If someone takes 2 mg of Hg2+ per day in his food, and the steady state concentration was 9 mg, Calculate t0.5 for the pollutant in the body?

Q: -> Chem101 A neutral solution of water at a particular temperature has a concentration of OH- of 7.5…

A: The question is based on the concept of equilibrium. we have been given concentration of hydroxide…

Q: 5. Given the following data calculate AH for the reaction: NO (g) + 0 (g) → NO2 (g) Data 202(g) →…

A: Heat of reaction is defined as difference of energy of product  and energy of Reactant. If heat of…

Q: A typical candy bar weighs about 2.00 oz (1.00 oz = 28.4 g).   (a) Assuming that a candy bar is 100%…

A: a) Massof Candy bar=2.00 oz                                  (1.00 oz = 28.4 g)…

Q: 1. What quantity of heat is required to raise the temperature of 450 grams of water from 15°C to…

A: Given Mass of water (m) = 450 g Initial temperature (Ti) = 15°C Final temperature (Tf) = 85°C Amount…

Q: The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW:…

A: The heat of dissolution for KClO3 is = 3803.8 J

Q: A standard dose of trinitroglycerin for relief of angina is 0.60 mg. If the sample is eventually…

A:

Q: Suppose that the total mass of the reactants in a chemical reaction was 100.00000 g. How many…

A: Given: Total mass of reactants = 100.00000 g. And the total mass of products formed = 99.99900 g.

Q: If an athlete expends 2241 kJ/h, how long does she have to play to work off 1.00 lb of body fat?…

A: The solution is given below -

Q: During a very light activity, such as reading or watching television, the average adult expends…

A: The light activity lije reading or watching television required 7kj/min 1kJ= 0.239 Kcal. 7Kj=…

Q: What is the kinetic energy of a 0.146 kilogram baseball moving at a velocity of 44.8 meters per…

A: Given that:  Mass of baseball(m) = 0.146Kg  Velocity(v) = 44.8m/s

Q: A potential chemical reaction at 25.0 °C has a ΔHrxn of 153.1 kJ and a ΔSrxn of -331.4 J/K. What is…

A: Given information: Temperature = 25.0 °C  ΔHrxn = 153.1 kJ ΔSrxn = -331.4 J/K

Q: For comparison, the atomic bombs dropped on Hiroshima and Nagasaki released between 54 and 96…

A: “Since there are multiple questions in this question and it is not mentioned that which one has to…

Q: A pint of premium ice cream can contain 1100 Calories. What mass of fat, in grams and pounds, must…

A: Given the average number of calories produced by combustion of 1 gram of fat is 9.1 calorie But also…

Q: In the process illustrated by the pV diagram in (Figure 1), the temperature of the ideal gas remains…

A: (a) At b: Pressure = 0.200 atm Volume= 0.100m3  = 100L Temperature = 147°C = 420K Using Ideal gas…

Q: A propane grill is used to cook ribeye steak and potatoes. About 0.470 L of propane (C,Hs) 1s…

A: Given information: Volume = 0.470 L Density of propane = 0.493 g/cm3 Enthalpy of reaction =…

Q: (a) Convert 41.3 L atm to kcal. (Use dimensional analysis)  (b) Convert –279.67°F to K. (C)The…

A: Bond enthalpy: It can be defined by saying that the amount of energy required to break the bond for…

Q: What is the efficiency of a crane that uses 5.10 x 10° J of energy to lift 1000 kg to a vertical…

A: Answer: This question is based on second law of thermodynamics according to which no machine can…

Q: When 2 moles of SO2(g) react with O2(g) to form SO3(g) according to the following equation, 198 kJ…

A: Given reaction: 2SO2(g) + O2(g) → 2SO3(g) It is given that when 2 moles of SO2(g) react with O2(g)…

Q: A potential chemical reaction at 25.0 °C has a ΔHrxn of 138.3 kJ and a ΔSrxn of -394.2 J/K. What is…

A:

Q: A marshmallow is burned in a soda can calorimeter, and heats up 0.255 kg of water by 12.9°C. The…

A: To calculate the mass of sugar ( which is type of carbohydrate ) , we would first calculate the heat…

Q: In a neutralization reaction in a well-insulated calorimeter, 112.9 g of 1.2915 M NaOH were added to…

