Chemistry Question

Q: Q.2: For the following reaction : Na2S04 (aq) + BaCl2 (aq) I BaSO4 (s) + NaCI (aq) a- Write the bala...

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Q: Which of the following atoms will form a +2 ion? A. Li B. Al C. Mg D. O E. Br

A: Atoms can either lose or gain electrons , so that it outermost valence shell has eight electrons ful...

Q: help which one is right

A:

Q: Q1\ Differences between Optical Microscope and Electron microscope Q2\ Differences between TEM and S...

A: Solution (1.) : An optical microscope is a tool used to study microbodies such as bacteria, fungus, ...

Q: Name the following ethers by IUPAC rules:

A: The IUPAC nomenclature is the method of naming the organic compound. The IUPAC stands for Internatio...

Q: Q.1: If 42.1 g of C4H10 0 react with 73.0 g of 02 according to the reaction Equation : C4H10 0 + 02 ...

A: From the balanced equation we can calculate anything related to the equation .

Q: Synthesize the following compound The product is on the left, starting material is on the right Can ...

A: The product of given reaction are produce by using the following reagent with sequence Step I : Hydr...

Q: Help

A: using this balance equation we can find out the mol produce by Cr2O3

Q: How many moles if H2SO4 do you have if you there are 1.64 x 1012 molecules of H2SO4?

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it ...

Q: Q.2: For the following reaction : Na2S04 (aq) + BaCl2 (aq) I BaSO4 (s) + NaCI (aq) a- Write the bala...

A:

Q: 1- What is the percent composition of a solution in which 480 grams of sodium chloride, NaCl, is dis...

A: Given, NaCl = 480 gram         Solution volume = 4 liter =4000mL

Q: hore total energy than the reactants, the AG will be and if the reactants have more total energy tha...

A: Delta G is given as energy of product - energy of reactant  ΔG = GProduct - Greactant 

Q: . Why does slow distillation result in better separation of two liquids than fast distillation?

A: distillation work on the principle of different boiling points for two liquids, if someone distillat...

Q: HBr `OCH3

A: The answer of following guestion is given below.

Q: Hi. How do I calculate weighted average atomic mass from isotope data?

A:

Q: Help I chose D was I right?

A: Yes, Option  D would be the right answer .

Q: Your Turn Consider the following reaction : Na, SO,(aq) + BaCl,(aq) → 2NACI(aq) + BaSO,(s) Write the...

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Q: 1.Convert (7.1x10^24) molecules of magnesium's bromide, MgBr2 to grams of magnesium bromide in scien...

A: Conversion is done on the basis of following relationship- Grams of compound = moles × molar mass of...

Q: A 1.50 g sample of a compound containing only C,H and O was burned completely. The only combustion p...

A: Empirical formula refers to the formula of a compound in which the elements are present in the simpl...

Q: (i1) Identify which of the items below are elements, compounds, heterogenous mixtures, and homogenou...

A: Elements=An element is a pure substance consisting only of atoms that all have the same numbers of p...

Q: Duty 1/0.1753 g of NaCl was dissolved in enough water to give 240 ml. Calculate the formalism of the...

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Q: Naturally occurring iodine is iodine-127. Medically, radioactive isotopes of iodine-125 and iodine-1...

A: Isotope is iodine and it's symbols is " I "  1)  53I127  2) 53I125  3) 53I120 

Q: Q.1: If 42.1 g of C4H10 0 react with 73.0 g of 02 according to the reaction Equation : C4H10 0 + 02 ...

A: Since you have posted the question with multiple subparts, we will solve only first three subparts f...

Q: The radioactive decay of Tl-206 to Pb-206 has a half-life of 4.20 min. Starting with 5.00 × 1022 ato...

A: Given: The initial number of atoms of Tl [N0]-206=5.00 × 1022 The half-life of Tl-206 atomst12= 4.20...

Q: m cold Mass of cold water (g) = 50 g Tic Initial temperature of

A: Given, mcold=50 gTic=15°Cmhot=50 gTIh=80°CTf=35°C

Q: 2

A: [ NH3 ] = 0.44 M Kb = 1.8 × 10-5  pH = ?

Q: OH HO A. triterpene B. monoterpene C. tetraterpene D. sesquiterpene E. diterpene

A: Divide total no of carbon atom in compount with 5 to get no of isoprene unit

Q: Complete the following nuclear equations, and identify X in each case.  222Rn  →  218Po  +  X  ...

A:   1.)         22286Rn  →  21884Po  +  42X   So,  42X is  α- particle.   2.)      23190Th  →  23191Pa...

Q: Why is this incorrect?

A:

Q: A 10.0 g sample of O₂ at standard temperature and pressure (STP) would occupy what volume in liters?

A: Given  10.0 g of Oxygen  At STP Temperature = 273.15K pressure = 1atm

Q: Average atomic masses listed by IUPAC are based on a study of experimental results.Bromine has two i...

A: Given The atomic mass for given two isotope are 78.9183 amu and 80.9163 amu. The given values of abu...

Q: 2) I need help with part b

A: Given: The given concentration of NH3=0.44 M Kb=1.8×10-5 If an aqueous solution of NH3 is made then ...

Q: What is the pH of a 0.040 M solution of benzoic acid (Ka = 6.3 × 10-5) at 25ºC?

A: Given : Concentration of benzoic acid i.e C6H5COOH = 0.040 M And Ka of C6H5COOH = 6.3 X 10-5  Since ...

Q: A solution containing 56 mg of a protein in 30 mL ofdistilled water exerts an osmotic pressure of 0....

A: Osmotic pressure :                           π = CRT                           π = wM x VRT         ...

Q: -69 The acid dissociation constant K, of hypobromous acid (HBrO) is 2.3x 10. Calculate the pH of a 2...

A: Consider the dissociation of hypobromous acid is as follows:                       HBrO   →     H+  ...

Q: Answer Q34 showing detailly each step to Justify your reasoning

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Q: How Many atoms are there in 1.4532 mole of copper?

A:

Q: Q3::If the solubility product of silver chloride is 1010 x 1.08 how much the volume of wash water ca...

A: The balanced chemical reaction              AgCl = Ag+ + Cl- t = teq. (1-s)      s         s   where...

Q: Answer Q8 showing detailly each step to Justify your reasoning

A: The ionization energy of the periodic element depends on the electronic configuration of the atom . 

Q: please help

A: Is possible that your base is contaminated, you can repeat the experiment with new potassium t-butox...

Q: The temperature for each solution is carried out at approximately 297 K where Kw=1.00×10−14. a) 0.6...

A: pH: It can be defined as by saying the power of hydrogen in a solution. On the basis of pH, we can d...

Q: Select the best pair of answer below, justifying the reason for your choice. 45. The line emission s...

A: The energy of the electron in the line emission spectrum of atomic hydrogen is quantized as number o...

Q: Calculate the molality of NaCl in a 500 ml 20% aqueous NaCl solution whose density is 1.148 g/mL at ...

A: given, density of Solution = 1.148 g/ml Volume of Solution = 500 mL   

Q: Directions: For each of the following predict the products, write the formula equation, and balance ...

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only. ...

Q: Chemistry Question

A: Alpha decay is defined as the kind of radioactive decay process that involves the emission of alpha ...

Q: You are doing HPLC analysis to determine the concentration of vanillin in an artificial vanilla samp...

A: The full form of HPLC is high pressure liquid chromatography or high performance liquid chromatograp...

Q: Hi, can you help me with letter f please?

A: Total number of oxygen atom = 3.39×1022 atoms

Q: Balance the chemical reaction equation P4(s) + Cl2 (g)→PC1; (g)

A: The reaction taking place is given as, => P4 (s) + Cl2 (g) -----> PCl5 (g)   

Q: Given Enzymes: amylase, lipase, lactase

A: Tha main functions of amylases is to hydrolyze the glycosidic bonds in starch molecules, converting ...

Q: Q2: Calculate The Effective Atomic Number Rule(EAN) to each following compounds [Mn2(CO)10], [Fe3(CO...

A: The Effective Atomic number is the number of electrons present around the central metal atom in the ...