Bria
Most popular questions and responses by Bria
Chemistry Honors 10th
How much heat is required to warm 122 g of water by 23.0 degrees Celsius?
asked on April 21, 2010 
chemistry
2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass of the compound was found to be 60. a)What are the masses of carbon, hydrogen and oxygen in 2.4g of the compound? b)What are
asked on October 20, 2013 
Chemistry
You have two gasfilled balloons, one containing He and the other H2. The H2 balloon is twice the size of the He balloon (let the He balloon have a volume of 1 L and the H2 balloon. a volume of 2 L). The pressure of gas in the H2 balloon is 1 atm while
asked on February 19, 2012 
Math
A new law requires that 12% of an individual's income be invested in the stock market. Your accounts show that you need to put $420 in the stock market this year. How much did you earn this year. My Guess is 3,500% But Its a guess i would like to know how
asked on March 4, 2019 
precalculus
After 3 hours the number of bacteria in a culture is observed to have doubled. Find the number of bacteria present after 8 hours.
asked on October 21, 2014 
Chemistry
Write the net ionic equation for the precipitation reaction between ammonium sulfide and cadmium nitrate.
asked on March 4, 2012 
math
I hope i am on the right track. Please look at my answer so I am doing correctly. The letters of the word mathematics are written on separate pieces of paper and put in a hat. What is the probability of drawing a vowel from the hat? (vowels are a, e, i, o
asked on July 7, 2012 
Physics
Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle, as shown in the drawing. The mass of the truck and its contents is 6675 kg. Find the magnitudes of the forces exerted by the ground on
asked on March 1, 2012 
probability
The letters of the word mathematics are written on separate pieces of paper and put in a hat. What is the probability of drawing the letter m from the hat? my first answer is 2/12= 1/6 someone else has 2/11 please show us the correct answer thanks!
asked on July 5, 2012 
chemistry
The KHP used in the titration with NaOH was contaminated with sodium hydrogen phyhalate (NaHC8H4O4), but you didn't know it. State the effect of the final result (falsely high, falsely low, or unaffected) Explain. thanks These problems must be reasoned
asked on September 20, 2006 
precalculus
After 3 hours the number of bacteria in a culture is observed to have doubled. Find the time that it takes the culture to grow to 30 times its initial size.
asked on October 21, 2014 
chemistry
2.4g of a compound of carbon, hydrogen and oxygen gave on combustion, 3.52g of CO2 and 1.44g of H2O. The relative molecular mass of the compound was found to be 60. a)What are the masses of carbon, hydrogen and oxygen in 2.4g of the compound? b)What are
asked on October 20, 2013 
chemistry
A buffer is formed by mixing 100 mL of 0.2 M HClO2 and 200 mL of 0.7 M KClO2. What volume of 0.2 M KOH can be added before the buffer capacity is reached?
asked on March 2, 2011 
Math
Using the expression 56xy + 5 6x + y/20,find the following: a. Find two sums. b. find the terms of the expression. c. find a product of two factors. Find the coefficient in the product. d. Find the quotient. This is to hard. Where do I start?
asked on March 12, 2015 
Math
The mean of five numbers is 8. If one of the numbers is removed from the list, the mean becomes 7. what is the number that was removed. I could not figure this out.
asked on July 14, 2012 
chemistry
If a solution of 0.10 M silver nitrate, AgNO3, is slowly added to a solution containing 0.010 M potassium iodate, KIO3, and 0.20 M sodium bromate, NaBrO3, what precipitate will form first. Will this precipitate form nearly completely (99%) before the
asked on September 13, 2006 
chemistry
HCl is titrated with NaOH. When doing the titration, some of the NaOH splashed onto the inside surface of the Erlenmyer flask, and you forgot to rinse it into your sample. Would the systematic error be falsely high, low, or unaffected and why? Thanks. As I
asked on September 17, 2006 
MPG
a passenger car will go 525 miles on 17.5 gallons of gasoline in city of driving. what is the rate miles per gallon?