A: Given: Mass of NaOH solution = 112.9 g. Mass of HCl solution = 129.1 g. concentration of NaOH =…

Q: Decide how the objects in the following table would be listed, if they were listed in order of…

A: Due to technical error ,unable to provide you the solution. Please resubmit the question once again

Q: The data given in the table below is for the following reaction (run at 25°C): 2 NO + O, 2(g) → 2…

A: 1. Order with respect to NO  = 2     Order with respect to O2  = 1 2. Rate Law…

Q: certain mass of substance 10 releases 3.19 kJ of energy.  If the initial temperature was 91.8  and…

A: q = mc∆T  q is the heat ,m is the mass, c is the specific heat, ∆T = Change in temperature  q =…

Q: Decide how the objects in the following table would be listed, if they were listed in order of…

A: Below attached file showing the details answer. All the best.

Q: 2. What is the total number of calories needed to change the temperature of 50.0 grams of water by…

A: q = mc∆T  q is the amount of heat energy needed m is the mass of substance  c is the specific heat…

Q: A large sport utility vehicle has a mass of 2500 kg. Calculate the mass of CO2 emitted into the…

A:

Q: Normal text Times New. - 12 BIUA + E- 1E = E- E - E E X 2 3 I c. Water from the sodium hydroxide…

A:

Q: A 2.15-gram raw cashew nut is burned. The heat released raises the temperature of a 100.0-gram…

A: Here, Convert joules to calories.

Q: Nagyung wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW: 122.55 g/mol)…

A:

Q: 5. For the reaction in which hydrogen iodide is made at 425°C in the gas phase from its elements,…

A: For a reaction, in which partial dissociation of constituents can take place , we should consider…

Q: A bicyclist is stopped at the entrance to a valley, as sketched below: D B. Where would the…

A:

Q: The combustion of sucrose (C12H22011) proceeds according to the following reaction. What is the…

A: Energy change of a reaction is represents by ∆H , it is also called enthalpy change.  If energy is…

Q: The Sun supplies about 1.0 kilowatt of energy for each squaremeter of surface area (1.0 kW/m2, where…

A: In a chemical reaction, two or more reactants react with each other to form a new substances. This…

Q: A baby carriage is sitting at the top of a hill that is 20m high. The carriage with the baby weighs…

A: Potential depends on the mass height .

Q: How many calories are released by 231 grams of iron decreasing in temperature from 294℃ to 65℃?

A:

Q: - In a neutralization reaction in a well-insulated calorimeter, 112.9 g of 1.2915 M NaOH were added…

A: Given: Mass of NaOH solution = 112.9 g. Mass of HCl solution = 129.1 g. concentration of NaOH =…

Q: Wind energy is becoming a more common form of energy that can be used to run household appliances.…

A: Given :-  Volume of water = V = 60 L  Mass of water = m = 60 kg = 60000 g  Initial temperature of…

Q: How much energy is required to raise the temperature of 12.2 grams of gaseous nitrogen from 23.0 °C…

A: In the given question, the energy required to raise the temperature of 0.368 kg of copper from 23.0…

Q: DHvap = 31.3 kJ/mol for acetone. If 1.40 kg of water were vaporized to steam in a boiler, how much…

A:

Q: If a glove with a mass of 78.0 grams composed of cotton increases in temperature by 16.7 °F, how…

A: The question is based on the concept of specific heat capacity.   amount of heat required to raise…

Q: During a very light activity, such as reading or watching television, the average adult expends…

A: Given: Energy expenditure per minute by an average adult = 7 kJ = 7000 J We know, 1 J = 2.39 x 10-4…

Q: A 0.0202-mol sample of a nutrient substance, with a formula weight of I14 g/mol, is burned in a bomb…

A: Given,  Number of moles of sample = 0.0202 Molar Mass of sample = 114 g/mol Mass of water = 5.13 x…

Q: A cashew is burned in a soda can calorimeter, and heats up 0.245 kg of water by 3.65 °C. The…

A: To calculate mass of fat contained in cashew , we would first Calculate heat given up by burning a…

Q: Decide how the objects in the following table would be listed, if they were listed in order of…

A: Given :-    -----------------------------------------------------