A shell fossil that originally contained 100 mg of carbon-14 non contains 75 mg of the isotope. Determine the approximate age of the fossil. To the nearest 100 years if the half-life of carbon-14 is 5570 years.

Q: Liquid octane (CH,(CH,) CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (...

A: Given: Mass of octane=4.57 g Mass of oxygen gas=12.0 g Mass of water produced (Obtained yield) =2.38...

Q: at mass of

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Q: Consider this equilibrium: CUCO3 (s) + Cu2* (ao) (aq) + CO3²- K= 1 x 10-10 What is the equilibrium c...

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Q: Only one of the following changes will shift the equilibrium of this reaction left, favoring reactan...

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Q: ne theoretical yield of

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Q: Given: Complete combustion of Ethene is -1400 kJ/mol at 298.15 K a. Solve for the heat released in ...

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Q: 2. Synthesis (use as many boxes as needed, excess are provided)

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Q: What is the principle behind the isolation of albumin?

A: Albumin is the water soluble protein. It is isolated by salting out techniques.The principles involv...

Q: Draw the products of each reaction

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Q: identify the conjugate acid and con jugate base   CH3COO- + HCl ⇄ Cl- + CH3COOH

A: CH3COO^- + HCl -> Cl^- + CH3COOH  

Q: Name the highlighted chemical group in each molecule. Lewis structure name of highlighted group :N=C...

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Q: This question is based on the five compounds (A-E) given below. (A) CH;-CH=CH-CH3 (B) (C) CHCI=CHBR ...

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Q: At 673 K, the Gibbs-free energy for the oxidation of Z, which is a monoatomic liquid element with O2...

A: Given that, At 673 K, the Gibbs-free energy for the oxidation of Z, which is a monoatomic liquid ele...

Q: Nitrogen (N,) gas and hydrogen (H,) gas react to form ammonia (NH,) gas. Suppose you have 5.0 mol of...

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Q: Bucuse the fallowng chenicel test of Sewage -) ) Nitrogen ) Ftr, geses and och A PH Value Chloaie

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Q: If K, for HCN is 6.2 x 10-10, what is K, for CN-? O 6.2 x 104 O none of these O 6.2 x 10-24 O 1.6 x ...

A: Given that,  For the acid HCN , Ka = 6.2×10-10 We need to find Kb for its conjugate base CN-  

Q: HO H,O OH + [acid or base] OH Acetylsalicylic Acid (aspirin) Salicylic Acid CH,OH ,A H,SO, (conc.)] ...

A: .

Q: (CH,(CH,),CH;) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (CO,) and gaseo...

A: First of all we will calculate moles of hexane and oxygen.

Q: O THERMOCHEMISTRY ARLYQ Using specific heat capacity to find temperature change 0/5 A chemical react...

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Q: Draw the structure of a hydrocarbon that absorbs 2 molar equivalents of H2 on catalytic hydrogenatio...

A: Cyclobutene on ozonolysis gives butane diol and upon catalysis with 2 equivalent H2  gives cyclobuta...

Q: Is there a difference when the needle or metal clip is placed on the surface of distilled water and ...

A: Please find your solution below : Intermolecular forces of attraction are the forces that act betwee...

Q: Gaseous methane (CH,) reacts with gaseous oxygen gas (o,) to produce gaseous carbon dioxide (co.) an...

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Q: What volume of 0.5 M NaOH is required to react completely with 25.0 mL of 1.0 M H2CO3? Assume the re...

A: Given that,  Molarity of NaOH (M1) = 0.5 M  Molarity of H2CO3 (M2) = 1.0 M  Volume of H2CO3 (V2) = 2...

Q: What formula do you use to answer the question, Hydrogen and oxygen undergo a chemical reaction to f...

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Q: Q3// The basicity constant Kp for ammonia is 1.75 x 10 at 25°C. Calculate the pH and pOH for a 1.00 ...

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next ...

Q: PT#15  3.) Directions: Calculate the empirical and molecular formula of the given. Question: A com...

A: Molar mass of Carbon = 12.011 Moles of carbon = 26.5/12.011=2.21mol Molar mass of H=1.00784 Moles of...

Q: In an uncatalyzed reaction, the rate will be the fastest reaction rate: (A) (B) Initial Instantaneou...

