The pressure inside a hydrogen-filled container was 2.10 atm at 21∘C. What would the pressure be if the container was heated to 89∘C ? Express your answer with the appropriate units.   B.) At standard temperature and pressure (0∘C and 1.00 atm ), 1.00 mol of an ideal gas occupies a volume of 22.4 L. What volume would the same amount of gas occupy at the same pressure and 90∘C ? Express your answer with the appropriate units.

Q: What is the pH of a 0.0370 M solution of hydrocyanic acid, HCN (Ka = 4.9 × 10⁻¹⁰)?

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Q: Determine the oxidation number for each atom in H,C,04 C: H: 0:

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Q: Which functional group suffix would be used for the following organic compound? * CH2 „CH2 H;C' `CH2...

A: A functional group is an atom or group that determines the properties of a molecule.

Q: Process in which atoms increases its oxidation number is called? Select one: a. Reduction b. Oxidati...

A: Process in which atoms increases its oxidation number is called ?

Q: Which heteroatom don't contain heterocyclic compounds? a. Phosphorus b. Oxygen c. Nitrogen d. Sulfur

A: The heterocyclic compounds are ring compounds containing  heteroatom  such as oxygen, nitrogen, Sulp...

Q: What is the mass, in grams, of 2.84 X 1023 atoms of lead? (This is a 2-step mole

A: Molar mass of Lead = 207 g/mol Number of atoms = 2.84×1023 atoms  Moles=Number of atoms/6.022×1023 =...

Q: 1.46 g Potassium hydrogen phthalate requires 34.3 mL of 0.145M NaOH for neutralization, what percent...

A: Given : Mass of Potassium hydrogen phthalate = 1.46g  

Q: a. What is the pH of a buffer solution that is 0.12 M NH3 and 0.12 M NH4+? К, for NH3 is 1.8 x 10-5....

A: Given that, a buffer solution has 0.12 M of NH3 and 0.12 M of NH4+. The Kb of NH3 is 1.8×10-5. a. We...

Q: Comment on the general features of the predicted (extremely simplified) 1H-NMR spectrum of lycopene ...

A: 1H NMR analysis:

Q: a. Choose the item that correctly describes the oxidizing agent and the reducing agent in the reacti...

A: The addition of electrons or decreases in the oxidation state is known as a reduction reaction and t...

Q: ASK YOUR TEACHER Consider the following mechanism. (1) CIO (aq) + H20(1) = HCIO(aq) + OH (aq) [fast]...

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Q: a) Plot In[sucrose] versus time and 1/[sucrose] versus time. b) What is the order of the reaction? c...

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Q: 1. Cl, FeCl, 2. HNO3, H,SO, SOH (d) 3. dil. H,SO,

A: A question based on introduction to organic chemistry that is to be accomplished.

Q: n [OH']

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Q: Current Attempt in Progress The reaction 2A + 2B M+N has the rate law: Rate k[A]?. At 25°C, k = 0.03...

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Q: A solution was made by dissolving 3.75 g of a solute in 108.7 g of acetone . The solution boiled at ...

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Q: At 25oC the vapor pressure of pure benzene is 93.9 torr. When a non-volatile solvent is dissolved in...

A: Relative lowering of vapor pressure:

Q: 13 mass of solute: Incorrec

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Q: Solvent Extraction – pH Effects Fraction remaining in phase 1 after 1 extraction, q V,+ DV2 НА K [H°...

A: Liquid - liquid extraction

Q: why do electron withdrawing groups destabilise negative charges?

A: Electron withdrawing group stabilize the negative charges   

Q: EXPERIMENTAL DATA The initial concentrations of SCN after dilution were calculated as part of the Pr...

A: The data given is, And the final volume of solution = 15.00 mL.

Q: U-235 collided with a neutron resulting to a nuclear fission producing La-145, Br-88, neutrons and e...

A: Answer: Amount of energy produced can be calculated by finding out the mass lost during the formatio...

Q: 4) Which of the following reagents would be ideal (low cost, environmentally safe) to produce 1? A) ...

