What will happen to the sample size if the percentage error becomes lower e.g. 5% instead of 10%? Explain how the sample will best represent the population.

Q: radiation having a wavelength of 0.0711 nm was used. A) Determine whether this metal's crystal struc...

A: all details are shown below.  

Q: A helium-filled weather balloon has a volume of 858 L at 15.9°C and 754 mmHg. It is released and ris...

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Q: Why is malonic acid a diprotic acid? Please explain using the two ionization equations using chemica...

A: Molecular formula of malonic acid is HOOCCH2COOH

Q: What is the change in internal energy for a system that performs 213 kJ of work on its surroundings ...

A: Given, System performs 213 KJ of work on its surrounding And system loses 79 KJ of heat in the proce...

Q: Jamel is to receive Cleocin 275 mg IV for 6.00 hr. The concentration of the solution is 5.00 mg/mL. ...

A: Given :-  Amount/mass of drug = 275 mg  Concentration of solution = 5.00 mg/mL  To calculate :-  Vol...

Q: 3H2SO4 (aq) + 2Al(s).  ---->  Al2(SO4)3 (aq) + 3H2 (g)    DeltaH = - 1055kJ a. What is the enthalpy...

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly repos...

Q: 3. At 298 K, the EMF of the cell shown below is +0.84 V. Pt(s) Fe"(aq, a = 1), Fe³*(aq, a = 1)|| Ce*...

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Q: What is the correct hybridization for the oxygen atom in the following molecule: CH3CH2CH2OH ? sp3 O...

A: Hybridization of oxygen in propanol:

Q: 5. Propose a synthesis plan for the following molecules. Mechanisms will not be graded for this sect...

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Q: Calculate the number of moles of NaCl contained in 3.5L of a 4.2M solution

A: Given that, Molarity= 4.2 M  Volume= 3.5 L  Then,      

Q: hich of the following statements is true for real gases? Pick those that apply. The volume occupied...

A: Given : We have to tell the true statement regarding real gas.

Q: Part A Given the following reaction at 298 K: 2 H2S(g) + SO2(9) → Ss (s) + 2 H2O(g) Calculate A,G un...

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Q: [N] H2 initial rate of reaction 0.171M 1.80M 18.0M/s 0.171M 0.343 M 0.654 M/s 0.425 M 1.80M 111. M/s...

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Q: Compute for what is asked in the following problems. Show your complete solution and highlight or en...

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Q: If I have a 7M HCl solution, how many mL are needed from the stock solution to prepare 98 mL of a 4M...

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Q: Which of the following statements is/are true about the Lewis bond theory? (a) It explains the stabi...

A: Lewis’s structure: Lewis’s bonding theory is based on the octet rule. The Lewis structure is a simpl...

Q: Suppose the reaction between nitric oxide and oxygen proceeds by the following mechanism: step eleme...

A:

Q: Using the equations 2 Fe (s) + 3 Cl, (g) → 2 FeCl, (s) AH° = -800.0 kJ/mol Si(s) + 2 CI, (g) → SICI,...

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Q: As what type of molecule would you classify ceramide? Explain your reasoning.

A: To explain: what type of molecule would you classify as ceramide?  

Q: Draw one of the two enantiomers of the major product from this reaction. Use wedge and dash bonds to...

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Q: Please answer with detailed mechanism, with all steps otherwise I'll downvote

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Q: 1. Metals are bonded by metallic bond, that is protons in a sea of electrons which give them their c...

A: Given:  

Q: С. B. :01 :CI;

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Q: A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor pr...

A: Given :-  vapor pressure of solution = 248 torr  vapor pressure of pure hexane = 151 torr  vapor pre...

Q: What type of transition is induced by the electromagnetic radiation absorbed these substances? 60 2....

A: A question based on UV and visible spectrum that is to be accomplished.

Q: Draw the major product of this reaction. Ignore inorganic byproducts, methanal (H2CO) or CO2. 1. KMN...

