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10/06/23

Turnover Number Calculation! New topic to me! Very lost!

You do an enzyme kinetic experiment and calculate a Vmax of 145 μmol per minute. If each assay used 0.20 mL of an enzyme solution that had a concentration of 0.20 mg/mL, what would be the turnover... more

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Chemistry Biochemistry

10/06/23

Km and Vmax and Turnover calculations! Very confused please help!

For an enzymatically catalyzed reaction in which the measured values for KM and Vmax are, respectively, 15.1 mM and 0.715 mM min-1, what is the value of the turnover number? The concentration of... more

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Chemistry Biochemistry

10/06/23

BIOCHEMISTRY-Reaction Velocity Question

For an enzyme that obeys Michaelis-Menten kinetics, what is the reaction velocity, V, observed at the following substrate concentrations?Express the result as a percentage of Vmax.(a) If [S] = KM,... more

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Chemistry

10/05/23

For the balanced chemical reaction 2H2 + O2 → 2H2O how many grams of water can be made by reacting 3.41 g of O2?

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Chemistry

10/05/23

Calculate the pH at equivalence.

A chemist titrates 70.0 mL of a 0.5369 M potassium hydroxide (KOH) solution with 0.6871M HCI solution at 25 °C. Calculate the pH at equivalence.Round your answer to 2 decimal placesyou may assume... more

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Chemistry

10/05/23

Calculate the pH at equivalence.

A chemist titrates 160.0 mL of a 0.0730M nitrous acid (HNO2) solution with 0.6587 M KOH solution at 25 °C. Calculate the pH at equivalence. The pKa of nitrous acid is 3.35Round your answer to 2... more

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Chemistry

10/05/23

Calculate the pH of the base solution

An analytical chemist is titrating 149.5 mL of a 0.3500 M solution of methylamine (CH3NH2) with a 0.6100M solution of HNO3. The pKb of methylamine is 3.36. Calculate the pH of the base solution... more

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Chemistry

10/05/23

Calculate the pH of the acid solution

An analytical chemist is titrating 189.7 mL of a 0.2900 M solution of butanoic acid (HC3H7CO2) with a 0.6900M solution of NaOH. The pKa of butanoic acid is 4.82. Calculate the pH of the acid... more

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Chemistry

10/05/23

Calculate the pH

An analytical chemist is titrating 241.4 mL of a 0.2300M solution of cyanic acid (HCNO) with a 1.200M solution of NaOH. The pKa of cyanic acid is 3.46.Calculate the pH of the acid solution after... more

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Chemistry

10/04/23

0.2192 g of calcium hydroxide, Ca(OH)2, in 43.75 mL of solution

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Chemistry

10/04/23

Precipitation Titration of CoCl2 with NaOH

How to tackle the following questions: "Calculate the moles, and mass (theoretical yield), of the precipitate that you were expecting to collect based on the product being Co(OH)2. Again, if you... more

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Chemistry

10/04/23

Precipitation Titration of CoCl2 with NaOH

How to tackle the following question, "Calculations – Include appropriate units and sig figs in your final answers and write them in theboxes provided.2.C Write the overall balanced equation and... more

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Chemistry Physics

10/04/23

brackets or paschen

if a radiation of 2000 nm was observed for hydrogen, does it fall under bracket or paschen series

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Chemistry

10/04/23

Chemistry equilibrium concentration

Kc= 1.25 x10^-72CIF «»(equilibrium) Cl2 + F2What are the equilibrium concentrations of all species present? (I know that the quadratic function won’t be used because the kp is very very small so my... more

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Chemistry

10/03/23

Calculate the grams of H2 consumed if 87 g of ammonia is produced according to the reaction: N2 + 3H2 - 2NH3

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Chemistry

10/02/23

Chemistry equilibrium concentration

A mixture of 3.51 mol N2 and 35.21 g NO is heated in a closed vessel to 2000C. After heating, the total pressure of the mixture at equilibrium is 3.14 atm. Calculate the equilibrium partial... more

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Chemistry

10/02/23

Chemistry finding equilibrium concentration

A mixture of 3.51 mol N2 and 35.21 g NO is heated in a closed vessel to 2000C. After heating, the total pressure of the mixture at equilibrium is 3.14 atm. Calculate the equilibrium partial... more

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Chemistry

10/02/23

If Kc = 82 for the reaction below at 200.0 K, then what is the value of Kp? (R = 0.0821 L･atm/mol･K.) 2 NO₂ (g) ⇌ N₂O₄ (g)

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Chemistry

10/02/23

How long, in seconds, would it take for the concentration of A to decrease from 0.950 M to 0.350 M?

