In compounding a prescription, a pharmacist weighed 0.05 g of a substance on a balance insensitive to quantities smaller than 0.004 g. What was the maximum potential error in terms of percentage?

Q: Balance the following equation in standard form and determine the sum of the coefficients. FeO(s)…

A: Reaction- FeO (s) + O2 (g) →  Fe2O3 (s) Left hand side Right hand side Fe = 1 Fe = 2 O = 3 O…

Q: 3. A mixture containing only AgCl (FW 143.32) and AgBr (FW 187.77) weighs 2.000g. It is…

A: Here we are required to find the percentage of AgCl and AgBr in 2 gm of sample

Q: calculate the percentage purity of Na2CO3

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Q: Potassium permanganate in acidic solution is used to titrate a solution of copper(I) ions, with…

A: Given,23.14 g of KMnO4Volume of KMnO4 = 1000mLVolume of copper ion = 200mLThen number of moles of…

Q: a) Assuming that the coal was 81.5 % carbon by mass and that combustion was complete, calculate the…

A: Given: Part a) Amount of Carbon =81.5 % Part b) Amount of Sulfur = 4.40% Total amount of coal in an…

Q: Using grammatically correct English sentences, describethe relationship between the number 6.022 *…

A: Number of moles of a chemical compound is used to measure the amount of compound in a given mixture…

Q: Length of heating time for empty crucible and lid                                        _____10.0…

A: Given  Length of heating time for empty crucible and lid  10 min Mass of empty crucible and lid…

Q: How does the mass of 1 piece one-peso coin compare with the average mass of the coin in 2? What may…

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Q: Oxygen reacts with hydrogen to form water.  What is the sum of the coefficients for the reactants…

A: Oxygen reacts with hydrogen to form water, the balanced equation is----- 2 H2 + O2 = 2 H2O…

Q: 4. A metallurgist wants to gold-plate a thin sheet with the following dimensions: 1.5 in x 8.5 in x…

A: Given: The dimensions of the plate = 1.5 in × 8.5 in × 0.0012 in And the thickness of gold required…

Q: Oxygen is not combustible.  Is this considered a Chemical or Physical property and why?

A: Combustion is the process of burning of a compound; in which the compound reacts with excess of…

Q: Which of the following features is internal-intrinsic? A. Iron cube volume B. NaCl(s) Crystal…

A: Intrinsic features are those features which do not depend on the volume or mass or number of…

Q: 2+ The line notation, Al(s) | Al*(aq) || Co²"(aq) | Co(s), indicates that Al³* is the r Co is the…

A: We have given that  The line notation, Al(s) | Al3+ (aq) || Co2+(aq) | Co(s) indicates that A) Co is…

Q: What three types of information does a balanced chemicalequation provide? How?

A: Balanced chemical equation for a chemical reaction is the one that has same number of atoms on both…

Q: What are the potential errors that could occur when using the Kjeldahl method to determine the…

A: Kjeldahl method principle : Strong acid helps in the digestion of food and liberates nitrogen which…

Q: Suppose you wish to calculate the mass of sulfuric acid that can be obtained from an underground…

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Q: The extraction of aluminum metal from the aluminum hydroxide found in bauxite by the Hall-Héroult…

A: Given : Mass of Aluminium = 10 Kg 2Al(OH)3(s)→Al2O3(s)+3H2O(g)                       Step 1…

Q: Which of the following variables does absorbance not depend upon?   A. Molar absorptivity of the…

A:

Q: Potassium chloride is a salt substitute. It consists of potassium cations and chloride anions.…

A: 1.Element are simple  form of matter , example Na. 2.ionic compound are the compound form by cation…

Q: Complete this sentence  THe electrical conductivity of a sample will       when the size of the…

A: When a Voltage is applied to the electrode dipped intoan electrolytic solution , ions of the…

Q: Q14. For the emerging sodium-ion batteries, there are a number of cathode materials under…

A: Theoretical capacity: Qtheoretical = (nF) / (3.6*Mw) mAh g-1..........(1)  Molar mass FeOF = 90.8…

Q: An analyst performed an analysis of a sample for its calcium ions content got the following results:…

A: Accuracy means the agreement of a particular value to the true value. Hence accuracy is the measure…

Q: | 5. Calculate Medium fine steel wool has a strand diameter of 0.002 inch. If 100 g of this steel…

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Q: Explain the idea of “synergistic effects.”