A: Alkenes react with alkaline KMnO4 followed by acidification to form the oxidised product. These can ...

Q: Write the rate law for the following elementary reaction: H,(g) + 21(g) – 2 HI(g) %3D Use k, to stan...

A: For elementary reactions, the reaction orders coincide with the stoichiometric coefficients. Thus th...

Q: Complete the following sentence by typing a number in each of the answer boxes. HO Not considering s...

A: Here, we have to find the number of signals that the given compound would show in 1H NMR and 13C NMR...

Q: the given compound and give its structure.

A: In this question we have to explain the compound and structure that is given in spectrum.

Q: The molecule PF3 is polar. Select the IMF(s) that it can participate in.

A: Intermolecular forces present in PF3

Q: Part A Given the following reaction at 298 K: 2 H2S(g) + SO2(g) → S8 (s) + 2 H20(9) Calculate A,G un...

A: Note : more negative value of free energy change the more spontaneous reaction is.                  ...

Q: Would you expect a change in the frequency for the ester stretch between starting material and produ...

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Q: Which of the following isomers is more soluble in water: diethyl ether (CH3CH2OCH2CH3) or butan-1-ol...

A: The solubility of a compound depends on the nature of the solute and the solvent. If the nature of b...

Q: Fill in the missing information: atom or ion? check all that apply number of number of protons symbo...

A: for a neutral atom, number of protons are equal to the number of electrons.  atomic number of an ion...

Q: D decreases

A: As atoms comes closer to form bond, then stability of molecule increases,  Therefore potential energ...

Q: The system (molecule) is most stable when the potential energy reach a maximum value a minimum value...

A: Given : We have to tell what happens to potential energy.

Q: Quntien 1 Using pka valves, ladicate the position of equilibeiam for eencticns aband e.

A: Pka is -log(Ka); Higher Ka,lower Pka. Ka will high when dissociation is easy.

Q: Give the relationship between pairs A and C below. The possible relationship are: "same compound", "...

A: A. Both the structures are "constitutional isomers" as both have same no. of carbon atoms i.e. have ...

Q: Exactly 3.5 moles of N204 is placed in an empty 2.0-L container and allowed to reach equilibrium des...

A: Determine equilibrium constant of the given reaction--

Q: Calculate how much 1500 µg/dL stock solution is needed to make 50.00 mL a 300 ug/dL solution. Answer...

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the mole of solute...

Q: entify the appropriate technique(s) for High performance liquid chromatography PLC) method(s)? Liqui...

A: High-performance liquid chromatography (HPLC) is an important analytical method which is  commonly u...

Q: Based on Valence Bond Theory, what happens when two atomic orbitals overlap? * O A single molecular ...

A: The 4th option is correct that is : The two atomic orbitals share a common region in space. Reason :...

Q: Normal No Spacing Heading A v Paragraph Styles 17. What temperature conditions are necessary for the...

A: For decaboxylation there must be formation of six member cyclic transition state .

Q: What is the enthalpy of the reaction P406 (s) + 202(g)→P4010(s), given a) P4(s) + 302(g)→P406 AH = -...

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Q: a) What is the {H*} activity if the pH measured in the lab with a pH meter is 12 (in DecExp)? (5 sec...

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Q: Carbon disulfide and oxygen react to form carbon dioxide and sulfur dioxide, like this: cs,(e)+30,(2...

A: The given reaction:  CS2(g) + 3O2(g) --------> CO2(g) + SO2(g)    K = (Pco2)*(Pso2)/(Pcs2)*(Po2)3...

Q: Select which of the following is not a feature of carrier gas used in gas chromatography? A. It must...

A:

Q: The hydronium ion concentration in a solution of an unknown weak acid is 5.77 x 1011. What is the pK...

A: Pka value is depends upon concentration of H+ ions in the solution. 

Q: please calculate Pka value

A:

Q: 1-Propose a reasonable biosynthesis of B-eudesmol from Farnesylpyrophosphate B-Eudesmol

A: