Experiment 7 Write Up

4.Porosity is a measure of the void or empty spaces in a material and is a fraction of the volume of voids over the total volume. The density of the solid material used to create 11 pieces of 0.63 cm diameter and 1.11 cm height cylindrical beads is determined to be 1.71 g/ml. These beads were then placed in a flask and was filled to the 49 mL mark with a salt solution. The total weight measured of the beads and the salt solution was 56.78 g. Upon further inspection, it was found that manufacturing defects caused the measured porosity of the beads to be at 29%. Assuming that the solution was able to fully fill the empty spaces inside the beads, calculate the density of the salt solution. Show your solutions Round your answer to 2 decimal places, 5. A chocolate manufacturing plant produces chocolate coated macadamia nuts. One specific batch of chocolates weighed an average of 4.55 g for each piece. It was found out that the macadamia nuts used in the batch had three total defects wherein…

Basic Analytical Chemistry

The typical grade of Pine Point ore is 3% for Pb, and 7% for Zn. Suppose the sample pictured in the previous question is 13.6 kg in weight. Estimate the masses of Pb and Zn (in g) contained in the sample.  Pb: Answer g Zn: Answer g   Looking for the "Answers" Thank You!

Suppose that in a gravimetric analysis, you forget to dry the filter crucibles before collecting precipitate. After filtering the product, you dry the product and crucible thoroughly before weighing them. Is the apparent mass of product always high or always low? Is the error in mass systematic or random?

B) Find the normality of a solution that can be made by dissolving 2.8 g. of CaCl, in 250 ml of water. (Atomic weights for Ca is 20 and for Cl is 35) C) A compound of iron and oxygen is analyzed and found to contain 69.94% iron and 30.06% oxygen. Find the empirical formula of the compound. (Where the atomic weight of O is 16 and for Fe is 55.85).

Mixtures and compounds vary in composition with the latter having a 1) compound. The components of a mixture can be separated by 2) separated by 3). ratio of masses of each of the atom in the means while components of a compound can only be method.

Please explain, give correct answer and typed answer only, no copy paste

Ma X ATM HOMEWO X #5112480241329813180832311&eISBN=9781305862883&id=1707785907&snapshotid=33... D21 Grades - X G when doe X References Submit Answer MindTap x G Match ea X Use the References to access important values if needed for this question. Under certain conditions, the substance hydrobromic acid can be broken down to form hydrogen and bromine. ervation of Mass: Macroscopic: This is group attempt 1 of 10 Autosaved at 7:17 PM ☆ If 22.3 grams of hydrobromic acid react to form 0.3 grams of hydrogen, how many grams of bromine must simultaneously be formed? grams bromine Ch.2: Ato- Q Search Regenerat

1. A candle is placed on one pan of a balance, and an equal weight is placed on the other pan. What would happen if you lit up the candle and waited for a while? Suppose the candle was placed in a large, sealed jar that allowed it to burn for several minutes before running out of oxygen. The candle and jar are balanced by an equal weight. In this situation, what would happen if you lit up the candle and waited?

part b pls!

In setting up this experiment, a student noticed that a bubble of air leaked into the graduated cylinder when it was inverted in the water bath. What effect would this have on the measured volume of hydrogen gas? Would the calculated molar volume of hydrogen gas be too high or too low as a result of this error? Explain. 2. A student noticed that the magnesium ribbon appeared to be oxidized—the metal surface was black and dull rather than silver and shiny. What effect would the oxidized magnesium ribbon have on the measured volume of hydrogen gas? Would the calculated molar volume of hydrogen be too high or too low as a result of this error? Explain.c

A newly discovered element named cameroonium has the symbol Cm. What is oxidation number of cameroonium in the acid H3CMO3? О а. 2 O b. 6 О с. 4 O d. 1 O e. 3 O f. 5 A newly discovered element called mexicoum has the symbol Mx. Mexicoum is found in the following anions: Mx mexicide MxO3 mexicite MxO4 mexicate What is the formula of mexicous acid? О а. НЗМх O b. H3M×O4 О с. НМхОд O d. HM×O3 O e. H2M×O4 O f. HMx O g. H2M×O3

