A biologist wants to make 265mL of 0.02M HCl by diluting a 5M HCl stock solution. How many mL of the stock HCl solution should be used?

Q: 2. How would our experimental results change if a less polar mobile phase was used such as butanol…

A: In a reverse phase chromatography, the solid stationary phase is non-polar in nature and the liquid…

Q: 20KJ In a certain photodissociation, 4.19 × 10 of energy is absorbed. If 2 = 450. nm, many photons…

A:

Q: 2. How many distinct types of carbons exist on the compounds below? Но 3. For the compounds above,…

A: The number of different types of carbon atoms can be determined by the 13-CNMR spectroscopy. In the…

Q: ah tr ar Licie IS d suonsanb OM1asaun ƏMSUP pup u DPau om 6. This article got a huge amount of…

A: The study of arsenic was not replicated after 2011 because at that time is was thought that  if…

Q: 1. How does the organization of the periodic table help us identify possible substitutions fo…

A: The detailed solution of your question given below-- For the understanding the elements if periodic…

Q: Rose gold is a mixture of gold, copper, and silver atoms. It contains 58.3% gold, 33.5% copper, anc…

A: To solve this problem first we calculate the mass of rose gold then we calculate the mass of copper…

Q: A virus particle has an approximate volume of 5.20 x 106 nm3 and an approximate mass of 1.00 fg.…

A:

Q: 7.Draw the Lewis Structure for N. Draw the Lewis Structure for S. Why do the two ions above have the…

A: The ions given are N3- and S2-.

Q: Can you answer the questions and explain how you find the answer

A: Resonance structures of Radical is given below,

Q: The Lewis Dot Structure rule states that S=N-A. Recall that N represents the TOTAL number of valence…

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Q: CHEMICAL FLAME COLOR OBSERVATIONS NAME & FORMULA Calcium, Ca Lithium Li Sodium, Na* Strontium, S…

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Q: Question 2 You heat a 54.2 g sample of hexanes using a heater using 223.3 W of power for 10.0…

A: Given that: mass of sample = 54.2 g Power = 223.3 W Time = 10.0 s Initial temperature = 21.1 oC To…

Q: 2. How many grams of K2SO4 are there in 0.123 mole of K2SO4? (Hint: you need to calculate the molar…

A: Using molar mass of K2SO4 and mole concept we can solve this problem.

Q: What is the mass, in grams, of 22.6 milliliters of gasoline?

A: density = mass/volume  so, mass = density × volume

Q: A reaction has a constant half-life of 250 s. How long will it take for the reactant concentration…

A: Given: Reaction is having a constant half-life of 250 s. And to find the time required for the…

Q: 1. We examined how different elements combine to form compounds using two models, the Periodic Table…

A: Macromolecules are molecule with large no. of atoms and molecules combined to each other, it's…

Q: Last edit was seconds ago BIUA =明山 3 GO ... TT Lesson 11: Student Activity Sheet Please read the…

A: The discovery describe that everyone need six elements of live life i.e carbon, hydrogen, nitrogen,…

Q: b) provide a chemical equation for an acid-base reaction using benzyl alcohol and potassium…

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Q: 3.. What is the likely charge of each of the ions formed by the following atoms? As Rn In Br Mg. Ge…

A: we have to determine the likely charge on the ions formed by the given atoms

Q: Answer choices for question 1:  A B C D   Answer choices for question 2:  E F G H

A: Double bond equivalence (DBE) for molecular formula is calculated by using the following formula.DBE…

Q: d) complete a chemical equation for an oxidation reaction involving Ethanethiol.

