An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9 % abundant. The other is 11.01 amu and is 80.1 % abundant. What is the average atomic mass? What element is it?

Q: What is the major product from the following reaction? • OH 1) 2) H2O2. NaOH 애 you OH you

A: The reaction of hydroboration oxidation of an alkyne is given and we have to tell the product of the…

Q: The specific heat of aluminum is 0.900j/g*C, how many joules of energy are required to raise the…

A: Specific heat : The amount of heat is required to raise the temperature of one gram compound by one…

Q: the 1.00 L buffer solution is 0.150 M in HC7H5O2 and .250 M in LiC7H5O2. calculate the pH of the…

A: We have to calculate the pH of buffer solution after HCl is added

Q: N₂F₂ can interconvert between trans and cis configurations. The cis isomer is more thermodynamically…

A: Given: N2F2 interconvert between trans and cis configurations. Cis isomer is more thermodynamically…

Q: determine the Kb for CN- at 25°C. the Ka for HCN is 4.9 x 10^-10

A: Kb = ? Ka for HCN = 4.9 x 10-10

Q: The compound shown here is classified as what type of organic compound? 010 i HạC-CH,—C—O—CH2-CH3 A)…

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Q: A standard dose of an over-the-counter cough suppressant for adults is 20.0 mL. A portion this size…

A: a) A standard dose of an over-the-counter cough suppressant for adults is 20.0 mL that contains 35…

Q: Hydrogen sulfide, H₂S, has the characteristic odor of rotten eggs. If a sample of H₂S gas at 2.75…

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Q: Match each step with the atomic spectroscopy that it occurs in. Each answer may be used once, more…

A: AES (Atomic Emission Spectroscopy)- the method of chemical analysis which is used to determine the…

Q: A particular beer is 6.50 % ethanol by volume. If a single bottle of beer contains a total of 750.0…

A:

Q: Make the following changes on the molecule in the drawing area below: 1. First, make sure this is…

A: Given : structure of molecule.

Q: Write the formulas for the following compounds: 11. Sodium oxide 12.Calcium sulfide 14. Magnesium…

A: Nomenclature of binary ionic compounds: The binary ionic compounds are formed by a metallic element…

Q: determine the molar solubility of AgI in pure water. Ksp (AgI) = 8.51 x 10^-17

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Q: [References] Use the References to access important values if needed for this question. A sample of…

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Q: Bleach is a solution of sodium hypochlorite (NaClO). If 3.104 mol of NaClO is dissolved in 423 L of…

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Q: Name the compound name and compound formulas.

A: We have to give the compound names and the compound formulas. The given compound names and the…

Q: What is the freezing point depression (in °C) and freezing point (in K) of a solution containing…

A: This can be solved using depression in freezing point method of colligative property as shown below.

Q: Calculate the volume of 1.000 kg of mercury when it is subjected to 100 atm at 850 °C. The van der…

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Q: Determine the total volume in milliliters of water a chemist should add if they want to prepare an…

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Q: (C=12.01g/mol; H=1.008g/mol; S=32.07g/mol; O=16.00g/mol) Black smokers are found in the depths of…

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Q: Calculate the energy required to heat 0.30kg of graphite from −4.8°C to 13.1°C . Assume the…

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Q: HBrO HBrO3 HBrO4 HBrO2

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Q: A hot air balloon is filled with 1.15 x 106 L of an ideal gas on a cool morning (11 °C). The air is…

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Q: (Na2SO4=142.05g/mol; Na2S-78.05g/mol, C=12.01 g/mol; CO=28.01g/mol) Sodium sulfide, Na₂S, is used in…

A: A limiting reagent is the one which finishes first in a reaction. The whole reaction depends on the…

Q: How many calories are in 1001 kilojoules? (1 cal = 4.184 J) 1 4 7

A: This can be calculated as:

Q: I) qk H. H III) jk H H Choose the structure that has the formal charge correctly assigned. II) zk H…

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Q: Consider the redox reaction 3 Ni² (aq) + 2 Co(s)→ 2 Co³(aq) + 3 Ni(s) Which substance gets oxidized?…

A: Oxidised species : when the atoms of a particular elements loss electrons are called oxidised…

Q: How would you find the initial [SCN-]  and the Equilibrium [FeSCN2+]?

