Wednesday

August 5, 2015

August 5, 2015

Number of results: 70,339

**math**

Gary has 10 coins in his pocket. 2 quarters 5 dimes 3 nickels without looking, Gary pulls 1 coin from his pocket and puts it on a table. Then, he pulls one more coin from his pocket. What is the probability that the first coin is a dime and the second coin is a nickle?
*March 31, 2013 by sheryl*

**Math**

If Mike has 8 dimes and 6 pennies in his pocket. If he randomly selected one coin and then a second coin without replacing the first, what is the probability that both coins were dimes?
*March 26, 2014 by Amy*

**6th grade math**

We are learning probability and can you please check my answer. Question: Enrique has 3 dimes, 2 quarters, and 5 nickels in his pocket. He takes one coin from his pocket at random. What is the probability that the coin is either a dime or a nickel? My answer is 8:10 which ...
*March 22, 2009 by Kathy*

**Math**

Andy has 6 dimes and 10 nickels in his pocket. If he draws two coins without replacing the first coin, what is the probability of drawing a nickel and then a dime? A ¼ B 15/64 C 1/60 D 3/5
*October 23, 2012 by Anonymous*

**math**

jane have 4 nickels, 6 pennies, 4 dimes, and 2 quarters. she picks a coin at random. what is the probability that she will pick a nickel or a dime/
*September 13, 2012 by cj*

**10th grade**

jordan has 2 quarters, 1 nickel, and 3 dimes. if he took 1 out and then a second one without replacing the first coin, what is the probability that both coins were dimes?
*December 5, 2010 by audrey*

**Probability**

Jolie has 6 quarters, 6 dimes, 4 nickels, and 10 pennies in her coin purse. If two coins are drawn at random without replacement, what is the probability of drawing a quarter on the first draw and a nickel on the second draw?
*March 30, 2012 by Kay*

**math**

Gene has less 12 nickels,dimes,&quarters in his pocket.The probabilty of pulling out a nickel or quarter is 3/4.pulling out a dime is 1/4.How many coins does gene have in his pocket?.how many of each coin does he have?Please explain how you got the answerit will help me alot ...
*April 14, 2011 by mike *

**Algebra 2**

You have 10 coins..3 quarters,5 dimes, and 2 nickels. a. A coin is selected and then replaced. A second coin is selected and then replaced. A third coin is selected and then replaced. Find the probability that all 3 coins were dimes.
*March 12, 2011 by Norma*

**Math**

A man has $1.15 in quarters and dimes in his pocket. If he has one more dime than he has quarters, how many of each coin does he have?
*October 31, 2014 by Amanda*

**Math word problem**

lydi sold 4/5 of her candles to raise money for the band. she has 8 candles left. how many candles did lydia start with? a coin purse contains quarters, dimes, and nickes. there are the same number of dimes as nickesl and half as many quarters as dimes. the coins are worth $1...
*March 12, 2012 by marko*

**math**

Using pennies, nickels, dimes or quarters, determine which kind of coin is in each circle in the answer Colum. First clue: The total value of the four coins is an odd number. Second clue: The sum of the value of the middle 2 coins is 11 cents. Third clue: Each coin is worth ...
*January 17, 2014 by nisrin*

**Math**

A coin purse contains 10 pennies, 5 nickels, 3 dimes, and 2 quarters. Two coins are selected without the first one being replaced. Find P(quarter, then nickel).
*June 13, 2009 by D.*

**statistics/probability**

A game consists of tossing two coins, first a dime and then a nickel. For each coin which comes up a head you win the value of the coin. For each coin which comes up a tail you get nothing. {HH,HT,TH,TT} - each outcome with probability .25 - winnings are 15,10,5,0 a) Find the ...
*October 28, 2012 by carmen, please help!!*

**6th grade math**

Gene has less than 12 nickels,dimes,and quarters in his pocket.The probability of pulling out a nickel or a quarter is 3/4.The probabilty of pulling out a dime is 1/4.How many coins does Gene have in his pocket?How many of each does he have?
*April 14, 2011 by mike T*

**math**

question 1- john has nickels quarters and dimes totaling $3.30,21 coins in all,with one more nickel than dimes.How many of each type of coin does he have?
*June 9, 2013 by abraham*