asked on February 17, 2011 
Math
Which best describes the relationship between the lines with equations 8x+y=6 and 16x+2y=0 (a) perpendicular (b) parallel (c) same line (d) neither parallel nor perpendicular
asked on September 4, 2007 
chemistry
HCL is tritrated with NaOH. KHP is then added. A possible source of systematic error in this experiment is failure to dry the KHP. If this occured, would the final wt% NA2CO3 be falsely high, falsely low, or unaffected. Give reasoning. Thanks. You have
asked on September 6, 2006 
English/Reading
Who made use of Hester Prynne's skilled needlework? Why?
asked on March 7, 2019 
math
Suppose 48% of the general population of thw world has blood type O, 27% blood type A, and 23% blood type B. a. what is the probability that someone has type AB blood( assume that there are only four blood types? b. Of tjere are 30 people in a room,how
asked on July 12, 2012 
chemistry
We are determining the molarity of HCl by titration of HCl. What would be the complete equation and the net ionic equation? THanks What are you titrating it with? Won't that make a difference in the equation we write? It's titration of HCl with NaOH.
asked on September 17, 2006 
Business
After defining the scope of the system, the next step is to: a) conduct a feasibilty study. b) determine requirements. c) form the project team?
asked on June 5, 2017 
chemistry
Calculate the ionic strength of the solution. a) 100 mL of 0.8M magnesium perchlorate, Mg(ClO4)2, is added to 900 mL of 0.30M perchloric acid, HClO4. No reaction. B)25 mL of 0.200M potassium iodide, KI, are mixed with 75 mL of 0.0300 M silver nitrate,
asked on September 8, 2006 
chemistry
I have to find the weight percent of Na2Co3 for my lab report that's due tomorrow but I have no idea how to do it. In the lab I had to wdight 0.4 g of the unknown soda ash sample into an erlenmyer flask and add about 50 mL of deionized water. Then I had to
asked on September 20, 2006 
statistic
what type of correlation would you expect to exist between people's height and their shoe size? My answer is a positive correlation.
asked on July 12, 2012 
oz
IT TAKES 60oz of grass seed to seed 2400ft^2 of lawn. at this rate, how much will be needed for 4400ft^2 of lawn?
asked on February 17, 2011 
notation
precent notation of 5/8
asked on February 17, 2011 
Math
What is the cardinal number for the follwing sets? 1). 101,102,103,104,....121 2). (1,2) (101,102) (0,105)
asked on December 11, 2008 
english
on my first babysitting job ,I found that one must have____patience to take care of young children
asked on November 3, 2013 
Geometry
Find the surface area of a cylinder whereas diameter is 9 ft and height is 24 ft
asked on March 28, 2013 
math
1. A card is drawn from an ordinary deck of 52 playing cards. What are the odds in favor of drawing an ace? 2. The letters of the word mathematics are written on separate pieces of paper and put in a hat. What is the probability of drawing a vowel from the
asked on July 4, 2012 
world history
The animating principles of Benedict's rules for monks are the quest for salvation and
asked on April 26, 2012 
10th grade
HOW DO YOU YOU ADD ALL THE HEARD MATH WITH THE EASY
asked on September 30, 2010 
idk, math i guess
if the average person drinks 8(8 oz.) glasses of warter per day,rather than a person who drinks 12 8 oz. of warter after a morning excersise session has consumed what fraction of the daily average?.
asked on July 14, 2010 
math
what fraction of 1 liter is 1 milliliter?
asked on February 5, 2010 
math
1).Write the first five terms of the sequence whose nth term is 10n1. 1ST_ 2ND_ 3RD_ 4HT_ 5TH_
asked on December 11, 2008 
Math
What is the cardinal number for the following sets? A) 101,102,103,104,.......121 B) (1,2), (101,102), (0,105)
asked on December 11, 2008 
math
what is 121 divided by 4(8  2)!
