A 25g sample of an element had 2.895x 10^23 atoms. Identify it

Q: Hydrochloric acid (HCl) reacts with sodium carbonate (Na2CO3), forming sodium chloride (NaCl), water…

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Q: COM HOOL 74 MAI INIH MIZMA P FIL. IN 24

A: Alkene convert into epoxide then hydrolysis to give diol

Q: A chemist fills a reaction vessel with 0.969 g silver chromate (Ag₂ CrO4) solid, 0.534 M silver…

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Q: 5 i +2 CoHs CHO + NH4OẶC — C19H21 NO

A: 5. Given that, the reaction scheme is shown below We have to draw the mechanism of the reaction…

Q: Use Hess's law to calculate enthalpy change. Given the following two reactions: (1) Fe(s) + Cl₂(g)…

A: The given reaction is as follows:    Fe(s) + Cl2(g) → FeCl2(s)                    ∆H1=-341.8 kJ…

Q: A sample of pure water is saturated with PbCl2. In this saturated solution, which of the following…

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Q: A 23.9 g sample of nitrogen monoxide is injected into a 3.17–L reaction vessel that contains 28.2 g…

A: Given A 23.9 g sample of nitrogen monoxide is injected into a 3.17–L reaction vessel that contains…

Q: 1) Calculate the number of H atoms in 0.350 mol of glucose, C6H12O6 2) What is the mass in grams of…

A: Given data :  1) moles of glucose = 0.350 mol  2) mol  of glucose = 1.000 mol  molar mass of glucose…

Q: Taking the Ksp of Zn(OH)2 as 4.0 x 10^-3 and the Kf of [Zn(NH3)6] as 1.0x 10^8, determine how many…

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Q: se Table 8.4 to estimate the enthalpy change for each of the llowing reactions: 1) H₂C=O(g) + HCl(g)…

A: This question belongs to Thermochemistry. We can calculate the change in enthalpy by using the…

Q: 4. Provide the correct major product. Please include the relative stereochemistry is relevant. 1.…

A: Given that, the reactions are We have to give the major product of the above reactions.…

Q: Calculate the pH 6.3x10^-10 M NaOH

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Q: A solution is prepared by dissolving 0.17 mol of acetic acid and 0.17 mol of ammonium chloride in…

A: Since you have posted multiple questions, we will provide the solution only to the first question…

Q: 2. The following single replacement reactions are performed with their results below. Determine the…

A: The arrangement of elements either in the increasing order of standard reduction potential values or…

Q: Determine the pH change when 0.084 mol HCIO4 is added to 1.00 L of a buffer solution that is 0.342 M…

A: Answer :

Q: What characteristics must a substance possess for it to be separated from a heterogeneous mixture by…

A: In this set of answers, we have discussed the differences between simple distillation and steam…

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A: The question is based on organic synthesis. we need to synthesize the product based on reactant…

Q: 6. 3 steps CI

A: Acetals and ketals upon hydrolysis in acidic condition gives respective aldehyde and ketones.…

Q: 5. Find the pH of each mixture of acids. a. 0.115 M in HBr and 0.125 M in HCOOH b. 0.185 M in HCOOH…

A: A measure of how acidic or basic a substance or solution is. pH is measured on a scale of 0 to 14.…

Q: How i can answer this question please help me identified isotope, its atomic number, its mass…

A: To identify an isotope and determine its atomic number, mass number, and the number of protons and…

Q: A 2.00L graduated cylinder contains 1.40L of buffer solution. The density of the buffer solution is…

A: Density, mass and volume are related as Density(d)=mass(m)volume(V) Mass(m)=Density(d)×volume(V)

Q: 1.) In a 0.100M aqueous solution of a weak acid, the acid is 3.7% dissociated. What is the Ka for…

A: Note: As per the guidelines solution of 1st question has been made and for the expert solution of…

Q: Indicate at which position(s) the following electrophilic aromatic substitutions will take place and…

A: two reaction are given , we have to tell where electrophile will attack with showing resonance

Q: Express [O3] = 2.0 x 1012 molecules cm-3 as a volume mixing ratio (ppbv) at 25 ºC, 1 atm.

