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: Discuss the self-heating meals in the Chemistry in Action in your textbook and make other…

A: In case of self heating meals, no chemical reaction takes place. Instead of taking place of…

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: Which substances conduct electricity?

A: The conductance of electricity in a substance is a measure of how easily the flow of electricity…

Q: Diamond is a strong and hard material that does not conduct electricity. Verify this statement.

A:

Q: Label each of the following as either a physical process or a chemical process:(a) rusting of an…

A: Physical processes - A change where there is physical deformation of the existing species has…

Q: Albert Szent-Gyorgi, a pioneer in early photosynthesis research, stated, “What drives life is a…

A: Given:-             What drives life is a little electric current, kept up by the sunshine

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: A baby's spoon with a surface area of 6.25 cm² is plated with silver from AgNO3 using a current 2 A…

A: Given : Surface are of spoon = 6.25 cm2  Current = 2 A And time = 2 hr 25 min = 145 mins…

Q: Is there a destruction or change in matter during chemical reaction? Support your answer in 200…

A: Matter :-  Any thing which has mass and occupy some space is called as matter  Matter can be broadly…

Q: Four test tubes with 20mL of water and cut flowers were set up. Three of the test tubes had food…

A: as per question its the Time that is 10:00 am that is kept constant for observation of the color

Q: a

A: Dear student I have given answer to your question in the image format.

Q: Benefits

A: Nano Medicine is defined as the field of medicine that aims to use the properties and physical…

Q: A portable CD player that draws 200 milliamperes of current is powered by Ni-Cd rechargable…

A: Convert the unit of time to seconds,

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

A: Calculation of mass of woodblock: The volume and density of woodblock are given. By using this…

Q: (4) Treatises are (a) A comprehensive presentation of broad area of chemistry. (b) Books of…

A: 4.Treaties is formal disclosure of some subjects generally in depth knowledge than essay So option b…

Q: A0.148-g sample of an unknown was analyzed for its P content. The SOP which was used for this…

A: We have to calculate the gravimetric factor with five decimal places according to the question.

Q: b,PO, wi (aq) (s) (g)

A: Given compound is Rb3PO4 . Chemical name of  Rb3PO4  is Trirubidium phosphate .

Q: use the web to determine the amount of aluminum used in the united state in a single year. What is…

A: A question based on use of Al, which is to be accomplished.

Q: In the Styrofoam ball investigation, it is likely that the charges on the ball and rod are

A: In this question we have to explain the accurate reason of attraction between styrofoam and ball by…

Q: 10 grams of methane and 10 grams of ethane are burned completely. Which will produce more carbon…

A: In this question, we have to calculate which will produce more CO2 on combustion.

Q: 1. Astudent analyzes an aspirin tablet using a method similar to the one used in this experiment.…

A: 1) HOW MIGHT THERESULTS DIFFER IF A STUDENT ANALYZES A RECENTLY PURCHASED TABLET V/S A LONG EXPIRED…

Q: Golf balls are made up of rubber.What the properties of rubber to work properly.write an essay on…

A: Elastomer known as rubber is a linear polymer which possesses elasticity and good resistance to…

Q: Which of the following statements is correct? a. the mass of chemical substances deposited at the…

A: The correct option is:

Q: Glucose in stored in the body as glycogen. Consider the oxidation reaction for glucose with oxygen…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A student places 3.157 grams of copper wire along with excess sulfur into a crucible (and cover),…

A: When Cu (copper) reacts with excess S (sulfur), Cu2S is formed as the product. The corresponding…

Q: at which ammonia is consumed in a laboratory experiment is 4.06 oduced? our answer to 2 decimal…

A: For the balanced chemical reaction,  The rate of reaction is (-1/4)□[NH3]/□t = (1/6)□[H2O]/□t So,…

Q: Why do you think engineers believe that spraying, and not a steady stream of fuel, is more…

A: Spraying a fuel and steady stream supply of fuel have different surface area of action. Hence they…

Q: Identify if the following are physical (P) or chemical (C) characteristics. 1. Corrosion of a pipe…

A:

Q: This graph represents the density of water. Sketch and label a line representing: A- a metal B-…

A: The density is defined as the ratio of mass per unit volume. density = massvolume d = mv

Q: how are you going to reduce wastes which are detrimental to our environment?

A: Some wastes are very harmful for our environment.  They degrade our environment and has bad impact…

Q: 2. There is a need to make many 10mm holes in a rubber hose. It is not hard to punch or drill holes…

A:

Q: Q4: The heater element of an electric kettle has a constant resistance of 120 n and the applied…

A: Given : Resistance = 120 ohm's Voltage = 220 volts Temperature = 15°c and 90° c   Finds :…

Q: shutdown of electricity during experiment cause error

A: When there occurs a difference between the value of a physical measurement obtained for a person and…

Q: If an electric car is capable of going 225 km on a singlecharge, how many charges will it need to…

A: Since 1 km = 0.621 miles The charges as the trip begin with a full charge is calculated as Since 1…

Q: Area Of Field Health And Medicine Food And Agriculture Consumer Product Some Chemical Components…

A: Consumer goods Consumer goods, often known as final goods, are items that are purchased by people or…

Q: Q2: Indicate whether the following statements are true or false, correct the false and give a proper…

A: Q2: Indicate whether the following statements are true or false, correct the false and give a proper…

Q: 275g. The soil

A: Mass of saturated pores= 275gm After drying  24 hours ,sample weight = 200gm

Q: What are the environmental implications of nanotechnology?

A:

Q: Differentiate waste from recycling. Provide example each.

A: There is no comparison source for waste and recycling because recycling is a process of conversion…

Q: Makes oceans and seas to have higher clarity than lakes and rivers.   a. SALINITY

A: Oceans water has a more uniform composition than lake and river water. It contains, by weight, about…

Q: Energy consumption in the United States produced 4.57 x 10^6 metric tons of carbon dioxide emissions…

A: Given: Mass of CO2 = 4.57 X 106 metric tons.

Q: sodium is not kept in  a  petrol  b  k oil  c  n hexane d  water

A:

Q: For this method to work the solid must (a) be more dense than the liquid, and (b) not react with nor…

A: we know density = mass volume  for metal piece, if we know the mass and volume of piece of metal…

Q: does personal care use nanotechnology?

A: NANOTECHNOLOGY -   As we know that , Nanotechnology , it is defined as  the science of converting…

Q: Boron is concentrated mainly in the lungs (0.34 mg), thyroid gland (0.30 mg), spleen (0.26mg), brain…

A: Given that, Amount of boron in lungs = 0.34 mg Amount of boron in thyroid gland = 0.30 mg Amount of…

Q: Wind power plants cannot change the and wild life. a. Water level O b. Solid waste O c. Panel d.…

A: Explained as follows

Q: Fatty acids are stored in the body as triglicerides in adipose tissues. Consider the oxidation…

A: Solution - According to the question Fatty acid - Fatty acids are the building blocks of the fat in…

Q: If the temperature of a sample of water requires 3.2 kJ of heat to raise the temperature from 26.1°C…

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