A: Catalyst is the substance which increase rate of reaction by decreasing the activation energy. It do...

Q: Phosphoric acid, which is commonly used as rust inhibitor, food additive and etching agent for denta...

A: Given, The first step, phosphorus and oxygen react to form diphosphorus pentoxide: P4(l) + 5O2(g) --...

Q: Synthesize the folowng compnd stavting fom bezere 3 (A) (B) CHs Hz N

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Q: Phosphorus trichloride and chlorine gas react to form phosphorus pentachloride: PCh (g) + Cl, (R) O ...

A: Using ICE table   PCl3 Cl2 PCl5 Initial 1.0 M 2.0 M 0 Change x x x Equilibrium 1.0 -x 2...

Q: Lewis structure name of highlighted group H H .. H C -О — Н - н н

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Q: Calculate the associated wavelength of an electron traveling at 4.0 x10^9 cm/a

A: Answer: 1.82×10^-9 cm

Q: Which of the following factors would not be expected to affect reaction rate? (A) (B) (C) (D) (E) Ad...

A: a) Adding an appropriate catalyst catalyst can affect the rate of the reaction, on adding the cataly...

Q: An ideal gas ina cylinder fitted with a piston expands at constant temperature from a pressure of 7 ...

A: When a gas expands the work will be done by the gas on the surrounding. When the work is done by the...

Q: Decide whether each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic i...

A: first we have to determine given molecule is diatomic or polyatomic  Then we have to find given mole...

Q: Determine the average and standard deviation for the following set of numbers. 45.6g, 52.1g, and...

A: Solution - According to the question - Given  number - 45.6g, 52.1g, and 53.8g  Average = (45.6 + 52...

Q: а. HNO3 H2SO4 `NO2 но b. AICI3 CI С. Br2 FeBr3

A: The characteristic reaction of the aromatic compound is an aromatic electrophilic substitution react...

Q: Find the ∆H for the reaction below, given the following reactions and subsequent ∆H values: H2SO4 (l...

A: Thermodynamics is branch of chemistry in which we deal with amount of heat absorbed or evolved durin...

Q: Gaseous ethane (CH,CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (Co,) ...

A: 2CH3CH3 (g) + 7O2(g) ---->. 4CO2 (g) + 6H2O (g) To find theortical yield of water

Q: Illutrate with equation the preparation of alkanes by: a. Wurtz synthesis b. Grignard synthesis

A: Alkanes are saturated hydrocarbons.General formula of alkane is CnH2n+2 Here we have to illustrate a...

Q: A virus has a mass of 9.0 x 10 -12 mg and an oil tanker has a mass of 3.0 x 10' kg. Use this informa...

A: We have 1 mole of any substance contain Avogadro number6.022×1023 of atoms. Hence 1 mole of a viruse...

Q: Decreasing the temperature of the reaction CO (g) + ½ O2 → CO2 (g) favors (A) (B) Products Reactants

A: The reaction of carbon monoxide with oxygen is an exothermic reaction.

Q: of enthalpy

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Q: When the following equation is balanced properly under basic conditions, what are the coefficients o...

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

Q: One manufacturer’s instructions for setting up an aquarium specify that if boiled water is used, the...

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Q: What can be said about the IR spectrum below? What functional groups can be observed in the compound...

A: Infrared (IR) spectroscopy is an analytical technique which aims at structural elucidation of a comp...

Q: Gaseous butane (CH;(CH,),CH;) reacts with gaseous oxygen gas (02) to produce gaseous carbon dioxide ...

A: Reaction:-  CH3(CH2)2CH3(g)  + O2(g) ----> CO2(g)  + H2O(g)  Balanced chemical reaction:-  2C4H10...

Q: 3. Calculate the kg/cmol for Ca*2 (review the calculations from Lab 1). If a soil can retain 25 cmol...

A: Answer and explanation is given below hope you like it.

Q: 3- Calculate the final volume at 302 K of a 5.41 L sample of gas originally at 353 K if the pressure...

A: Given values, V1= 5.41 L , T1= 353 K V2= ? , T2=302 K

Q: luz luz (E) (E) (2E,4Z,6Z,8E)-deca-2,4,6,8-tetraen

A: A pericyclic reaction is a concerted reaction in which the number of rings in the transition state i...