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Q: Calculate Kp for cadmium sulfide from the following data: CdS(s) + 2e¯ → Cd(s) + S²- (ag) e° = -1.18...

A: The reactions given are,  

Q: For the chemical equation SO, (g) + NO,(g) = SO,(g)+NO(g) the equilibrium constant at a certain temp...

A: Equilibrium constant = [Product] / [Reactant]     

Q: Calculate the vapor pressure of a solution prepared by dissolving 25.5 g of naphthalene (C10H8), whi...

A: Given, mass of naphthalene = 25.5 g Molar mass of naphthalene = 128 g.mol-1 Mass of benzene = 150.0 ...

Q: Identify the nuclide produced by the decay process. Write the whole nuclide, using the isotope tool....

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Q: An aqueous solution was prepared by dissolving 4.93 g of KBr in enough water to make 750. mL of sol...

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Q: When a 24.3 mL sample of a 0.359 M aqueous hydrofluoric acid solution is titrated with a 0.382 M aqu...

A: 1.) We would use the fact that at half equivalance point , pH = pKa of weak acid.    2.) To calculat...

Q: ny grams of o inds of ontor

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Q: Use bond enthalpies in the table below to estimate AH for each of the following reactions. Part B Av...

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Q: Name the following compound Ho CH3 ュ-う-2Hコ-Hコ-HO CH3 2CH2 -CH2-ċ - c cHz CH3 -CH3 CH3

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Q: Consider a first order reaction XY2→X + Y2 The rate constant is 4.30 x 104 If the initial concentrat...

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Q: What volume of a 0.500 M HCI solution is needed to neutralize each of the following: (a) 20.0 mL of ...

A: We will first write balanced chemical equations for both and then find volume of HCl needed.

Q: Calculate molarity if solution in water (300K) has osmotic pressure of 3.00 atm.

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Q: Draw the major product of this reaction. -ignore inorganic byproducts. LHOM Eto NEAIONe CHEW consBE ...

A: Alcohol undergo oxidation. 

Q: Determine which will lower the freezing point of water more: 225.0 g of KCl or 225.0 g of Na2SO4? As...

A: We know that., Change in freezing point = freezing point of pure solvent - Freezing point of solutio...

Q: When balancing PbO, +Hg→Hg,+ + Pb²+ in acid solution, the correct answer is PbO, + 4H*+2Hg→Pb²+2H,0+...

A: Balanced the given redox reaction under acidic conditions----

Q: According to the following reaction, how many grams of calcium hydroxide are necessary to form 0.439...

A: Reaction :  Sulphuric acid (aq) + calcium hydroxide (s)  ----> calcium sulfate (s) + water(l)  Nu...

Q: he rate law for t

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Q: What is likely the type of that dissolved solute in the cells? (potatoes or sweet potatoes)

A: The solute  named sucrose is present. 

Q: In the reaction of Cl2 with ethane and UV light, which of the following reactions would be a propaga...

A: Free radical of alkane involve three step reaction. In first step formation of chlorine free radical...

Q: In a solutions, it is a substance that is usually present in greatest amount is known as? Select on...

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Q: What the molality of 9. is solution con taining | 20 g a of Nacl of 745 9 and w ater

A: Given: The mass of NaCl (sodium chloride) is 120 g The mass of water is 745 g

Q: The compound As2I4 is synthesized by reaction of arsenic metal with arsenic triiodide. If a solid cu...

A: We have to predict the mass of As2I4 that can be prepared and the mass that is actually isolated.  

Q: What causes the changes in ionisation energy across period 2  elements?

A: Ionisation energy is the energy required to remove an electron from the outermost shell of an atom. ...

Q: 3. For each of the following molecules or ions: i. Write an MO energy level (orbital correlation) di...

A: Bond order = (Number of electrons in BO/Number of electrons in ABO)/2

Q: The equilibrium constant with respect to concentration (Kc) for the reaction between nitrogen monoxi...

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Q: Given the following reactions, name the organic product(s) produced, if there is a reaction. If no r...

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Q: At 25oC the vapor pressure of pure benzene is 93.9 torr. When a non-volatile solvent is dissolved in...

A:

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.