An alloy contains 78.7% zinc by mass. If a sample has a total mass of 230 grams, how many grams of zinc are present (use correct sig. figs)?_ SHOW WORK BELOW!

Q: Calculate the activity of the bromide ion in a solution that is 0.050M KBr, 0.050M NaBr, and 0.050M…

A:

Q: Owen Some Statement Choose perfect for their (i) curhat would be the internat reaction temperature…

A:

Q: The ideal gas constant R is: R = 8.314 J / K*mol What is the value of R expressed in units of Pa L…

A:

Q: 11. What is the relationship between these two molecules? Are they enantiomers, diastereomers, or…

A: In the first molecule (left side), two -OH group remain in same side and one -OH group remain in…

Q: 3. 1-bromo-2-methylpropane + t-BuO K in t-BuOH à ? 4. Br 5. Y OH EtOH, EtONa heat 85% H₂PO4 heat 6.…

A: According to the bartleby guidelines for the multiple questions I can solve only first three. So I'm…

Q: If PV = nRT, then solve for T.

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

Q: (ii)

A:

Q: 1a. If the mole fraction of cyclohexane in your mixture was 0.95, calculate the vapor pressure of…

A:

Q: Plots A and B show enzyme kinetics data in the absence and presence of inhibitor. Which response…

A: A question based on kinetics of reactions in solution that is to be accomplished.

Q: a) b) 4. Assign the absolute configuration of all molecules. Draw the most stable conformer in…

A: Here priority order is Cl>F>carbon branch  of other numbering carbon>H. First priority…

Q: There are three sets of sketches below, showing the same pure molecular compound (carbon monoxide,…

A: A question based on matter that is to be accomplished.

Q: 300 НО: V НО OH Glycosidic linkage 2' Carbon 3 Carbon 3' Carbon 4 Carbon Position where ribose and…

A: Let us FIRST discuss the structures of given compounds and then answer the questions.

Q: Draw a mechanism for the following reaction: OH A reaction scheme. OH OH O -CH3 Draw all missing…

A:

Q: OH PBr3 Et₂0 Nal NaBH4 EtOH CH₂SO₂CI pyridine Mg THF HO OH Et₂0 H₂SO4 80 °C

A: Organic transformations

Q: What is the mass (grams) of 6.52 x 1018 atoms of gold (Au)?

A: Given that, 6.52×1018 atoms of gold. We have to calculate the mass of that gold. Concept:  We know…

Q: Give the IUPAC names for the following compounds. 1. 2. H3C-C(CH3)2CH=C-CH3 H Br 3. OH Br 4. CI CI

A: Rule of IUPAC-1) Longest chain as parent chain.2) Numbering start from those side where more prior…

Q: A 20 mM solution of ethanol is diluted 1 in 8. The diluted ethanol solution was used for an…

A: Volume of alcohol dehydrogenase in first experiment, V1 = 20 μL Initial velocity in first…

Q: Which element, sodium or magnesium, must have an electron affinity closer to zero? State your…

A: Which element, sodium or magnesium, must have an electron affinity closer to zero?

Q: Using the periodic table, write the electron configuration and orbital diagram of each of the…

A: First, check the atomic number for all elements and then write down its electronic configuration and…

Q: 3. How many cups of chili powder will you need? Three teaspoons (tsp) equal one tablespoon (TBS) and…

A:

Q: What is the connection of HOMO LUMO and pi to pi* include reference website link for my further…

A: When two atomic orbitals of comparable energy are combined with each other it forms molecular…

Q: a) (3R,4S)-4-chloro-2,3,6-trimethylheptane b) cyclopropylcyclobutane c)…

A: The structures of given compounds would be drawn using the IUPAC nomenclature rules.

Q: 543.7 g + 568.45627 ml

A: We need to add two numbers with different significant figures.  In addition or subtraction of…

Q: Why is there a need to adjust the acid concentration of Group II cations before saturation with H2S?