After heating 2.000 g of MgSO4.7H2O to constant mass, the remaining residue in the crucible weighs 0.978  g. Using the data above , calculate the mass of water lost. After heating 2.000 g of MgSO4.7H2O to constant mass, the remaining residue in the crucible weighs 0.978  g. Using the data above , calculate the mass percent of water in the hydrate. 16 AND 17 PLEASE

From the following formula, calculate the amount, in grams, of Hydrophilic ointment required to prepare 60 grams of the ointment:           Precipitated sulfur . . . . . . . . 10 g           Salicylic acid . . . . . . . . . . . . . 2 g           Hydrophilic ointment . . . . .   88 g   a 1.2 g   b 6.0 g   c 30 g   d 52.8 g   e 140.8 g

Suppose 71.3 g of iron(11) bromide is dissolved in 350. mL of a 0.80 M aqueous solution of silver nitrate. Calculate the final molarity of bromide anion in the solution. You can assume the volume of the solution doesn't change when the iron (II) bromide is dissolved in it. Microsoft C tab Be sure your answer has the correct number of significant digits. W W Microsoft Microsoft 6.52.210... s lock esc control M I Don't Know Q A 2 option Z 2 Submit 8,983 W S 769 # 3 X command E D X DEC 10 $ 4 C R Ś LL do 40 % 5 V T G tv () > ♫ Y B & 7 H Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility U N * 00 8 J ZA 1 M K O L H P 1. command ** W L < t ? option C AF h tral 1

Your crucible has a mass of 30.074 g when empty, and does not change upon heating. You add some solid iron and then weigh the crucible and iron to be 32.860 g together. You then burn the iron in the presence of oxygen following the procedure in the handout. Assume that there are no contaminates and all of the iron is converted to iron oxide. The final mass of the crucible and iron oxide is 33.961 g, which does not change upon heating. The unrounded empirical formula obtained from these measurements would be FeOX, where X is a decimal type number (not necessarily a whole number). Give the value of X in the blank below in decimal format with the correct number of significant figures.Answer: ________

About Sampling, tick only the incorrect alternative(s). Choose one or more: A) Identifying the nature of a substance present in an unknown sample is called qualitative analysis. The process of measuring how much a constituent is present in a substance is called quantitative analysis. B) A type of error that is known due to procedures that cause a measure to be too large or too small is called a random error, such as reading a scale. C) Sample preparation is the process in which a representative sample is converted into a form suitable for chemical analysis. This usually means dissolving the sample. For a sample with low analyte concentration it may need to be diluted before being analyzed. D) Sampling is the process used to collect a representative sample for analysis. As real abnormals, as regulators are used in real experiments, they also typically prepare some degree of sample preparation to remove substances that do not interfere with the analysis of the desired analyte and…

Discuss at least two examples of some primary challenges of gravimetric analysis such as why it is preferred to other methods of chemical analysis with specific examples including chemical reaction equations.

A powder company is hiring you as an intern researcher. Currently they are using a standard powder for their application and, according to the manufacturer specification, one sphere particle of 10 microns in radius has 2.03x1014 atoms A group of R&D engineers claim that the performance of the powder will improve only if there are four times the number of atoms in each 10-micron radius particle compared to the current standard powder, They proposed nickel (Ni) as an alternative material. It has the FCC crystal structure and atomic radius of 0.149 nm. They asked you to prove or disprove their claim. Assume a single perfect crystal in the particle for both the standard and the alternative materials. Hints: • This problem can be solved in two different ways, pick one (or try both to check your answer if you have time). You need to work on the alternative material, then compare the final value with the proposed claim. • (1) a particle is a sphere, (2) an atom is a sphere, (3) a unit cell is…

1)A solution of Na2CO3 is prepared by dissolving 0.511 g of the solid in approximately 30 mL of water.  How many moles of Na2CO3 does this solution contain?Express your answer to the correct number of significant figures.  2)Suppose the Na2CO3  solution described in Question 1 is added to a solution that contains excess CaCl2?  What is the maximum number of moles of solid CaCO3 that can form in the resulting precipitation reaction?

If the crucible originally weighs 3.715 g and 2.000 g of hydrate are added to it, what is the weight of the water that is lost if the final weight of the crucible and anhydrous salt is 5.384? Do not include units and assume three decimal places for all numbers. Remember to include the zero before the decimal if the number is less than one.

answer it

Barium  +  Aluminum nitrate  =   ANSWER IN WORDS ONLY!!!