A given reaction has an activation energy of 24.52 kJ/mol. At 25°C, the half-life is 4 minutes. At what temperature will the half-life be reduced to 20 seconds? 125°C 100°C 115°C 150°C

Q: The molarity of a solution is determined by four separate titrations or replicates, where the…

A: Given observations are : 1). 0.4120  2). 0.4920  3). 0.3920  4). 0.4888  5). 0.4320  Standard error…

Q: Grams of solute/100g H₂O 120 110 100 90 80 70 60 50 40 30 20 10 0 0 Na2SO47 NaNO3 HCI NH3 10 20 30…

A: The above question is based on solubility curve . The solubility curve represent the number of gram…

Q: How many moles of NaOCI would be present in 1 gallon of commercial bleach (density = 1.05 g/ml),…

A:

Q: Q12) Houw much water that required add to 200 ml HNU, I densly -1.285 gm/unl) Contains 46 wt% acid…

A:

Q: A chemist measured the concentration of a solution three times and obtained the following results…

A: Accuracy and precision are two important terms as far as measurement is concerned. Accuracy means…

Q: A chemist makes 770. mL of aluminum sulfate (Al, (SO,),) working solution by mol adding distilled…

A: Answer: concentration of the chemist's working solution is 0.589 mol/L

Q: In preparing an infusion of the drug cetuximab, a pharmacist adds 15 mL of bacteriostatic water for…

A: Drug Trastuzumab 350mg. Here pharmacist adds 15 ml bacteriostatic water into it and resulting…

Q: (d) (4.556 g + 0.020 g)/(11.42 mL - 7.17 mL) = i Units

A:

Q: 5000 kg of tuna fish was sent to the factory for canning. 30% of the fish (scale, stomach, head and…

A: This is numerical  aptitude question which based on simple calculation.

Q: Units (c) (20.0 g - 8.5 g)/(0.028 mL - 0.002 mL) Hint

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Q: Chemical Reactions: Molecular Equation: HCl(aq) + NaOH(aq) NaCl(aq) + H₂O Net lonic Equation: H(aq)…

A: Detail

Q: A stock solution of 7.99 microM dye is provided. While making one of the standard solutions, a…

A: Given data :

Q: .

A: It is given that alcohol needs to be converted into an ether the reaction scheme is shown in the…

Q: 20.00g of sodium hydroxide are placed in a volumetric flask and the solution made up to 250 cm3 with…

A: Given,  Mass of NaOH = 20.00 g  Volume of the solution in cm3 = 250 cm3  What is the concentration…

Q: The parameters involved in the concept of dilution are the following: Volume of tank and brine. O…

A: Dilution is the process in which concentration of solute in a solution by mixing more solvent. To…

Q: What is  12.235g/1.01mL

A: We are given:  12.235g/1.01mL

Q: A student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this may…

A: Solubility of substance is defined as mass of  solute dissolve per liter of the solution.

Q: 3- A sample of a solution weighing 850.0 g is knowno conien 03 moles of potassium chlorice, What is…

A: We are provided with moles of potassium chloride and mass of solution.    Mass of potassium chloride…

Q: Chemistry A young adult (60 kg body weight) drinks two beers of 12 oz. each, over a period of 10…

A: #(b): A 60 Kg body weight person has approximately 36 L (60%)  of body water. Given the person…

Q: Suppose your topsoil has a cation-exchage capacity of 20 cm(+)/kg soil and a bulk density of 1.41…

A: CEC = 20.3 cmol(+)/kg Bulk density = 1.41 g/cm3,

Q: An analysis of 0.7 kg dry soil sample (having a volume of 500 mL) shows that sample contains 35 mg…

A: The molecular weight of naphthalene (C10H8)= (120+8)=128 g. 35 mg= 0.035 g naphthalene is present in…

Q: In the experiment of making salted eggs, a cleaned egg is immersed in a solution a lot of NaCl salt.…

A: Diffusion of NaCl inside the egg having the shell thickness T and Radius R. shown in fig.It is given…

Q: A chemist prepares a solution of zinc nitrate by measuring out 78. umol of zinc nitrate into a 100.…