asked on October 18, 2008 
statistic
1.The state highway patrol stops every 5th car on highway 210 to check drivers' licenses and registrations. Which sampling technique are they using? systematic sampling chose this one convenience sampling cluster sampling simple random sampling stratified
asked on July 13, 2012 
statistic
Which "average" would be best to use in the following situation? The accountant for a small company is asked to determine the average salary of its employees. The company is owned by two brothers who each make over $300,000 per year. The accountant makes
asked on July 12, 2012 
commission rate
a salesperson earns 150 commission selling 3,000 worthof television sets. what is the commission rate?
asked on February 17, 2011 
9th grade
you push a book on a table so that its velocity is constant. If the force you apply is 15 N, what is the force due to sliding friction
asked on November 1, 2010 
math
i am a threedigit number. i am made up of three different numerals. i am divisble by eleven.
asked on September 10, 2009 
fractions URGENT!!!!!!!!!!!!!!!
Is 2/3 the smallest out of 1/3? Are you asking if 2/3 is smaller than 1/3? If that's your question, the answer is no. If that's not your question, please rephrase so teachers will understand. Thanks. =)
asked on February 26, 2007 
geography
List as many ways as you can remember about how you are involved in the burning of fossil fuels on a dily basis.
asked on July 8, 2014 
probability
3. A bag contains five different lightbulbs. The bulbs are the same size but each has a different wattage. If you select three bulbs at a random,how many different outcomes will be in the sample space if the bulbs are selected without replacement? I
asked on July 15, 2012 
math
Tom plans to purchase a used car for $18,450. The dealership will finance his purchase at 10.5% APR for 48 months. Calculate the amount of Tom's monthly payment if he makes a down payment of $3,450 on the car
asked on July 6, 2012 
math
How much interest will you earn on $5,000 if you invest the money in a 5year certificate of deposit earning 3% compounded quarterly. Round your answer to the nearest cent.
asked on July 6, 2012 
Math
The cost for a 30second ad during the 2010 Super Bowl was $2.8 million. Assuming the rate per second to be constant, what was the average cost per ad that was broadcast during the Super Bowl in 2010? Express your answer as a whole number to the nearest
asked on February 13, 2011 
chemistry
The percentage of phosphourus in a detergent product may be determined by sample treatment including the precipitation of magnesium ammonium phosphate MgNH4PO4*6H2O (MW=245.41), using an excess of both magnesium and ammonium ions. The separated ans washed
asked on September 12, 2006 
math
If the the total enrollment in LA county combined schools was 1,583,283 students in 1997, approximately how many of those student were Asian at 8.1 8.1% choices: 194,467, 904,055, 128,246 , 19,546,704, 1,282,459 my answer is 128,246 multiplied
asked on July 15, 2012 
TI 84 Plus
How do i get to the regression equation on the ti84 plus calculator. I am working on a math problem trying to view my equation once i plugged in the data
asked on July 13, 2012 
statistic
If the total enrollment in LA County Combined schools was 1,583,283 students in 1n 1997, approximately how many of those students were Asian. Other =2.70% White =20.30% Black =11.80% Asian = 8.10% Hispanic 57.10% answer: I multiplied
asked on July 13, 2012 
statistic
The data below represent the ages of female actors at the time of winning an Oscar (1956  1996). 41 27 34 34 41 30 61 42 49 27 31 60 34 35 74 21 29 39 39 37 61 26 31 33 41 33 38 30 26 37 41 49 26 35 28 24 35 42 33 38 81 45 What is the frequency for the
asked on July 12, 2012 
Probability
If a women with a BMI below 25 are considered to be normal weight, how many of these women would be classified as overweight? If you choose a woman at random, what is the probability that she will be overweight. Chart below BMI Frequency 15.019.9 9
asked on July 11, 2012 
math
If your class has 10 males and 14 females in it, how many different committees consisting of 4 males and 4 females may be chosen.