**sixth grade math**

Gene has less than 12 nickels,dimes,and quarters in his pocket.The probability of pulling out a nickel or a quarter is 3/4.The probabilty of pulling out a dime is 1/4.How many coins does Gene have in his pocket?How many of each does he have?Please explain
*April 15, 2011 by mike T*

**Probability**

* I have a question. The sentence below says, "A PENNY, a NICKEL, and a DIME are flipped....." Does this go in order? That is,.....for example: (H,T,H)The first H is for PENNY, the T is for NICKEL, and the last H is for DIME? A penny, a nickel, and a dime are flipped at the ...
*February 15, 2014 by Anonymous*

**math**

John has 8 quarters, 3 dimes,and 7 nickels in the change holder in his car. He uses 16 of those coins, totaling $2.50, to buy some tacos. Which coins remain in the change holder? a. 1 dime, 1 nickel b. 1 dime, 1 quarter c. 1 nickel, 1 quarter d. 2 quarters e. 2 nickels please ...
*January 23, 2014 by Thomas*

**5th grade-math**

Sheila brought $1.95 in coins to spend at the bake sale. Her coins were all in dimes and quarters. The number of quarters she had was two less than the number of dimes. How many of each coin did she have?.
*November 3, 2009 by Javier*

**math**

1. Ms.lynch has 21 coins in nickels and dimes. Their total value is $1.65. How many of each coin does she have? 2. A vending machine that takes only dimes and quarters contains 30 coins, with a total value of $4.20. How many of each coin are there?
*April 20, 2013 by kathryn*

**Math**

suppose you have 2 dimes ad 3 quarters in a bag. You shake it so that 2 coins fall out. 1) What is the probability that both coins are quarters? 2) both coins are dimes? 3) both coins are the same? 4)you shake out one of each coin?
*March 19, 2014 by Matt*

**maths**

Class 5G is having a pizza party. Mrs Baker asked all the children to bring in 50c for their share of the pizza.The next day all the girls came with their 50c but Mrs Baker noticed that every girl had brought their 50c using different coins. Whatis the most number of girls ...
*July 30, 2007 by JaredN*

**math word problems**

lydi sold 4/5 of her candles to raise money for the band. she has 8 candles left. how many candles did lydia start with? a coin purse contains quarters, dimes, and nickes. there are the same number of dimes as nickesl and half as many quarters as dimes. the coins are worth $1....
*March 12, 2012 by marko*

**Math**

Zach has two pennies, a nickel, three dimes and two quarters. If he picks two of the coins at random, how many distinct values are possible for the two coins combined?
*September 20, 2013 by Anonymous*

**probability**

urgent till 3 pm i have in colombia” 1 Alice has five coins in a bag: two coins are normal (i.e., fair with one face Heads and the other face Tails), two are double-headed (i.e., both sides are Heads), and the last one is double-tailed (i.e., both sides are Tails). She reaches...
*March 11, 2014 by Sakura1*

**Probability**

Alice has five coins in a bag: two coins are normal (i.e., fair with one face Heads and the other face Tails), two are double-headed (i.e., both sides are Heads), and the last one is double-tailed (i.e., both sides are Tails). She reaches into the bag and randomly pulls out a ...
*March 7, 2014 by qwerty*

**math**

Eight pennies are placed in a row on a tabletop. Every other coin is then replaced with a nickel. Every third coin is then replaced with a dime. finally, every fourth coin is replaced with a quarter. what is vaule of the eight coins noe on the table?
*December 3, 2009 by Tim*

**math**

can someone help explain how to do this? allen has nickels dimes and quarters in his pocket. the number of nickels is 1 more than twice the number of quarters. the number of dimes is 1 less than the number of quarters. if the value of change in his pocket is 85 cents, how many...
*March 28, 2011 by Robbie*

**math**

Trista has 8 coins in her pocket that total to $1.55.She only has quarters and dimes.How many of each coin does Trista have?
*September 21, 2009 by Daysi *

**math**

Melissa has 10 coins in her pocket. 2 quarters 3 dimes 4 nickel 1 penny What is the theoretical probability of pulling a quarter out of your pocket, putting it back, then pulling out a penn? My answer is 1/50 Also what is the theoretical probability of pulling a nickel out of ...
*January 9, 2014 by Kyle*

**8th grade math**

Matt has twice as many quarters as dimes in his coin collection. If the dimes and quarters together total $9.00 how many of each kind of coin does he have?
*December 7, 2010 by Anonymous*