A: Given: The number of micromoles of zinc nitrate present = 78 μmol The volume of the solution = 100…

Q: Your teacher asks you to dilute 6.0 M HNO3 (M1) to 250. mL (V2) of 1.0M HNO3 (M2). What volume (V2)…

A: Given Molarity(M1) = 6.0 M Volume (V1) = ?  Molarity (M2) = 1.0 M Volume (V2) = 250.0 mL

Q: An aqueous solution of barium bromide has a concentration of 0.246 molal. The percent by mass of…

A: We will use the direct formula for converting the percent mass(%) to molarity using density.We know…

Q: CI. gut = OH 0°C concentrated X 1. LIAIH 2. H₂O* NaOH

A:

Q: 12) How much water that required add to 200 ml HNO, ( densly = 1.285 gmpml) Contains 46 wt% acid to…

A: Given: Volume of HNO3 =200 ml.                             Density = 1.285 g/ml To find : Volume of…

Q: Question 20 of 30 A calibrated burette will be used to deliver an intravenous medication dosage…

A: Given: Volume of medicine = 5 mLVolume of dilutant = 40 mLVolume of flush = 15 mL Total volume need…

Q: 0.456 L of a 2.2 M KCl solution Express your answer using two significant figures. • View Available…

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Q: 4 The solubility of Co(OH), in water at 25 °C is measured to be 6.4 × 10 Use this information to…

A: Given- Solubility=6.4×10-4g/L

Q: Ques If 450 g of magnesium hydroxide is dissolved in water to make 6.5 L of solution, what is the…

A:

Q: A)Hydroxide ion concentration? B)Hydronium ion concentration?

A:

Q: The mass of the propanol solute is 210.329 g and the mass of the water solvent is 1000 g. What is…

A: In the given solution we have to tell the total mass of solutions. As we know that the mass of…

Q: A solution of 20.91% by weight H;SO, has a specific gravity of 1.150. What is the normality of this…

A:

Q: 6)  100.01 mg Cu(NO3)2 is diluted to 100.00 mL with distilled water. Calculate the ppm of the…

A: GIVEN: Mass of Cu(NO3)2 is = 100.01 mg Volume of distilled water = 100.00 mL = 0.100 L Uncertainty…

Q: As part of this experíment you will need to determine the concentrations of Fe* and SCN+ ions…

A:

Q: A chemist must dilute 21.1mL of 6.81M aqueous calcium bromide CaBr2 solution until the concentration…

A: Here we have to see the concept of dilution. When we dilute the concentrated solution to low…

Q: 10) ? HO 2.

A:

Q: Stock or starting Serial dilutions done Total dilution factor Final concentration concentration…

A: For first we are provided starting concentration and total dilution factor. We are required to find…

Q: Information Name: BAUTISTA Unknown Acid Volume: 12.150 mt 10.0M NƏOH IO00 ml te 25.0°C Temperature:…

A: Volume of unknown acid = 12.150 mL Molarity of NaOH =10.0 M Volume of NaOH used= 10 mL

Q: The molarity (M) of an aqueous solution containing 0.065 mol of sucrose in 85 mL of solution is 4 A)…

A: Molarity is defined as moles of solute present in 1 L of solution. it is a method of expressing…

Q: A 0.3256 gram sample sodiun oxalate ( GEW= 67) was used for the standardization of KMn04 and…

A: Given,  Mass of sodium oxalate in g = 0.3256 g  Gram equivalent weight of sodium oxalate = 67…

Q: 29.0 mL of a 2.50 M H₂SO4 solution from a(n) 11.2 M H₂SO4 solution Express your answer with the…

A: When we dilute a concentrated solution with pure water, the mole of the solute remains constant in…

Q: When you walked in to Mrs. Bateast's lab today, you noticed that your partner group had a 0.05432 ml…

A: Given: Initial volume of mixture = 0.05432 mL. And volume of water added = 5.2 mL.

Q: A 147. ml. solution was made by mixing 98.0 mL of cyclohexane, which has a density of 0.78 g/ml.,…

A: We can determine volume percent of a substance in solution is given shown as below  -