Zinc Oxide is a substance found in creams that are used to treat minor skin irritations such as diaper rash, burns and cuts. It forms when solid zinc reacts with oxygen gas according to the balanced equation below: 2Zn + O2 --> 2ZnO If 358.5 grams of ZnO is required to produce 1 tube of diaper rash cream, how many grams of O2 would be needed to produce each tube?

Q: The table below describes a procedure in preparing standard solutions of a protein sample with diffe...

A: Given data:

Q: Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of ...

A:

Q: Select the functional group that is present in the following molecule (select best answer). O Alkene...

A: In organic chemistry, the hydrocarbon containing carbon-carbon single bond, double bond and triple b...

Q: 7. In an atom, the charge of the dense fraction is similar to that of alpha particles.

A: The answer is as follows:  

Q: Flame test is an example of whatb type of atomic spectroscopy? Emmsion Absorption Fluorescence Phosp...

A:

Q: 62. Fructose is a very sweet natural sugar that is present in honey, fruits. and fruit juices. It ha...

A: As per bartleyby guidelines i answered only first question so please don't mind .Thanks in advance. 

Q: Mercy is experiencing a fever. Upon taking her temperature, it was found out the she has a temperatu...

A: Hence 3rd option is correct that is 1.43

Q: A 0.32 g soil sample was digested and diluted to 481-mL. The diluted sample was analyzed for Zn by A...

A: We are authorised to solve only one question at a time. Please post rest of the questions separately...

Q: Which of the following best describes what occurs at absolute zero? A. Water begins to freeze. B. Mo...

A: As we know tha absolute zero which  has the   temperature of 0 K or - 273.15 °C . It is Also known a...

Q: Arrange the molecules according to decreasing molecular polarity. A. I, II, III, IV B. IV, III, II...

A:

Q: Give the appropriate reagents for each of the following synthetic conversions......?

A: Reaction 1 , 2, 

Q: Give an example of how to convert a mg/L solution extract from a soil to mol/kg solid. (show dimensi...

A: The answer is as follows:  

Q: 3. What can you determine about

A:

Q: Cyclic esters and amides are called lactones and lactams, respectively. These compounds are classifi...

A: classification of lactones and lactams

Q: What is commonly determined using Atomic Spectroscopy? Bodn energy Elemental composition Concentrati...

A:

Q: pOH

A:

Q: Below, write the balanced chemical equation for the reaction you observed (including state). If a p...

A:

Q: How to calculate grams of aluminum chloride using 2AI + 6HCI -> 2AICI3 + 3 H2 formed with 135 g of A...

A:

Q: It is process in which atoms undergoes  an increase in oxidation number in called? Select one: a. R...

A:

Q: j) k) 1) cyclohexyl methyl ketone to 2-cyclohexyl-1-bromoethane ethanol to 1-bromobutane (using only...

A: Given,  j) cyclohexyl methyl ketone to 2-cyclohexyl-1-bromoethane k) ethanol to 1-bromobutane (using...

Q: 14.46 Draw structural formulas for the products of the following hydrolysis reactions: OCH,CH, OCH,C...

A:

Q: (2 LER SINGH Screen. 15 Calculate the reduction potential for the electrode Sn2/Sn (a = 0.01M) at 25...

A:

Q: Give systematic names for the compounds a.) b.) and c.) please

A: The IUPAC name of the compound can be written on the basis of the number of carbon atoms in the main...

Q: You want to make a solution of loading dye with a final concentration of 0.35% bromophenol blue, 0.1...

A: Part 1 0.35 % Bromophenol blue = 0.35% * 60 ml = 0.21 ml = 0.21 grams   0.15 % Xylene Cyanol = 0.15%...

Q: 100 95 90 85 80 75 70 4000 3000 2000 1000 Wavenumbers (cm) -1030 -1134 -1373 -1462 1712 -2877 -2962 ...

A: The IR spectra given here belongs to 4-Heptanone.

Q: In experiments on the decomposition of azomethane, CH3NNCH3(g) → C6H6(g) + N2(g) the following...

A:

Q: Iodine-131 is used in the diagnosis and treatment of thy- roid disease and has a half-life of 8.1 da...

A: Given data: The half-life of iodine-131 = 8.1 days The initial amount of the sample= 10 μg

Q: 11) Predict the products of the following: CH3 OCH2ČHCH3 (a) CH2OH (b) Poriodinano HBr (c) CH3 0 (d)...

A: The given reactions are well examples of oxidation by mild agent, selective reduction and nucleophil...

Q: Question 9 Each subsatnce absorbs or emit unoque level & quantities of energy/ e.m.r. O True O False

A:

Q: Sodium carbonate is a white powder used in the manufacture of glass. When hydrochloric is added to a...

A:

Q: What would be a better solvent for hydrochloric acid: phosphorus pentafluoride or butanoic acid? Exp...

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

Q: 4. Delo W snows a spectrum Of nen IsSOIVed in Assign each peak to one of the carbons in acetaminophe...

A: The position of peaks in 13C for the given molecules mainly for the carbon atoms in aromatic unit he...

Q: Calculate the maximum work that can be obtained from the Daniell cell Zn/Zn 2* (aq)// Cu2+/ Cu given...

A:

Q: What type of alcohol is produced from the reaction of carboxylic acid with Grignard reagent?

A: Given, When the reaction of carboxylic acid with Grignard reagent is produced:

Q: Use your integrated rate equation to calculate the amount of crystal violet that would remain after ...

A:

Q: LOME ,个 OMe ÇN

A:

Q: How many grams of metal are deposited at the cathode by the passage of 12.40 A of current for 90 ele...

A: Here we have to determine the mass of chromium and aurum deposited at cathode by passing 12.40 A of ...

Q: 3. In the heteronuclear diatomic molecules energy levels (MO) shifts are different from those of hom...

A: The answer is

Q: repression of a eukaryotic gene by an RNA be more efficient than repression

A: In this question we have to choose correct option of a repression pa a eukaryotic gene by an RNA be ...

Q: KHC8H4O4 function as monoprotic acid. If 1.46 grams of the sample of impure KHC8H4O4 requires 34. 3 ...

A: Given Potassium hydrogen phthalate is a monoprotic acid

Q: Br NACN (2.5 ermie. n) Br NaNH2 (2eriv ) heat Br Br

A:

Q: Change of litmus paper from blue to red

A: This is a multiparts question.According to the guidelines, in multiparts question, we can solve only...

Q: NO + NAOH → NaNO2 + H20 + N20 45 grams of nitrogen monoxide (NO) react with an excess of sodium hydr...

A: The reaction given is, => NO + NaOH → NaNO2 + H2O + N2O Given: Mass of NO reacting = 45 g. And ma...

Q: A mixture of 0.20M acetic acid and 0.30M sodium acetate is given. Calculate the pH of the medium if ...

A: A. Following components are given in the equation: Concentration of acetic acid (proton donor) = 0.2...

Q: Problem 1 Claim: What functional group is attached to the acetic acid? Write your answer in one (1) ...

A:

Q: Why is this Beckmann rearrangemnt useful for the synthesis of acetaminophen?

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

Q: 10) What alcohols would give the ff oxidation products? (b) CH3 CH3CHCHO (a).

A:

Q: Write the IUPAC name for the compound below. Be sure to use correct punctuation. Keep the informatio...

A: The naming of organic compounds can be done with help of IUPAC as recommended by international union...

Q: he initial concentration or

A:

Q: Henry's Law describes the solubility of a gas in a liquid. Rank the following gases in order of incr...

A:

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".