A: To convert the number concentration of O3 molecules (2.0 x 10¹² molecules cm⁻³) into a volume mixing…

Q: Consider the reaction: A → B. Use the below data to determine the first half-life for experiment 1.…

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Q: n the equilibrium constant lab, you measured a molar abosorptivity for Fe(SCN)2 to be 5,000 M¹, when…

A: If, in the equilibrium constant lab, you measured a molar abosorptivity for Fe(SCN)2+ to be 5,000…

Q: • x H₂O H₂O 7 8 (g) Tap here or pull up for additional resources Submit S 9 X (aq) O OH™

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Q: Q= = Be sure to answer all parts. If 2.00 mL of 0.850 M NaOH are added to 1.000 L of 0.650 M CaCl2,…

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Q: A reaction proceeds according to the following equation: 3 A+4B 2 C + D Question 1 of 5 - + What is…

A: Given Rate of consumption of A = 0.530 Ms-1

Q: CIOH140 Problem 12 3 ppm, 8 1 6

A: The question is based on the concept of organic spectroscopy. we need to analyse,  interpret the…

Q: Predict the products from crossed Claisen condensation of the following pairs of esters. Indicate…

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Q: Calculate the formula mass of Li3CO3?

A: Since, Formula mass of the compound is the sum of molar mass of each atom present in the molecule.…

Q: Consider the formation of phosgene: CO(g) + Cl₂(g) = COCl₂(g) Into a sealed 1.50 L flask, chemist…

A: Given reversible reaction is  CO(g) + Cl2(g) <====> COCl2(g) Moles of Phosgene gas placed in…

Q: When comparing the structures of aspirin and acetaminophen, why can acetaminophen exist in a liquid…

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Q: A student uses a burette as the one shown here. They recorded the initial reading of the burette as…

A: The number of moles (n) of a solute present in V mL of C (M) solution is calculated using the…

Q: Y Part A Identity pairs of coupled protons in the compound whose COSY spectrum is shown in the…

A: Given that, a 1H-NMR spectrum of the below given compound We have to tell about the splitting of…

Q: Which of these pairs of atoms are isotopes? Atom A: 13 protons, 12 neutrons and 12 electrons. Atom…

A: Definition of isotopes =>  Isotopes are those whose atomic number is same (means number of proton…

Q: After a 5.000-g sample of concrete was dissolved, the resulting solution was found to contain 0.229g…

A: Concentration terms can be calculated in different methods such as mass by mass concentration  Mass…

Q: 1. What type of product was formed in A.1.a based on the color of the litmus aper?

A: The compounds which turn blue litmus red are called acids. They taste sour and have a pH lower than…

Q: Suppose 9.07 g of potassium acetate is dissolved in 50. mL of a 0.70 M aqueous solution of sodium…

A: 9.07 g of potassium acetate is dissolved in 50 mL of 0.70 M aqueous solution of sodium chromate.We…

Q: Calculate the pH. 2.4x10^-11 M HI

A: pH of a solution is the measure of acidic pr basic nature of a solution.  pH = –log [H+]

Q: Write the formula of the conjugate acid of CH3CO₂.

A: A conjugate acid is a species that is formed when a base accepts a proton (H+ ion). In the case of…

Q: synthesis OH NE1₂

A: To write the synthesis reaction for the following:

Q: Which of the highlighted chemical bonds in the molecules below is longest? Shortest? In between?…

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Q: 32. What are four reasons an enzyme works better than an organic catalyst. On the following energy…

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Q: What causes the formation of the red precipitate in Silver Nitrate and Potassium Chromate Reaction?…

A: The red precipitate that forms in the reaction between silver nitrate and potassium chromate is due…

Q: A 5.10 mLmL sample of an H3PO4 solution of unknown concentration is titrated with a 1.100×10−2…

A: The balanced chemical equation for the reaction between H3PO4 and NaOH is: H3PO4 + 3NaOH → Na3PO4 +…

Q: 2. Calculate the enthalpy change of the reaction that produces carbon monoxide by treating CO2 (g)…

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Q: Predict which of the following liquids has the highest enthalpy of vaporization. O H₂ Te O H₂Se PHẢI…

A: Enthalpy of vaporization is increased with increasing boiling point  and boiling point increased…

Q: 2. Which one of the following densities is expected to belong to 17% NaCl? ...:) a) 1.5489 g/ml b)…

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Group 14 Elements

The following elements come under group 14 of the periodic table.