Calculate the number of Li+ ions in 3.87g Li3PO4 Li+ ions=     Calculate the grams of O in 3.87g Li3PO4 mass:   g O

Q: Determine the K, of a weak base if a 0.26 M solution of the base has a pH of 9.27 at 25°C. Kb x 10…

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Q: A chemist dissolves 460. mg of pure barium hydroxide in enough water to make up 80. ml. of solution.…

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Q: Balance the chemical equation below using the smallest possible whole number stoichiometric…

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Q: Rank the following compounds in order of increasing acidity, and explain your ranking. Br A COOH O₂N…

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Q: Calculate the volume of air required for complete combustion of 1m3 of a gaseous fuel having the…

A: Given: CO = 46%; CH4 = 10%; H2 = 40%; C2H2 = 2%; N2 = 1% and CO2 = 1%

Q: Calculate the molar mass of each of the following compounds:  9. Li2O

A: Molar mass can be defined as the mass of one mole of the substance in grams. One mole of any…

Q: Repeat your calculations using the new, adjusted reduction potentials. (with New A13+/Al being the…

A: E°cell = E°cathode - E°anode  Cathode =Reduction takes place  Anode = Oxidation takes place

Q: Calculate the molar mass of each of the following compounds:  12. Al2(SO3)3

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Q: 5. Classify each of the following elements as a (an) alkali metal, alkaline earth metal, transition…

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Q: 4. If you use 25.0 mL of the Calcium Chloride solution and an excess of Sodium Carbonate, how many…

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Q: Match the following compounds with the correct number of ¹H-NMR signals expected at room…

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Q: Determine the number of sets of equivalent protons for cis-1,2-dichlorocyclohexane. CI CI

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Q: Explain in terms of intermolecular forces why ICI has a higher melting point than Br2 Explain in…

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Q: Compare the bond length of the Carbon - Oxygen bonds in carbon dioxide , carbonate ion and acetate…

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Q: From the picture of first-order reaction, what is the differential rate law, Derivation of the…

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Q: The ammonia molecule (NH₂) has a dipole moment of 5.0 x 10-30C-m. Ammonia molecules in the gas phase…

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Q: The rate constant k for a certain reaction is measured at two different temperatures: temperature…

A: Here, we have to find the value of the activation energy (Ea) of the reaction from the given data.

Q: In Analytical Chemistry, we are conducting an Absorbance Lab using CuSO4 . 5H2O . In the lab we are…

A: The molarity of the solution is already given. So we don't need to calculate the molecular weight.…

Q: The activation energy for a reaction is 509.8 kJ. The rate constant at 50.9ºC is equal to 1.39 x…

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Q: R eq req freq [Review Topics] [References) Use the References to access important values if needed…

A: We know for a reaction to be in equilibrium the reaction quotient must be equal to equilibrium…

Q: 14. How many moles are there in 45 g of Cl₂? 15. Change 34 g of lithium to moles. 16. What is the…

A: Mole is the SI unit which is used to measure the amount of substance.  No. of moles can be…

Q: Identify the reagents necessary for all three methods. ? OH ajay O CH3CH₂ONa ? ? 1) NaOH; 2)…

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Q: At a particular temperature the following system is at equilibrium in a closed container: 2NOCI(g)…

A: At equilibrium, the rate of the forward and the reverse reaction is the same and the concentration…

Q: Question 7 of 14 How many atoms are in 2.1 mol of carbon?

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Q: 3. A reaction combines 42.5 grams of silver nitrate with 31.0 grams of potassium bromide in the…

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Q: Be sure to answer all parts. A mixture of CO2 and Kr weighs 45.8 g and exerts a pressure of 0.821…

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Q: The phase diagram shows the change in molar enthalpy as the molar volume changes.   True False

A: Phase diagram - It show phase change of a substance at different temperature and pressure.  A graph…

Q: A well insulated calorimeter containing 100 ml of water was calibrated by dissolving a known amount…

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Q: 11- Which of the following claims about alkenes' solubility is accurate? A) all alkenes are soluble…

A: Alkenes are the hydrocarbon containing alteast one double bond. They are of two types one in which…

Q: Avogadro’s Number  3. 0.0524 moles of H2O equal how many molecules of water?

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Q: Which of the following are transition metals: Cu, Sr, Cd, Au, Al, Ge, Co?

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What are ionic compounds? Why do ionic compounds not conduct electricity in the solid state?

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Q: During our Laboratory session for Organic chemistry, we were tasked to do a Bromine's test for…

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Q: Assume that a molecule absorbing a photon has two possible outcomes:  1) photolysis (bond breaking)…

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Q: From the picture of second-order reaction, what is the differential rate law, Derivation of the…

A: In a second-order reaction, the reaction rate is directly proportional to the 2nd power of the…

Q: Hydrate Original Sample (hydrate) mass (g) After heating Expected anhydrous sample mass (g) lons…

A: First of all, we have the compound Cu(NO3)2. 3H2O              Mass (hydrated) = 2 g…

Q: The activation energy for a reaction is 517.8 kJ. The rate constant at 50.9ºC is equal to 1.95 x…

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Q: How do atoms of neon-20 and neon-22 differ?

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Q: The diagram below represents a chemical reaction in which red circles represent elements X and blue…

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Q: Which of the following incorrectly describes an orbital? It is a region of high electron density.…

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Q: In the actual molecule of which this is a Lewis structure, which of the labeled distances can…

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Q: What is the difference between a rapid precipitation and recrystallization?

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Q: Chromium which has an average atomic mass of 51.9961 amu has four isotopes. The masses of its…

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Q: The following two compounds are constitutional isomers. Identify which of these is expected to be…

A: Acid is a substance which can easily release H+ ions, while base is a substance which can easily…

Q: Consider the reaction: Fe³+ (aq) +SCN- (aq) FeSCN2+ (aq) A solution is made containing an initial…

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Q: What is Kb of B? What is the pH of a 0.05 M solution of B?

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Q: How many stereocenters are there in the marine micro-algal toxin portimine? Label all stereocenters…

A: Given structure Portimine  Find stereocenters

Q: 9) Predict the major organic product in following reactions: Al 6 PCC CLO 00/10 SOCI pili TIẾN NHẬP…

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Q: 22. Which of the following compounds gives an infrared Spectrum with peaks at 3300cm (sharp Peak)…

A: IR spectroscopy is  an absorption method which is widely used in qualitative and quantitative…

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.