**math**

A box contains 4 coins: a penny, a nickel, a dime, and a quarter. It costs a dime to reach in and take a coin. What is the expected value of this game?
*December 12, 2008 by Samantha*

**math**

Corrine has 3 quarters, 7 dimes, 6 nickels, and 4 pennies in her pocket. If one coin falls out, what is the probability that it will not be worth more than $0.10? 3/20 7/20 1/2 17/20
*July 22, 2010 by David*

**Math**

A jar contains 14 nickels, 10 dimes, 6 quarters, and 22 pennies. A coin is chosen at random from the jar. What is the probability that the coin chosen is a dime? Option A: 5/21 Option B: 1/21 Option C: 5/26 Option D: 1/26
*June 1, 2015 by Gigi*

**7th Grade Math 123**

Write one or two equations to represent the situation below. Solve the equation(s). Show all your work. A collection of dimes and quarters totals 72 coins. Together the dimes and quarters are equal to $11.70. How many of each coin are in the collection? 2 and 6 tenths? Can you...
*November 7, 2006 by Danny*

**Math**

Two coins are tossed in order. What is the probability of getting a head on the first coin and then getting a tail on the second coin?
*June 13, 2009 by Maya*

**Math**

A coin bank contains only nickels,dimes, and quarters. the value of the 19 coins in the bank is $2.00. There are twice as many nickels as dimes. Find the number of each type of coin in the bank. How do you solve this?
*February 24, 2010 by Jason*

**Math**

A coin bank contains only nickels,dimes, and quarters. the value of the 19 coins in the bank is $2.00. There are twice as many nickels as dimes. Find the number of each type of coin in the bank. How do I solve this?
*February 24, 2010 by Jason*

**math**

eva has 4 quarters, 5 dimes, and 6 nickels in her pocket. She takes out 2 coins without looking. What is the probability that eva picked a dime followed by a quarter?
*September 14, 2011 by john*

**math**

Tony has 4 quarters, 5 dimes, and 8 nickels in his pocket. He takes out 2 coins without looking. What is the probability that Tony picked a dime followed by a quarter?
*September 15, 2011 by cindy*

**math**

a childs bank contains $6.30 in dimes and quarters. there are twice as many dimes as quarters. how many of each kind of coin are in the bank? let d = #dimes and q=#quarters. The total is worth $6.30. eqn 1 is 0.10*d + 0.25*q=$6.30 eqn 2 is 2*#quarters = #dimes or 2q=d. Two ...
*November 29, 2006 by katie*

**Math**

In Lloyd's pocket are 6 coins: 3 dimes, 2 nickels, and 1 penny. If Lloyd randomly takes two coins out of his pocket, what is the probablity that he will take out 11 cents? The book shows the answer 1/5, but my question is wouldn't the number of each coin come into play?
*January 26, 2010 by Teri*

**grade 10 math**

Chris has $3.85 in dimes and quarters. There are 25 coins in all. How many of each type of coin does he have? If d represents the number of dimes and q represents the number of quarters, what two equations describe the problem?
*March 10, 2011 by Rebecca*

**College Algebra**

A coin jar contains nickels, dimes and quarters. There are 46 coins in all. There are 11 more nickels than quarters. The value of the dimes is $1.00 less than the value of the quarters. How many coins of each type are in the jar?
*April 26, 2011 by Nancy*

**Algebra**

A coin collection contains 30 coins in nickels, dimes, and quarters. There are three more dimes than nickels. The value of the coins is 3.55. Find the number of quarters in the collection.
*September 24, 2014 by Lois*

**Finite Math**

John has three coins in his pocket. One is fair, one has two heads, and the third is unbalanced, showing head 60% of the time. John grabs a coin at random and tosses it. Find the probability that: 1) The coin shows a head 2) The coin is regular, give that the toss produced a ...
*July 21, 2012 by Preet*

**math**

laurens grandpa has her pick a handful of change, she picks only nickels, dimes and quarters. lauren has 5 more quarters than dimes, and half as many nickels as quarters. if her total amt is $4.75 how many of each coin does lauren pick?
*November 17, 2008 by sam*

**math**

A charity organization is collecting change to raise monay. They have collected twice as many dimes as quarters, 22 more nickels than dimes, and 3 times as many pennies as nickels. a) define a variable for the number of quarters collected. b) use you defines variable to write ...
*November 24, 2012 by stephy*

