A portable CD player that draws 150 milliamperes of current is powered by Ni-Cd rechargable batteries. Compute the mass of Cd consumed when a disk is played for 115 minutes. (enter your answer in grams)

Q: - A piece of zinc (Zn) is immersed in aqueous hydrochloric acid solution. According to this which of…

A: Given: Metal Zn is immersed in aqueous hydrochloric acid i.e. HCl solution.

Q: A portable CD player that draws 145 milliamperes of current is powered by Ni-Cd rechargable…

A: The overall reaction in Ni-Cd rechargeable batteries is shown below.…

Q: mestion 41 of 41 Suppose a boil water notice is sent out advising all residents in the area to boil…

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Q: 2. How many grams of water would require 2200o joules of heat to raise its temperature from 34.0°C…

A:

Q: How many g of Aluminum are needed to react completely with 16.41 gram of Mn3O4, according to the…

A: The molar mass of Mn = 54.938g/mol The molar mass of O = 15.999 g/mol The molar mass of Al = 26.981…

Q: Consider a block of wood having a volume of 125 cm³. If the block of wood burns at a rate of 15…

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Q: Thermometer When a solid dissolves in water, heat may be evolved or absorbed. The heat of…

A: The heat released in the reaction is equal to the sum of the heat absorbed by the solution and the…

Q: The true temperature of a glass of water is 82.01•F. A temperature transducer that generates a…

A: Accuracy and precision is a measurement of how much a value is close to actual Value.

Q: Tt Uonsand Suppose a boil water notice is sent out advising all residents in the area to boil their…

A: We need to boil 14L of water. 14L=14*1000ml=14000ml of water Natural gas is here methane. During…

Q: Convert this energy value to kilocalories (kcal). 153 kJ = kcal

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Q: How many litres of CS2(g) are decomposed with the release of 2.34 x 107 J of energy?

A: The chemical reaction with change in entropy is, CS2 (l) + 3O2 (g) → CO2 (g) + 2SO2 (g) ∆H  = -1077…

Q: The sun supplies about 1 kilowatt(s) of energy for each square meter of surface area (1 kW/m2kW/m2,…

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

Q: A 1533 kg car is traveling down the road at 99.0 km/h. While traveling at this rate of speed, what…

A: Here we use the formula of kinetic energy K.E = 1/2 m* V^2 Where m = mass of car = 1533 kg V =…

Q: A hot tub holds 350.0 liters of water. How much energy, in kilocalories (kcal), would be required…

A: Given : Volume of water = 350.0 L Density of water = 1.000 g/mL = 1.000 Kg/L               (since 1…

Q: 9.69 x 10^6 J = ? Kcal

A: Given :-  energy = 9.69 x 106 J  To convert :-  The above energy in Kcal

Q: 1.If your temperature changes from 20oC to 25oC—how much change is there in the mass of a 10.00 mL…

A: 1. Initial temperature(T1) = 20°C                              Final temperature(T2) = 25°C Initial…

Q: The quantity 26.0 kJ is equal to how many calories?

A: We have energy as 26.0 KJ . We have to convert it to Calorie .

Q: Most people find waterbeds uncomfortable unless the water (specific heat of 4.184 J/g °C)…

A: Volume = 622L Initial temperature = 85°F Final temperature = 61°F Specific heat of water = 4.184…

Q: 1621 kg car is traveling down the road at 89.4 km/h. While traveling at this rate of speed, what is…

A: The question is based on the concept of kinetic energy. the amount of energy possessed by a molecule…

Q: Carbohydrates serve as a vital source of chemical energy to the human body. Carbohydrates are broken…

A: We have to convert 119 KJ = ? KCal

Q: Consider the example of the block released from the spring and then travelling up the circular ramp.…

A: Nonconservative forces are the force of friction or the air resistance force. These forces takes…

Q: 21. A turblne system Is used to produce electrical energy. Wires (electrical energy) Turbine…

A: As per conventions, maximum energy is present at the source. As we convert the energy at the source…

Q: Determine the kinetic energy of a baseball thrown at 100.0 mph. The mass of a baseball is 144.3 g.