A: Hello. Since you have posted multiple questions, the first question shall only be answered in this…

Q: What is the stereochemical relationship between the organic products of the following reaction? Br…

A: The options are as follows:

Q: 1. How does the organization of the periodic table help us identify possible substitutions for…

A:

Q: How do the presence or absence of partial charges at the molecular šcálė help explaln a liquiu 3 ADy…

A: The polar compounds have partial positive and negative charges, due to the electronegativity…

Q: 4. Some contact lens solutions use boric acid buffers to resist pH change. Over what pH range does…

A: pH=pKa +log[salt]/acid pOH=pKb + log[salt]/base boric acid has formula H3BO3, it is a weak acid with…

Q: Two samples of potassium chloride are decomposed into their constituent elements. One sample…

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Q: I'm not sure how to answer this question. I know that the first two answers are correct, but I don't…

A: The hydronium ion concentration can be calculated using ICE table as,

Q: 2. 340 mL of oxygen gas are collected by displacement of water at 33 °C and 742 torr, where the…

A: since you have asked for question 2 only, we are providing a solution for the second question only.

Q: Rank the following species in order of increasing number of valence d electrons: Pt(II), Mn(VII),…

A: Electronic configuration: It can be defined by saying that the distribution of electrons in the…

Q: A sample of gas occupies a volume of 237.5 mL at 763.2 tor and 273.2 K. What volume will the sample…

A: We can calculate  the quantities by using ideal gas equation.

Q: A new isotope is discovered that has a mass of 25 amu and 15 neutrons. What is the elemental…

A: Given that, Mass = 25 amu No. of neutron=15 Element ?

Q: 6. Calculate the masses of NaH2PO4 H20 and NazHPO, 7H20 needed to make 100.0 mL of a 0.100 M…

A: 6. Given that: volume of solution = 100 mL = 0.1 L molarity of solution = 0.1 M pH = 7.40  To…

Q: Write a balanced reaction for which the following rate relationships are true. Rate = 1 A[N205] 1…

A: The rate relationship given is,

Q: a. graph C, vs T then using excel what polynomial trendline is needed to get a fit of R? = 0.999?…

A: a) Step 1:Make a new Excel file and put the datas as shown T(K) CV(J .mol-1.K-1) 300 20.8 400…

Q: 2. Human beings take in about 550.0 liters (L) of oxygen, O2, each day by breathing. Use the Ideal…

A: The question makes use of ideal gas equation. we have been given volume, temperature and pressure.…

Q: 1. a. enantiomers A.) B.) C.) ― What is the relationship between pair of molecules below? b.…

A: Since you have asked multiple questions, with multiple sub-parts. So, we will solve the first…

Q: In a cell, the activation energy needed for a reaction to occur is likely lowered b a localized…

A: Activation energy is the minimum amount of extra energy required by a reacting molecule to get…

Q: Final Reactant Concentrations and Reaction Rates [I] [I0;] [H'] Reaction Time Rate of Reaction (From…

A:

Q: 2. A weak acid has a Ka of 3.7x106. Calculate the pH of a 0.30M solution of this acid.

A:

Q: 7. What do the study findings suggest to us about our overall question, "How should we search for…

A: For life on earth depends six elements : carbon, hydrogen, oxygen, nitrogen, phosphorus and sulfur.…

Q: Calculate the following with correct significant figures: (103.482 + 11.0+0.8) (3.29–10.0) -17 O…

A: We have to solve the equation with correct sign figs.

Q: 1. A student doing the experiment in this module extended the study of the [COCI,Pion/Co(H₂O) ion…

A: Since you have asked multiple questions, we will answer only first question for you. In order to get…

Q: Selenium tetrafluoride is produced from a reaction of elemental Se with chlorine trifluoride…

A: The given chemical reaction is as follows: 3Se(g) + 4ClF3(g) → 3SeF4(g) + 2Cl2(g)…

Q: 5. How do you think the physical properties (solubility in water conductivity, boiling & Melting…

A: in AsCl3 as have +3 oxidation state and it have one lone pair of electrons.

Q: Number of Bonds 9. Lewis Dot Diagram 2 electrons needed to complete the octet, 6 valence P expands…

A: In the above problem the given elements are- Carbon C,Hydrogen H,Nitrogen N,oxygen  O,phosphorus…