Beer’s Law is only true for dilute solutions the exact range of solutions must be determined…

Q: What are the important considerations in reporting analytical results?

A: Analytical result : A data analysis after experiment is called analytical result.

Q: E Learning Task 2: An alloy is prepared by mixing 60g copper and 70g zinc. Find the percentage by…

A:

Q: Which of the following is not the general step in the chemical analysis? a. sampling and sample…

A: General steps in a chemical analysis Identification of the problem and formulating questions Select…

Q: Use unit analysis to show how to calculate the mass of 17.4 mL of aluminum. See the table below for…

A: Density of aluminium = 2.72 g/ml Thus the mass of 1 ml of Aluminium is = 2.72 g Then the mass of…

Q: When we need sample preparation for analysis? use your own words to explain

A: Given :  To explain a need of sample preparation for analysis.

Q: given your experience in mass determinations (Experiment 1) and with volumetric glassware…

A: Density of a substance can be calculated from mass and volume of it.  The more precise measurement…

Q: What is polarity and how is polarity related to how chromatography works?

A: In chemistry, polarity of a molecule is defined as the electric charge distribution over the atoms…

Q: What is his percent error?

A:

Q: QUESTION 3 After you complete the second step, you will be left with a clear colorless liquid. What…

A: As you have asked two questions, I will give answer to the first one.

Q: 29) -N-N=0 + NANO, + HCI

A:

Q: What information might help a chemist identify an unknown substance

A: The information which might help a chemist to identify an unknown substance is given by following :…

Q: Mass of the Empty Crucibles Mass, g TRIAL Sample 1 18.617 18.567 18.573 18.561 18.560 18.559 18.559…

A:

Q: About 0.50g of zinc metal was weighed out in a tared weighing cup using a top-loading balance. The…

A: The readability of top-loading balances is about 0.001g. Hence they are also called precision…

Q: Chaules'Law

A:

Q: When we need sample preparation for analysis? Explain.use your own words to write

A: Sample preparation is a very important part of analytical chemistry. Analytical chemistry is one of…

Q: How many standard size cookies can you make?

A: Requirements to make 10 dozens standard size cookies = 16 oz butter, 4 eggs, 3 cups flour and 4 cups…

Q: Metal Ba²+2e=Ba Cr²+2e=Cr Cr³+ + 3e Cr As + 3H+3e AsH3 Cd²+ + 2e = Cd Pb²+ + 2e = Pb Se + 2H+ 2e…

A:

Q: The best result depends on the accuracy and precision. Define precision and state the formula.

A: Precision is the closeness or repeatability of results.