**math **

A charity organization is collecting change to raise monay. They have collected twice as many dimes as quarters, 22 more nickels than dimes, and 3 times as many pennies as nickels. a) define a variable for the number of quarters collected. b) use you defines variable to write ...
*November 24, 2012 by stephy*

**MATH HELP**

A charity organization is collecting change to raise monay. They have collected twice as many dimes as quarters, 22 more nickels than dimes, and 3 times as many pennies as nickels. a) define a variable for the number of quarters collected. b) use you defines variable to write ...
*November 24, 2012 by stephy*

**math**

Can this be solved? Jenny has 11 coins in her pocket, all of which are either nickels or dimes. If the value of the coins is 754, how many of each type of coin does she have?
*January 30, 2013 by Vee*

**Probability**

Alice has two coins. The probability of Heads for the first coin is 1/3, and the probability of Heads for the second is 2/3. Other than this difference, the coins are indistinguishable. Alice chooses one of the coins at random and sends it to Bob. The random selection used by ...
*April 2, 2014 by A*

**Math**

Hi, Can someone help me with this problem? Thank you. Problem: A driver approaches a toll booth and randomly selects two coins from his pocket. If his pocket contains 2 quarters, 2 dimes, and 2 nickels, what is the probability that the two coins he selects will be at least ...
*April 12, 2011 by bikie*

**math**

a person has $4 in nickles, quarters, and dimes. there is a total of 36 coins altogether. the number of quarters is 4 less then the number of dimes. Algerbaicly determine the number of each type of coin using a system of 3 equations with 3 variables.
*September 13, 2010 by Bob*

**Math problem I need help with**

Combination of coins that can be used; fifty-cent piece, quarters, dimes, nickels, and pennies Q: My 3 types of coins total 37 cents. I have fewer than 4, but more than 1, of each coin. What are the coins?
*November 9, 2009 by Tyler*

**math**

For the next eight problems, use the following scenario to find the probabilities: Jane has 4 quarters, 5 dimes, 6 nickels, and 2 pennies in her change purse. Two coins are drawn at random and the first coin IS NOT REPLACED.
*June 7, 2014 by corina*

**Alegbra**

. Rachel has 15 coins with a value of $2.85. If the coins are either dimes or quarters, how many of each coin does she have? Write and solve using a system of equations.
*February 27, 2014 by EddieG*

**algebra**

Rachel has 15 coins with a value of $2.85. If the coins are either dimes or quarters, how many of each coin does she have? Write and solve using a system of equations
*March 3, 2014 by billy*

**Math **

we have 2 coins: coin 1 comes up with the probability of tails of 2/3 while coin 2 comes up with the probability of tails of 1/3 you dont know which is which so you pick one up at random and flip it . If its tails, you guess that the coin you picked up is coin 1 else you guess...
*January 19, 2015 by Jake*

**Math- urgent**

Solving Systems by Substitution Maribel has $1.25 in her pocket. The money is in quarters and dimes. There are a total of 8 coins. How many quarters and dimes does Maribel have in her pocket? I think the equation is 10x+25x=$1.25 and x+x=8 but I'm not sure.
*August 27, 2014 by sara*

**riddle**

What two coins will make up 30 cents but you cannot use a nickel ? What two coins will make up 30 cents but you cannot use a nickel ? The way you phrased the question, there is no answer. The usual way the problem is worded is, "What two coins total 30 cents? One of them is ...
*May 19, 2007 by Peggy*

**algebra**

Tristan has $3.75 in quarters and dimes. She has 21 coins. How many of each coin does she have?
*January 4, 2013 by dayalyn*

**physics**

Ten ,one rupees coin are put on the top of at each other on a table each coin has a mass 'm' give the magnitudes and direction of - 1. The force of seventh coin (counted from bottom) due to all the coins. 2. The reaction of 6th coin on the 7th coin. 3. The force at 7th coin by...
*October 14, 2014 by nayan*

**MATH**

24 1c coins are set out in a row on a table. Then every 2nd coin is replaced by a 2c coin every 3rd coin is replaced by a 5c coin every 4th coin is replaced by a 10c coin every 5th coin is replaced by a 20c coin every 6th coin is replaced by a 50c coin every 7th coin is ...
*January 26, 2010 by BRENDON*

