A portable CD player that draws 200 milliamperes of current is powered by Ni-Cd rechargable batteries. Compute the mass of Cd consumed when a disk is played for 100 minutes. (enter your answer in grams)

Q: When an object enters an electric field, it will feel a force. How is the amount of force felt…

A: When an object enters a electric field it experiences a force,

Q: Define energy and explain the importance of energy in chemistry

A: Science is knowledge about facts that are based on observations of experiments.Chemistry is one of…

Q: A neutral solution of water at a particular temperature has a concentration of OH- of 4.5 × 10-7 M.…

A: Water molecule can act as acid as well as base. Hence it can give or take H+ ions. The auto…

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: CAI = 0.22 kcal/kg°C A 0.60 kg length of aluminum wire is warmed by 22.3°C by an electric current.…

A: Heat is a form of energy  Which is given by  q° mc∆T  Where m= mass  C = specific heat  T=…

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…

A:

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

A:

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: chemistry

A: Chemistry – Chemistry is a branch of science, it is related to elements, compounds, their…

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: 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: In metric terms, a typical automobile averages 5.76 km/L of gasoline burned. Gasoline has a heat of…

A:

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: 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: How much heat, in Joules, is absorbed by 60 g of water in order to increase in temperature from 23°C…

A: Interpretation: The amount of heat, in joules absorbed by 60 g of water in order to increase in…

Q: Use the following information to answer question 1. A group of students is asked to design and…

A: To answer the following question.

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: Part 1: what is the total calories that the man would gain if he only ate 225 grams from his steak?…

A: Given, mass of steak = 16 oz

Q: A portable CD player that draws 150 milliamperes of current is powered by Ni-Cd rechargable…

A: Charge, Q = current x time = 0.15 A x (115 x 60) seconds = 1035 C

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: A neutral solution of water at a particular temperature has a concentration of OH of 4.2 x 107 M.…

A: Given: The concentration of OH- for a neutral solution of water at a particular temperature = 4.2 ×…

Q: 114.9 kj into kilocalories

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

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: 26. The least energetic state of matter. 27. When it rains on you, which process just occurred?

A: In a solid, particles are tightly packed together so they do not move much. Since the atoms are…