A: Given :  To explain synergistic effects

Q: 2- Make a comparison between brittle and ductile materials Brittle Materials Ductile materials

A:

Q: 4. Cite two possible applications of silver nanoparticles. Explain the role of its nano-size towards…

A: A nanoparticle is a small particle that ranges between 1 to 100 nanometres in size. Undetectable by…

Q: 4 Define the following symbols: a. S d. G b. AS e. AG с. Т

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Q: /hen exposed to air, aluminum metal, Al, reacts with oxygen, O2, to produce a protective coating of…

A:

Q: In the production of printed circuit boards for the electronics industry, a 0.765 mm layer of copper…

A: Area of one board = 7.55 cm x 18 cm = 135.9 cm2.Area of 8700 board = 8700 x 135.9 cm2 = 1182330…

Q: 2. There is a need to make many 10mm holes in a rubber hose. It is not hard to punch or drill holes…

A:

Q: A substance which cannot be broken down by distillation, electrolysis or heating is most likely c. a…

A: elemental substance is the class of pure substance that can not be separated in to two or more…

Q: Flammability is a measure of how easily a substance bursts into flame, through fire. It is is a…

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Q: Andrew dissolved 10.00 grams of an iron ore sample in 5.00 L of acid to produce a stock solution.…

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Q: Ten replicate analyses of the concentration of mercury in a sample of commercial gas condensate gave…

A: Answer

Q: Suppose that in a gravimetric analysis, you forget to dry the filter crucibles before collecting…

A: Qualitative analysis is a branch of chemistry that deals with the identification of elements…

Q: Which of the following statements is incorrect? a. Safety shower would immediately be used if your…

A: Laboratory safety is very important in order to maintain a safe environment for the researchers as…

Q: Compare: capacity factor, k' I 0.18 0.16 0.14 0.12 0.1 11 0.08 0.06 0.04 0.02 0 the quantity in I is…

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Q: All of the following are properties of zinc. Which is NOT a physical property. It corrodes with…

A: In this question, we will select the statement which is not a physical property that means it is a…

Q: A chemist needs to create a series of standard Cu²+ (aq) solutions for an absorbance experiment. For…

A: Molarity = Number of moles of solute/ Volume of solution(L) M1V1 = M2V2  M1 = initial molarity  M2 =…

Q: Ag(s) + Zn" (aq) → Ag,0(aq) + Zn(s) Fill in the coefficients for the balanced overall equation. Zn2-…

A: Given reaction is a redox reaction which is balanced in basic solution. First seperate in reduction…

Q: Discuss 5 advantages and disadvantages of palm oil source of oleochemicals in Malaysia.

A: Advantages of palm oil source of oleochemicals in Malaysia. 1) Malaysia contributes about 20% to the…

Q: A student performs the Kea of Iron(III) Thiocyanate experiment, and obtains the following data set:…

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Q: I Al*8 (aq) // Mg+2(aq) / Mg(s) the amount of electrical

A: Balanced cell reaction, 2Al(s) +3 Mg2+ (aq.)-----> 3Mg(s)  + 2Al3+(aq.) E°cell = E°c - E°a     =…

Q: Whilst working in the pharmacy aseptic unit you are asked to prepare 5 litres of a solution…

A: Given; Note: 1L = 1000 mL Volume of the solution = 5 L = 5000 mL Concentration of the solution…

Q: The sulfur in an 3-tablet shape of captodiamine C21H29NS2 was converted to sulfate and determined…

A: