Calculate the formula of a compound having the following composition: Na = 27.38 %, H = 1.19 %, C = 14.29 %, and O = 57.14 %

Q: 64584@q.164 e. What is the approximate molar mass of the metal? (Use Eq. 4.) joules/g C g/mol

A:

Q: Provide a structure for the given compound. UV spectrum: Amax = 272 nm (e = 39500); El mass spectrum...

A:

Q: Write the correct ionic formula for the compound formed between Al3+ and HCO3–. A. Al(HCO3)3 B. AlH...

A: The Al3+ is a cation of aluminum atom which looses three electrons to form an ionic compound and HCO...

Q: From the Lewis structures of the species given, pick all of those in which the central atom obeys th...

A:

Q: You prepared a solution by dissolving 50 g of NH. Cl to make 900 mL of solution. Find its molarity.

A: given, the mass of NH4Cl = 50 g the molar mass of NH4Cl = 53.5 g.mol-1 volume of solution = 900 mL =...

Q: The following alkyl azide (R-N3) can be synthesized in two synthetic steps. Propose a two step synth...

A: Both the steps occurs via Sn2 mechanism.  In 1st reaction, OH is not a good leaving group. In presen...

Q: ollowing is a molecule with polar bonds whose shape was obtained using the VSEPR theory. Specify ole...

A: If dipole moment of each bond is cancel out then it is non- polar otherwise polar.  

Q: Given that B has pKb of 4.00, calculate the pH of 1.0 M BHCI. Express your answer with 2 places past...

A:

Q: X 10 J/g

A:

Q: How many peaks will show up in the H NMR spectrum of the given compound below. Choose one: A. 9...

A: The proton-NMR spectra of a compound is used to determine the presence of different types of hydroge...

Q: Use the following Lewis diagram for ethyl amine to answer the questions: 2 3 H H Remember that geome...

A:

Q: )The South le is aclually an elevation of 9000 ft, Go with a pressure ofE 10.5 psi,Ond the mole frac...

A: Given-> P = 10.5 psi Mole fraction = 0.00033  

Q: You are given a 0.25 M solution of an unknown weak base. Use 1/10th of dilution to find unknown weak...

A: In the given solution we are provided with 0.25 M solution of an unknown weak base which is then dil...

Q: A chemist titrates 50.0 ml of a 0.1190M aniline (C,H,NH,) solution with 0.6692M HCI solution at 25 °...

A:

Q: 4. What is the temperature change for 500 g of each meta below, when 1,000 j of energ

A:

Q: 4. In an experiment, a chemist prepared two different buffer solutions. For each one, calculate the ...

A: Buffer solution of acetic acid(CH3COOH) and sodium hydroxide (NaOH) a) We have: 20 ml of 0.200 M ace...

Q: Calculate the volume of saturated Ammonium sulphate to be added to a 276ml of protein solution to ac...

A:

Q: A container begins at a volume of 13.5 L and is at a pressure of 0.995 atm. If its volume is reduced...

A:

Q: Hydrogen reacts with oxygen to produce water as follows: 2H2(g) + O2(g) → 2H2O(g)  How many moles ...

A: The reaction is as:-  2H2 + O2 ---> 2H2O

Q: Name this compound using the stock system or the -ic/-ous suffix system. Compound: MnN

A: Naming of the given inorganic compound using stock system:

Q: A mixture of nitrogen and oxygen gas is compressed from a volume of 92.0 L to a volume of 85.0 L, wh...

A:

Q: need to write a background for the expirment can i please get help

A: This experiment is preparation of cyclohexanone. 

Q: Calculate q when 13.7 g of ice is cooled from -16.2°C to -82.9°C (cire = 2.087 J/g K)? J

A:

Q: Use the following Lewis diagram for 1-propanol to answer the questions: Remember that geometry refer...

A: Given , 1 - propanol

Q: The reactant concentration in a second-order reaction was 0.140 M after 260 s and 4.40×10 2 M after ...

A:

Q: High-purity benzoic acid (CH;COOH; AHxn for combustion =-3227 kJ/mol) is used as a standard for cali...

A: The heat of combustion of benzoic acid is = -3227 kJ/mol The mass of benzoic acid is = 1.221 g The h...

Q: An important reaction that takes place in a blast furnace during the production of iron is the forma...

A: Iron(III) oxide reacts with carbon monoxide to form iron metal and carbon dioxide gas. The equation ...

Q: molecular mass 71; IR: 3200 (strong, broad), 2250 cm-1; no absorptions in the 1500–2250 cm- range; '...

A:

Q: 1. How many moles are in 0.634 Eq of CO32–  a. 0.634 mole b. 1.27 moles c. 2 moles d. 0.317 mole

A: Given-    number of Equivalent= 0.634

Q: Compound A decomposes according to the equation       A(g) ⇌ 2 B(g) + C (g)   A sealed 1.00−L contai...

A: Calculate equilibrium concentration of B and C. 

Q: Part A MISSED THIS? Watch IWE 15.5; Read Sections 15.6, 15.8. You can click on the Review link to ac...

A: Equilibrium constant is the ratio of equilibrium concentration of product to the equilibrium concent...

Q: Ke V> %24 O 4. 5. n レ ! IIO 8. 大 nces ok 31.10°C, what is the specific heat capacity of the alloy? c...

A: mass of alloy = 17.2 g Alloy temperature = 93.00 ℃ mass of water = 50.0 g Water temperature = 22 ℃ F...

Q: Calculate the pH during the titration of 20.00 mL of 0.1000 M C6H5COOH(aq) with 0.2000 M NaOH(aq) af...

A:

Q: Which change to an equilibrium mixture of this reaction results in the formation of more H,S? O an i...

A: The effect of temperature, pressure, concentration at equilibrium is determined by Le-Chateleir prin...

Q: PRACTICE PROBLEM 22-4: Using the data in Table 22.1, calculate the solubility in grams per liter at ...

A:

Q: A mixture of helium and neon gas is expanded from a volume of 17.0 L to a volume of 74.0 L, while th...

A:

Q: 4. What is the temperature change for 500 g of each meta below, when 1,000 j of energy is added to e...

A: Few questions based on thermochemistry that is to be accomplished.

Q: The pH of an aqueous solution of 0.144 M ammonium perchlorate, NH4ClO4 (aq), is . This solution is

A:

Q: The Murchison meteorite that was found in Australia in 1969 is important to scientists because it co...

A: The Murchison shooting star is a shooting star that fell in Australia in 1969 close to Murchison, Vi...

Q: Part A Consider the reaction and its equilibrium constant: N2O4(g) Ke 2NO2(g) Calculate Qc at the gi...

A: Given data : [NO2] = 0.0242 M [N2O4] = 0.0350 M

Q: Classity the following substituents according to whether they are electron donors or electron accept...

A: 1. Here carbonyl group (CO) group is present so we know that it is a strong electron withdrawing gro...

Q: Write the molecular, Total Ionic and Net Ionic equations Sulfuric acid and sodium hydroxide a. M: b...

A:

Q: 1o5 POH (c) What is the pH at the first equivalence point? (d) What volume of NaOH is needed to reac...

A:

Q: The electrons in the outermost orbital determine the physical and chemical properties of the element...

A: Valence electrons are electrons in the outermost cell of an atom .      For example oxygen has six v...

Q: mgmmol and its density 1.495 mg/ul, convert 128 pl into mmols 00.128 mmol O 13.44 mmol 0122 mmol O0....

A: Mass = molar mass ×mole

Q: From the Lewis structures of the species given, pick all of those in which the central atom obeys th...

A: From the given lewis structure, pick all of those in which central atom follow octet rule.   

Q: Calculate the number of atoms of silver that are in 0.212 moles of silver. (Avogadro's number = 6.02...

A: Avogadro’s number, one mole of any substance (defined as its molecular weight in grams), is equal to...

Q: what is the IUPAC name of the ff: 1. CH3(CH2)4COCH2CH3 2. CH3CH2(CH2)6CH3 3. CH3COOCH3

A:

Q: Balance the following redox equations using the half-reaction method. Please help with a and e bc i’...

A: Balance the reaction:-  As2S3 + ClO3-  -----> Cl- + H2AsO4-  + S P -----> PH3 + H2PO2- Bi(OH)3...

Q: 10g of sodium nitrate is dissolved in a 90 ml of H2O (density of H2O=

A: Given,   Mass of Sodium nitrate(NaNO3)=10 g Molar mass(MM) of NaNO3 = 85g Moles of NaNO3 = mass/MM  ...

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.