A: Given data, Mass of the baseball = 144.3 g  Velocity of the baseball = 100.0 mph Since , 1mph =…

Q: The combustion of solid glucose with oxygen gas produces carbon dioxide gas and water vapor. This…

A: The balanced chemical equation for the combustion of glucose can be written as: C6H12O6(s) + 6O2(g)…

Q: 2:375 Platinum is a precious metal used in making jewelry. It is rare, and as a result, extremely 4.…

A: To determine us enough energy is given for platinum to melt, we would compare the energy required to…

Q: Calculate It is estimated that 123,000 aluminum cans are recycled each minute. Assume that each can…

A: No of days in September = 30 days 1 day : 24 hrs 1 hr : 60 min So, Min in 1 day = 1440 min

Q: A subcompact car with a mass of 1.60×103 kg and a loaded dump truck with a mass of 1.60×104 kg are…

A: Since ,         kinetic energy KE=12mv2where ,           m=mass of moving particle…

Q: The gold plating of a ceramic figurine requires a total of 4.96 g of solid gold. If the current…

A: Given,  Mass of gold required, w = 4.96 g  Current passed, I = 11.8 A  Molar mass of gold = 197…

Q: Convert 15.00 kJ to calories (cal). 15.00 kJ = Convert 203 kcal to kilojoules (kJ). 203 kcal

A: Given here energy in unit of kJ and kcal and we are asked to convert themin cal and kJ the energies…

Q: Once you have completed your chemistry experiments, either by producing products or leaving reagents…

A: The answer for this problem is provided below in great details within the attached figure.

Q: How much heat, in Joules, is absorbed by 54 g of water in order to increase in temperature from 18°C…

A: Given that:  Mass of water = 54 g Increase in temperature , t =  (55-18 )oC = 37 oC

Q: 22. Energy is not considered a form of matter. Which of the following reasons correctly explains…

A: Matter: This is a part of universe. Matter is has measure the mass. Matter has own volume .  Energy:…

Q: How much work is done by an Olympic bicyclist who accelerates from 5.0 m/s to 10.0 m/s? The mass of…

A:

Q: In an oxidation-reduction reaction, a piece of copper wire was put into silver nitrate solution.…

A: In a chemical reaction, two or more reactant molecules may combine or decomposes to form the new…

Q: solutions, no points. Do not use pencils) 1. Calculate the temperature change when: 10.0 kg of water…

A: Dear learner, as per guideline I can solve only 1 question at once further can be reposted. Thanks…

Q: 114.9 kj into kilocalories

A: Given that,    114.9 kj into kilocalories For conversion ;     1 KJ   = 0.23906 Kilocalories

Q: The residential rate for natural gas is about $18.79 per thousand cubic foot. Burning one cubic foot…

A: The residential rate of natural gas is $18.79 per thousand cubic foot. Burning one cubic foot of…

Q: What are other examples of combustion in the human body?

A:

Q: Suppose 2,240 joules are absorbed by 245 grams of water. If the initial temperature of water is…

A: The mass of water = The initial temperature of the water = The amount of heat absorbed by water = We…

Q: When 1 g of water evaporates, the organism gives off 0.58 kcal of heat. At a comfortable…

A: Given: 1 g of water gives 0.58 kCal of heat. Rate of water evaporation = 35 m/h density of water = 1…

Q: Upload a drawing: Construct a graph showing how the potential energy of the system changes as the…

A: The formula for the potential energy(U) between two charged particles is: Potential energy(U) =…

Q: Convert the heat of neutralization of acetic acid from -48.6 kj/mmol to calories per millimole and…

A: Given that the heat of neutralization of acetic acid = -48.6 KJ/mmoles Convert the heat of…