The rate constant for this first-order reaction is 0.170 s^-1 at 400 degrees Celsius. A-->productst=

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Chemistry

10/02/23

Using the data in the table, determine the rate constant of the reaction and select the appropriate units. A+2B-->C+D

Trial [A] (M) [B] (M) Rate (M/s)1 0.200 0.280 0.02402 0.200 0.560 0.02403 0.400 0.280 0.0960k=Units=

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Chemistry

10/01/23

What is the enthalpy of the reaction as written?

When 0.636 g of sodium metal is added to an excess of hydrochloric acid, 6610 J of heat are produced. What is the enthalpy of the reaction as written?2Na(s)+2HCl(aq)⟶2NaCl(aq)+H2(g)Enthalpy of... more

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Chemistry

10/01/23

how many nutritional Calories are there per gram of the candy?

A researcher studying the nutritional value of a new candy places a 6.60 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase... more

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Chemistry

10/01/23

The heat capacity (calorimeter constant) of the calorimeter is 34.85 kJ/ ∘C, what is the heat of combustion per gram of the material?

A 2.333 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 25.17 ∘C to 30.62 ∘C.The heat capacity (calorimeter... more

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Chemistry

10/01/23

The heat capacity (calorimeter constant) of the calorimeter is 34.85 kJ/ ∘C, what is the heat of combustion per gram of the material?

A 2.333 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 25.17 ∘C to 30.62 ∘C.The heat capacity (calorimeter... more

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Chemistry

10/01/23

How much heat energy is needed to raise the temperature of 2.66 kg of this oil from 23 °C to 191 °C?

The specific heat of a certain type of cooking oil is 1.75 J/(g⋅°C). How much heat energy is needed to raise the temperature of 2.66 kg of this oil from 23 °C to 191 °C?q= ?J

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Turnover Number Calculation! New topic to me! Very lost!

Km and Vmax and Turnover calculations! Very confused please help!

BIOCHEMISTRY-Reaction Velocity Question

For the balanced chemical reaction 2H2 + O2 → 2H2O how many grams of water can be made by reacting 3.41 g of O2?

Calculate the pH at equivalence.

Calculate the pH at equivalence.

Calculate the pH of the base solution

Calculate the pH of the acid solution

Calculate the pH

0.2192 g of calcium hydroxide, Ca(OH)2, in 43.75 mL of solution

Precipitation Titration of CoCl2 with NaOH

Precipitation Titration of CoCl2 with NaOH

brackets or paschen

Chemistry equilibrium concentration

Calculate the grams of H2 consumed if 87 g of ammonia is produced according to the reaction: N2 + 3H2 - 2NH3

Chemistry equilibrium concentration

Chemistry finding equilibrium concentration

If Kc = 82 for the reaction below at 200.0 K, then what is the value of Kp? (R = 0.0821 L･atm/mol･K.) 2 NO₂ (g) ⇌ N₂O₄ (g)

How long, in seconds, would it take for the concentration of A to decrease from 0.950 M to 0.350 M?

Using the data in the table, determine the rate constant of the reaction and select the appropriate units. A+2B-->C+D

What is the enthalpy of the reaction as written?

how many nutritional Calories are there per gram of the candy?

The heat capacity (calorimeter constant) of the calorimeter is 34.85 kJ/ ∘C, what is the heat of combustion per gram of the material?

The heat capacity (calorimeter constant) of the calorimeter is 34.85 kJ/ ∘C, what is the heat of combustion per gram of the material?

How much heat energy is needed to raise the temperature of 2.66 kg of this oil from 23 °C to 191 °C?

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