In a certain culture where the rate of growth * of bacteria is proportional to the number present, the number triples in 4 days. If at the end of 7 days there are 9 million bacteria present in the culture, how many were present initially?

Q: What is the pH of a 0.712 M weak acid solution that has a Ka = 4.5 x 10-9?

A: Weak acids dissociate partially. So we have to calculate degree of dissociation first and then pH.

Q: Given the following data N2(g) + O2(g) → 2NO(g) 2NO(g) + O2(g) → 2NO2(g) AH = +180.7 kJ AH 113.1 kJ…

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Q: CH₂Cl www

A: In this question, we will see the reaction mechanism for this transportation.  You can see the…

Q: ower! (a) (B) fo fa in a 488 m2 sample collected over water at 0.745 alm at 288.15K2 How many moles…

A: Given: Volume of sample = 488 mL Pressure = 0.745 atm Temperature = 288.15 K

Q: 11. It is impossible to convert heat completely into work in a cyclic process. 12. Work can be equal…

A: Since you have asked a question with multiple sub-parts, as per our company guidelines we are…

Q: Calculate the water solubility of silver chloride in g/L. The Ksp is 1.8x10-¹⁰ a the MW 143.4 g/mol.…

A: Given, Ksp of silver chloride is 1.8×10-10 Molecular weight of silver chloride = 143.4 g/mol

Q: Determine the dielectric displacement of material in which the polarization and electric field…

A: Given values: Electric field, E=2×10-8 C/m2 Polarization, P=10×104 V/m

Q: values : Experimental values of IR Peaks compared to literature values for Benzoic Acid (ATR…

A: A question based on IR spectroscopy that is to be accomplished.

Q: 3. An electrolytic cell is used to plate silver from a silver nitrate solution unto an electrode.…

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Q: 1. What's the slope of the calibration curve? 3.95 x 10-5 4.17x10-5 1 20484 25257 2. What's the…

A: The linear regression equation of the calibration curve is: Y = 25257X - 114.32

Q: Choose the best answer.

A: Raw material are the basic material which are used to produce the end material according to  its…

Q: What do you observe when hydrated copper (II) sulphate is heated?

A: Hydrated copper (II) sulfate has 5 molecules of water of crystallization and when it is heated it…

Q: Identify the product of the reaction. CH₂-CH₂ H₂SO4 ? H OH Express your answer as a chemical…

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Q: 47) Combination of two p-atomic orbitals give two molecular orbitals. Show the possible two…

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Q: what chemical substance is formed when the −H and −OH ends are joined?

A: The correct answer is given below

Q: Consider the formation of Propylene (C;H6) by the gas-phase thermal cracking of n-butane (C4H10):…

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Q: Given the following standard reduction values, choose the INCORRECT statement among the choices: Eº…

A: Oxidising agent is the species which oxidises other species and reduces itself. More is the standard…

Q: In a certain culture where the rate of growth * of bacteria is proportional to the number present,…

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Q: Why does water often cause changes to various experiments?

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Q: Gas particles have random _____. speed speed and direction mass temperature direction

A: We can answer the above question by using Kinetic theory of gases.

Q: What is the molar solubility of Ca(OH)2? Ksp = 8.0 x 10-6

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Q: 0.369 mol of a weak base (pKb = 5.52) is added to 0.298 mol of the salt containing its conjugate…

A: Buffer solution has tendency to maintain constant pH upon addition of small amount of acid or base.…

Q: C. Using the generic Michaelis-Menten plot below, describe the reaction's behavior in the following…

A: The explanation is given below-

Q: At what position, and on what ring, would you expect the following substances to undergo…

A: ✓Given reaction is an example of electrophilic substitution reaction.An electrophilic substitution…

Q: Ni (s) | Ni+2 (1.5 M) || Ni+² (1.0 M) | Ni(s) is a valid spontaneous voltaic/concentration cell. Eº…

A: Here we are required to state whether the electrochemical cell reaction is spontaneous or non…