A: The initial [SCN-] is already calculated which is the same as the [NaSCN].  Because each NaSCN…

Q: exothermic surroundings loses endothermic negative gains positive system 1. Drag the beaker of water…

A: Fill in the blanks.

Q: Balance the following redox reaction: MnO4 + HCN + →Mn²+ + ICN

A: A redox reaction is balanced by balancing the mass and charge. Hence the number of atoms of all the…

Q: which of the following is true

A: We have to choose the correct option. Since, a solution is acidic when [H3O+]>[OH-]

Q: (Na2SO4=142.05g/mol; Na2S-78.05g/mol, C=12.01g/mol; CO=28.01g/mol) Sodium sulfide, Na2S, is used in…

A: Limiting reactant: A reactant that is totally consumed when the chemical reaction is completed is…

Q: What effect will increasing the temperature have on the system? C3H8(g) +5O₂(g) ⇒ 3CO₂(g) + 4H₂O(1)…

A: Given: Reaction is  C3H8(g) + 5 O2(g) ⇌ 3 CO2(g) + 4 H2O(l)      ΔH° = -2220 kJ  We have to find the…

Q: Calculate the reduction potential of copper(II) to copper(0) when [Cu2+]= 0.0150 M. Write a brief…

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Q: Consider a 1.0 L of 0.1 M aqueous solution consisting of weak acid HA, which has K₂ = 3.9 x 10-4, at…

A: HA is a weak acid that is very weakly dissociated to give H+(aq) ions. HCl is a very strong acid…

Q: Consider the titration of a 60.0 mL of 0.297 M weak acid HA (Ka = 4.2 x 10⁻⁶) with 0.400 M KOH. a)…

A: a.) Before addition of base, there is only acid  in the solution, so we can use ionisation equation…

Q: Titanium (Φ = 6.94 ×× 10–19 J) and silicon (Φ = 7.77 ×× 10–19 J) surfaces are irradiated with UV…

A: Titanium (Φ = 6.94 ×× 10–19 J)  Silicon (Φ = 7.77 ×× 10–19 J) λ = 243 nm = 243 x 10-9 m

Q: For each of the following reactions, a. Predict the major product. b. State the type of mechanism…

A: Given : structure of reactants.  Tip : (a) E1 reaction        (b) SN2 reaction         (c) SN1…

Q: Calculate Eº, E, and AG for the following cell reaction: 2+ 2+ Mg(s) + Sn²+ (aq) = Mg²+ (aq) + Sn…

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Q: HOCH₂CH₂OH HKĐ ?

A: Given reactant is : cyclohexanone Given reagents are : ethylene glycol in acidic medium.  Product…

Q: (Fe=55.81g/mol; O=16.00g/mol; C=12.01g/mol) Iron ore is converted to iron metal in a reaction with…

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Q: Sulfur dioxide is a colorless gas with a strong odor that is produced when fuels containing sulfur…

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Q: Show the step that leads to the hybrid orbital of the following molecule. Name the hybrid orbital…

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Q: In a paper chromatography experiment, what is the relationship between the pigment solubility in a…

A: Paper chromatography: The analytical technique used to separate the compounds based on their…

Q: Some times peaks in the IR spectrum can appear especially broad. This is often seen with O-H…

A: we have to select the correct reason to explain why O-H stretches are broad in IR spectrum

Q: If your answer is 1.00 x10-3 M for the concentration Fe(NO3)3 in 0.10M. What would it be for the…

A: Since we have taken the same volume(5.00 mL) of Fe(NO3)3 in each of the six test tubes, the…

Q: 1H 10 2H 2h 3H An IR spectrum, a 13C NMR spectrum, and a ¹H NMR spectrum were obtained for an…

A: 1H-nmr provides the information of hydrogen environment of the unknown compound. 13C-nmr provides…

Q: Why will silver hydroxide be the least soluble in a solution of higher ph?

A: Silver hydroxide is AgOH.  The dissociation equation for AgOH(s) is: AgOH(s) ⇌ Ag+(aq) + OH-(aq)

Q: The reaction for the decomposition of PCl 5 to chlorine and PCl 3 is shown below.   PCl 5( g) ⇌ PCl…

A: Equilibrium constant is denoted by kc and it is equal to product concentration divide by reactant…

Q: on which of tthe following aqueous solutions would you expect CuCl to have the highest solubility

A: We would use common ion effect here.  According to this effect, is a solution has a ion common to…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.