**algebra**

Please tell me IF there is a solution to this question (or is it misprinted). Can this be solved? Jenny has 11 coins in her pocket, all of which are either nickels or dimes. If the value of the coins is 754, how many of each type of coin does she have?
*January 31, 2013 by Vee*

**Math**

a piggy bank contains $8.80 in quarters, dimes and nickles. there are two more than five times as many nickles as quarters, and four less than twice as many dimes as quarters. how may of each coin are there
*November 16, 2010 by Grace*

**probability**

A box of 6 coins (penny, nickel, dime or quarter) worth $0.67 is shaken. What is the probability that a nickel is drawn first and then a quarter? Assume no replacement and that all coins are equally likely.
*September 28, 2010 by taylor*

**MATHS**

24 1c coins are set out in a row on a table Then every 2nd coin is replaced by a 2c coin every 3rd coin is replaced by a 5c coin every 4th coin is replaced by a 10c coin every 5th coin is replaced by a 20c coin every 6th coin is replaced by a 50c coin and every 7th coin is ...
*November 19, 2013 by LARA*

**Math**

Cindy had $1.08 using 9 coins. She had as many pennies as dimes. ___ Danielle had 96 coins, using ten coins. She had the same number of nickels as all the other coins put together. __ The coin choices are. Half Dollar, Quarters, Dimes, Nickels, and Pennies. Help?
*May 21, 2008 by Bob*

**chemistry**

A coin dealer offers to sell you an ancient nickel coin that is 3.1 cm in diameter and 4.65 mm in thickness. A) The density of nickel is 8.9 g/cm3. How much should the coin weigh if it is pure nickel? (in grams) B) If nickel sells for $0.216 per troy ounce, how much is the ...
*June 10, 2015 by Abe*

**algebra**

total $3.25 worth of coins nickels, dimes, quarters 2morenickels than dimes 1 more quarter than nickels how many of each coin
*September 22, 2014 by Anonymous*

**Algrebra-Systems of Equations**

A collection of dimes and quarters is worth $19.85. There are 34 more dime than quarters. Write a system of equations that can be used to find how many of each type of coin there are in the collection.
*January 19, 2012 by Resha*

**ALGEBRA 1**

Stu has $21.40 in dimes and quarters for a totl of 100 coins. How many of each kind of coin does he have?
*May 29, 2012 by susana*

**math**

Tashana has 16 coins that total to $1.85. She has only nickels, dimes and quarters. How many of each coin could she have?
*February 17, 2013 by r. anthony*

**elementary math**

A student has a penny, nickel, dime, and quarter distributed two coins apiece to his front two pants pockets. What is the probability that the front right pocket has more than 30¢ in it?
*August 7, 2010 by jojo*

**math**

A student has a penny, nickel, dime, and quarter distributed two coins apiece to his front two pants pockets. What is the probability that the front right pocket has more then 30 cents in it?
*March 8, 2014 by Brittany *

**Math**

Charles has 34 coins 1/3 of them are pennies 1/4 is nickles 1/6 is dimes and the rest of them are quarters. Tell how many of each coin Charles found. Draw all coins and label them
*March 7, 2013 by MoM*

**math**

A man has 21 coins in his pocket, all of which are dimes and quarters. If the total value of his change is 405 cents, how many dimes and how many quarters does he hav
*April 9, 2014 by m*

**Math**

In a collection of nickels, dimes, and quarters worth &6.90, the ratio of the number of nickels to dimes is 3:8. The ratio of the number of dimes to quarters is 4:5. Find the number of each type of coin. Use a coin value chart to help. well, 4:5 is the same as 8:10 That makes ...
*April 11, 2007 by Natasha*

**Math**

Daniel has 21 coins. All of them are either quarters or dimes. Altogether, he has $3.45. How many of each type of coin does he have?
*February 15, 2015 by Student*

**Algebra**

Suzie has 11 coins in her purse. the coins are dimes and quarters. If she has $2.00 in her purse, how many of each coin does she have?
*January 15, 2012 by terry*

**probability**

Tossing a pair of coins We have a white coin, for which P(Heads)=0.4 and a black coin for which P(Heads)=0.6. The flips of the same or of different coins are independent. For each of the following situations, determine whether the random variable N can be approximated by a ...
*April 11, 2015 by RVE*