Q: When a cold drink is taken from a refrigerator, its temperature is 4 degrees Celsius. After 20…

A: Given, Initial temperature of cold drink  = 4°C

Q: Which substance CANNOT decolorize bromine water? a. Substance A b. Substance B c. Substance C d.…

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Q: 5. Glutaraldehyde is a germicidal agent that is sometimes used to sterilize medical equipment. In…

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Q: Use the following chemical equation to answer the questions below. Fe (s) + 2H¹ (aq) = H₂(g) + Fe²+…

A: This problem can be explained by Le Chatelir's principle . Le Chatelier's principle can be stated as…

Q: Propose a mechanism to account for the following reaction: CH3 CH₂Cl H₂C AICI H₂C

A: We have to predict the mechanism for the given reaction.

Q: sodium

A: Part A: The dissociation reaction of iron (ii) carbonate is given as: FeCO3 (s) --------->…

Q: 21) Which of these represents the reaction of a phenolic antioxidant neutralizing a free radical 7…

A: In the given question we have to find out the reaction which represents the phenolic antioxidant…

Q: Calculate the pOH of a 0.20 M solution of pyridine, C5H5N. The Kb value for C5H5N is 1.7 x 10-⁹. O…

A: we have to calculate the pOH of 0.20 M pyridine

Q: Which of the given solutions is in the solid phase? A. Iodine solution B. Dental fillings (amalgam)…

A: A solid compound have a fixed shape and mass. A liquid compound does not have a fixed shape, it will…

Q: Aside from London dispersion forces, which substance do you expect dipole interactions to be…

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Q: For the aqueous [Hg(NH3)4]2+ complex Kf=1.911019 at 25°C. Suppose equal volumes of 0.0090M HgNO32…

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Q: An experiment was conducted to measure the standard reduction potential, Ered of magnesium, Mg (s)…

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Q: A 0.534 g sample of steam at 103.5 °C is condensed into a container with 4.98 g of water at 14.4 °C.…

A: Solutions                  Concept : Heat lost by steam = Heat gain by water

Q: In a converter, 11.30 kg of SO3 is fed and allowed to come into contact with a certain amount of…

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Q: What reactants would give the aldol condensation product shown? H ozl

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Q: What are possible qualitative chemical tests that can be used in identifying aspirin in the product?…

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Q: What is the pH of a solution prepared by dissolving 8.13 grams of NaCN (49.01 g/mol) in 1.4 L of…

A: Given,  The pH of a solution prepared by dissolving 8.13 grams of NaCN (49.01 g/mol) in 1.4 L of…

Q: What is the pH of a solution composed of 0.40M HOBr and 0.40M NaOBr. Ka of HOBr is 2.6x10-⁹ 9.12…

A: Given concentration of [HOBr] = 0.40M  [NaOBr] = 0.40M  Ka of HOBr = 2.6 * 10-9  To Calculate the pH…

Q: A 10.0 g sample of pure acetic acid, CH,CO,H is completely burned. The heat released warms 2.00 L of…

A: Given that -  Mass of acetic acid = 10.0 g  Volume of water = 2.00 L = 2000 mL  Initial temperature…

Q: Magnesium phosphate is a supplement used to treat calcium deficiencies that may be associated with…

A: Bb

Q: 4. The americium isotope Am is unstable and emits a 5.538 MeV alpha particle. The atomic mass of Am…

A: #4: An alpha particle, He24 has 2 protons (Z = 2) and 4 unit mass. Hence when an alpha particle,…

Q: What is the pH of a solution that has [H*] of 1.00 X 10-4? O-4 O 14 4 01

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Q: Determine the percent magnesium oxide in a sample of 0.3000g impure magnesium oxide titrated with…

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Q: the total hardness of water sample?

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Q: Aluminum hydroxide is one component of antacids for hyperacidity. If one tablet contains 178 mg,…

A: Given :  Ksp = 1.9 x 10-33  Volume = 1 litre  Mass of aluminium hydroxide in one tablet = 178 mg