A:

Q: Three perfect gases, all at a temperature of 25°C, are placed into a box with sides of length 1m,…

A:

Q: A salt containing an "unknown" anion is analyzed using the three Classification tests. Use the data…

A: 1) we have to identify the anion by analysing TestA, Test B and Test C  Note: According to Q&A…

Q: Jewellers often make decorative items by electroplating leaves and flowers with copper. What problem…

A: Electroplating involves using electric current to coat an electrode in dissolved metal ions.…

Q: 2,3-Dimethylbutane 5,5-Diethyl-2,2,4,4-tetramethyloctane 3-Ethyl-3-methylhexane…

A:

Q: what is the mechanism of amine and aldehydes in methanol? why does the reaction occur by refluxing?

A: Organic reactions are those in which organic reactant react to form organic compounds.

Q: 2. (a) How can Limonene be prepar from 1-(4-methylcyclohex-3-enyl) ethanone and triphenylphosphine…

A:

Q: A sprinter set a high school record in track and field, running 200.0 m in 20.5 s. what is the…

A:

Q: Tag all the sp2 hybridized carbon atoms in this molecule. If there are none, please check the box…

A:

Q: What is the pH) at 25° C of the solution obtained by dissolving a 5.00-grain tablet of aspirin…

A:

Q: B. Give a reasonable synthesis pathway for the transformation below. You may use any organic and…

A:

Q: Bromocyclohexane reacts with CN with ethyl alcohol as the solvent, will this reaction follow SN1 or…

A: SN1 reaction is unimolecular  nucleophilic substitution reaction  which is favors in polar solvents.…

Q: pH is best described as the concentration of which body fluid ions?

A: Given, pH is best described as the concentration of which body fluid ions = ? Note: Alkalinity and…

Q: 2. What is meant by: Facile reversibility of formation and decomposition reactions? 3. Why does…

A: Facile reversiblity of formation and decomposition means a reaction in which formation of compound…

Q: 4) How many moles of cesium are in 66.45 g Cs? 5) What is the mass (grams) of 2500. carbon atoms? 6)…

A:

Q: 11. When a 1.0 g of material X (molar mass = 40 g/mol) was dissolved in beaker containing 50.0 g of…

A: Given: Mass of X = 1 g Molar mass of X = 40 g/mol

Q: A titration experiment is set up where 87.97 mL of 0.8704 M hypochlorous acid, HClO, is titrated…

A:

Q: Part Ⅱ 요? Incorrect 1 correct 1 Not possible -상 yayou g 요 잇

A:

Q: 5. (a) Define the following terms: (i) Director Gül Order parameter

A: Liquid crystal may be defined as the state of matter that lies between solid and liquid. So they…

Q: A. Directions: Below are examples of properties. Identify whether the trait is Physical Property,…

A: Chemical properties: These are the properties that can be observed or measured when a substance…

Q: 1. Indicate the geometry of each carbon atom (i.e., linear, trigonal planar, tetrahedral) H :O: HH 1…

A:

Q: 12. Which of the following elements doesn't belong in the group with regards to how common they are…

A: When an element has a specific role indispensable to sustain life in a living organism, is called…

Q: The bottle contains 15 grams of Ni powder Macroscopic or Microscopic?

A: If a object of our interest can be seen with the naked eye, then the constituting substance is…

Q: An organic solvent with a molar mass of 56.45 g/mol have a normal boiling point of 45.0 °C and a…

A: According to the question we have, Mass of liquid is given by = 24.0 g Specific heat capacity of the…

Q: 1. You took out your best bread knife and used it to slice your bread. After using it, you washed it…

A: 1) Chemical change Because in presence of oxygen and moisture, rust arises on knife.  Rust generated…

Q: 10. What is the major 1,2-addition product of 2-methyl-1,3- butadiene when reacted with HCl? B) What…

A: The concept of given question is taken from Organic chemistry. The detailed mechanism is done on…

Q: |DX| Pressure (not to scale) Temperature (not to scale) a. identify the states present at points a,…

A: INTRODUCTION: The P–T phase diagram of a sample of which is shown in the diagram displays stability…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".