**pre algebra**

danielle has 3 dimes, 2 quarters, and 5 nickles in her pocket. what is the probability that she chooses a dime followed by a quarter? is 3/5 the correct answer?
*June 23, 2010 by lavena*

**Math **

Laverne has sixty-one coins, all of which are dimes and quarters. If the totoal value is $9.85, how many of each kind of coin she has?
*January 13, 2010 by Arthur *

**Math: Probablity**

A penny, a nickel, and a dime are flipped at the same time. Each coin can come out either heads (H) or tails (T). a. What name is given to the act of flipping the coins? b. There are eight elements in the sample space (i.e., HHH,THT, etc.). List all eight outcomes. c. How many...
*February 15, 2014 by Anonymous*

**math**

Sam emptied his coin bank and made a bar graph of the numbers of each type of coin the interval he was 5 coins If graph showed 5 intervals of quarters, 2 intervals of dimes,3 intervals if nickels and 10 intervals of pennies what was total amt of money in bank Please help
*September 24, 2013 by Daniel mom *

**Stat**

Coin box Question: Assume that there are 25 pennies, 10 nickels, 10 dimes, and 5 quarters in a box. after shuffeling the box, you pick a coin at random and note down its face value. let x represent the face value of the coin in cents. then construct the probability ...
*November 2, 2009 by BRITT*

**Statistics**

Coin box Question: Assume that there are 25 pennies, 10 nickels, 10 dimes, and 5 quarters in a box. after shuffeling the box, you pick a coin at random and note down its face value. let x represent the face value of the coin in cents. then construct the probability ...
*November 2, 2009 by BRITT*

**MATH**

Coin box Question: Assume that there are 25 pennies, 10 nickels, 10 dimes, and 5 quarters in a box. after shuffeling the box, you pick a coin at random and note down its face value. let x represent the face value of the coin in cents. then construct the probability ...
*November 2, 2009 by BRITT*

**math**

A coin bank contains $2.80 in dimes and quarters. The bank contains the same number of each coin. How many of each coin does the bank contain. I have to write an expression.
*February 24, 2015 by Twinkie*

**math**

Grandpa has twenty - four coins in his pocket . grandpa gives Sam some clues the total value of the coins in his pocket one - sixth of coins are quarters , one - half of coins in dimes . what is the total value of the coins in grandpa 's pocket that Sam should discover? Please...
*May 4, 2015 by autumn*

**Math, Fraction**

raven found 30 coins. 1/6 of them were pennies, 1/5 of them weere nickels, 1/3 of them were dimes, and the rest were quarters. tell how many of each coin.
*March 13, 2013 by Taylor Shelly*

**math**

A coin bank contains twice as many nickels as quarters, three times as many pennies as quarters, and no dimes. If the bank contains $7.60 how many of each coin does it contain ?
*September 3, 2014 by student12*

**Mah**

Adam has 4 dimes, 4 quarters and 4 nickels in his pocket. He pulls out 2 coins making sure to put the first one back in his pocket before picking the second. What are the odds that he pulls out 2 nickels? A. 1/3 B. 1/9 C. 1/16 D. 1/81
*June 29, 2015 by Anonymous*

**Probability**

1) What is the probability of tossing 6 coins and getting at least two tails? 2) Suppose you flip a penny, a nickel,a dime and a quarter. What is the probability of getting heads on the penny and nickel and dime and tails on the quarter? Please show steps for the solutions. ...
*June 4, 2010 by Kevin*

**algebra**

Jim has some nickels, dimes and quarters worth $5.30. There are five times as many dimes as quarters, and six more nickels than dimes. How many of each kind of coin does he have?
*September 9, 2014 by Charlotte*

**college**

A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 14.0 g to 100°C in boiling water and then dropped the hot coin into 29.5 g of water at T = 15.0°C in an insulated coffee-cup, and measured...
*October 18, 2010 by andrea*

**chemistry**

A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 14.0 g to 100°C in boiling water and then dropped the hot coin into 29.5 g of water at T = 15.0°C in an insulated coffee-cup, and measured...
*October 19, 2010 by jake*

**Chemistry**

A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 14.0 g to 100°C in boiling water and then dropped the hot coin into 27.5 g of water at T = 17.0°C in an insulated coffee-cup, and measured...
*October 23, 2014 by Kales*