asked on July 4, 2012 
math
find the fracton notation for the ratio 73/88
asked on February 18, 2011 
math
(x/8)+ (x/8)= 9/8
asked on September 5, 2010 
statistics
last year houston hospital averaged 98 births a month with a standard deviation of 6 january reported 107 birhts. how does the number of birhts in january compare to the average
asked on April 8, 2015 
math
2x^2+7x+3/x^22x15
asked on March 7, 2013 
statistic
age days in hospital 40 11 36 9 30 10 27 5 24 12 a. draw a scatter diagram (completed) b. does there appear to be a correlation between age and number days in the hospital? no Find the r value for this problem to verify your answer? R=.16 c what is the
asked on July 14, 2012 
statistic
age days in hospital 40 11 36 9 30 10 27 5 24 12 a. draw a scatter diagram (completed) b. does there appear to be a correlation between age and number days in the hospital? no Find the r value for this problem to verify your answer? R=.16 c what is the
asked on July 13, 2012 
statistic
Choose ALL that represent quantitative data. the amount of time you spend studying each week your street address how many years you have owned your car the company that you use for cell phone service the number of people who live with you your score on the
asked on July 12, 2012 
math
Mary has seven decorative vases to arrange on a shelf. How many different arrangements are possible?
asked on July 6, 2012 
P I
the amount in a savings account increased from $60 to $84. what i sthe precent increase?
asked on February 17, 2011 
algebra
6m+3/11=7
asked on January 20, 2011 
math
The sum of what 2 prime numbers equals 16?
asked on January 4, 2009

Math
thx so much R_scott :)
posted on March 4, 2019 
Chemistry
972 ppm
posted on December 12, 2017 
social studies
what would be the highest point and lowest ob a topographic map?
posted on November 29, 2017 
Microeconomics
IDK??????
posted on September 3, 2015 
Math
about 300 million
posted on April 24, 2015 
math
need help
posted on March 7, 2013 
math
okay my answer is correct 128,246
posted on July 15, 2012 
probability
i figured it out 5*5*5=125
posted on July 15, 2012 
probability
i typed the wrong answer it is 125
posted on July 15, 2012 
Math
thanks for the explaning it. I understand that much better
posted on July 14, 2012 
statistic
thanks!
posted on July 12, 2012 
statistic
except for the company you use for your cell phone I meant to take that out.
posted on July 12, 2012 
statistic
I guess to look at it would fall into the salary range. i was looking at average is how i got my answer thanks!
posted on July 12, 2012 
statistic
thanks i am getting it
posted on July 12, 2012 
Probability
thanks!
posted on July 12, 2012 
math
ok, I understand now thanks!
posted on July 12, 2012 
math
4/11 got it thanks!
posted on July 7, 2012 
math
2/11 got it
posted on July 7, 2012 
math
thanks
posted on July 6, 2012 
probability
11 in mathematics so 2/11
posted on July 5, 2012 
math
the factors of 8 that she can roll are 4,8,and 8 there are 6 sides to the cube therefore six posibilites total so 3/6 chance because 2/6 chance of rolling 8 and 1/6 chance of rolling 4 2/6 +1/6=3/6
posted on March 1, 2012 
arithmetic
21terms/3terms=7groups of 3terms 237(last group)129 (middle group)=36 237(group7)36=201(group6) group636 group536 129(group4)36=95(group3) group336 group236 add up all group terms(237+201+165...) Hope that's what your looking for if not sorry, but
posted on March 1, 2012 
Chemistry
ok so for the second part this is what I did. 0.082=x/4=0.328g 0.08969=x/2=0.179g I feel like I have done something wrong though
posted on February 19, 2012 
Chemistry
Ok so for the first part I got x=0.08969 for H2 and x=0.082 for He. but how do I convert to molecules? Working on the second part now
posted on February 19, 2012 
3rd grade
24
posted on September 19, 2011 
Mathgeometry
f t t f f
posted on July 21, 2011 
8th grade
how does a rodeo star get around
posted on November 21, 2010 
idk, math i guess
is it 1/3
posted on July 14, 2010 
idk, math i guess
its not homework a family bet.....thnk you
posted on July 14, 2010 
idk, math i guess
my uncle said wat is the anwser please (he is a middle school drop out)
posted on July 14, 2010 
idk, math i guess
ms sue
posted on July 14, 2010