Saturday
February 25, 2017

Posts by chloe

Total # Posts: 573

Math
is it correct?
May 8, 2014

Steve, Anonymous,
(a) 4/16 * 7/16 = 0.109375 (b) 4/16 * 7/15 = 0.11666666666
May 8, 2014

Steve,
(a) 4/16 * 7/16 (b) 4/16 * 7/15 I need to find the answer?
May 8, 2014

Math
***PS: I can't put the diagram so I type it.*** The diagram below shows the contents of a jar from which you select marbles at random. Inside the jar there is 16 marbles. Inside the jar there is 4 red marbles. 7 blue marbles. 5 green marbles. a. What is the probability of ...
May 8, 2014

Math
Thanks!
May 8, 2014

Math ~ Check Answers ~
Is this correct? total bands: 185 P(pink) = 95/185 P(brown) = 90/185
May 8, 2014

Math
A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...
May 8, 2014

Math
A box contains 95 pink rubber bands and 90 brown rubber bands. You select a rubber band at random from the box. Find each probability. Write the probability as a fraction in simplest form. a. Find the theoretical probability of selecting a pink rubber band. b. Find the ...
May 7, 2014

physics
find the moment of inertia of the earth. Radius is 6,000 km and mass is 6 x 10^24 kg
May 6, 2014

Math
You have to choose a battery brand to use in your smoke alarm. Company A's batteries have a mean lifespan of 1.2 years, with a standard deviation of 0.1 years. Company B's batteries have a mean lifespan of 1.5 years, with a standard deviation of 0.9 years. Which brand ...
April 29, 2014

Permutations
1. 4! a.) 3 b.) 6 c.) 12 d.) 24****** 2. 5! a.) 25******** b.) 120 c.) 250 d.) 625 5. Five friends are having their picture taken. How many ways can the photographer arrange the friends in a row? a.) 150 b.) 100 c.) 120******* d.) 80 6. How would you apply the fundamental ...
April 25, 2014

Math ~ Check Answers ~
A number cube with the numbers 1 through 6 is rolled. Find P (number is greater than or equal to 3). a.) 4/6 b.) 1/6 c.) 2/6********** d.) 5/6
April 23, 2014

state of matter
why solid is the least amount of energy?
April 22, 2014

Math ~ Check Answers ~
1. There are 35 marbles in a bag: 9 blue marbles, 8 green marbles, 4 red marbles, 8 white marbles, and 6 yellow marbles. Find P (red). Write the probability as a fraction in simplest form, a decimal, and a percent. a.) 4/31, 0.129, 12.9% b.) 4/35, 0.114, 11.4%*********** c.) ...
April 21, 2014

Chemistry
I understand now, thanks a lot!
April 20, 2014

Chemistry
Given the equilibrium reaction N2(g) + 3 H2(g) <---> 2NH3(g) + heat, an increase in temperature will: a) Increase the value of K b) Decrease the value of K c) Increase or decrease the value of K depending upon the concentration of reactants d) Will have no effect on the ...
April 20, 2014

Chemistry
If the equilibrium constant for a reaction A + B <----> C + D is K, which is true of the equilibrium constant K* for the reaction C + D <----> A + B under the same conditions? A) K* = K B) K* = 1/K C) K* = 1 - K D) K* = 1 - (1/K) E) K* = 1 + K
April 20, 2014

Planets- I Love Space!
why the outer planets did not lose the lighter gases in their atmospheres.?
April 14, 2014

Chemistry
Na, Ca, Zn, Al, Mn
April 10, 2014

Pyhsics
8.3x10^3m
April 10, 2014

Math ~ Check Answers ~ASAP
3. In the following list of data, find the range: 21, 28, 31, 35, 39, 43, 51, 60. 35 37 39****** 40 Pat recorded the weights of the first 10 fish she caught and released at Mirror Lake this season. The weights were 8 lb, 6 lb, 9 lb, 6 lb, 7 lb, 5 lb, 7 lb, 6 lb, 23 lb, and 6 ...
March 20, 2014

Science
1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <...
March 17, 2014

Science -Check Answers-
1. In the following diagram, the green ball changes direction after colliding with the red ball because the red ball has more momentum. True <---- False 2. What is the momentum of a 20.0 kg scooter traveling at 5.00 m/s. 4.00 kg m/s 20.0 kg m/s 25.0 kg m/s 100 kg m/s <...
March 17, 2014

Math ~ Check Answers ~
So... is the 1st one is correct? A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. •3.8 ft^3 •60 ft^3 <<<<<< •15 ft^3 •10....
March 12, 2014

Math ~ Check Answers ~
A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. •3.8 ft^3 •60 ft^3 <<<<<< •15 ft^3 •10.4 ft^3 A pyramid has a height of...
March 12, 2014

Science
1.b 2.c 3.c 4.d 5.d 6.a 7.b 8.c 9.d 10.c I just took this quiz so all these are correct
March 5, 2014

Math
The diameter of a circular pizza is 24 in. How much pizza is eaten (in square inches) if half of it is consumed?
March 3, 2014

Algebra 2 Help
1.) Solve for x. 2x(x - 12) = -40 2.) Solve for x. 3x2 + 2x = 12 - 7x 3.) Simplify the expression. 8sqrt[-63] 4.) Find the absolute value of the complex number. Abs Val [7 + 24i] 5.) Simplify the expression. [4 - 7i] + [2 + 3i] Thank you so much!! :)
February 28, 2014

Algebra 2
1.) Solve for x. 2x(x - 12) = -40 2.) Solve for x. 3x2 + 2x = 12 - 7x 3.) Simplify the expression. 8sqrt[-63] 4.) Find the absolute value of the complex number. Abs Val [7 + 24i] 5.) Simplify the expression. [4 - 7i] + [2 + 3i] Thank you so much!! :)
February 28, 2014

Math
4 pictures
February 28, 2014

Math ~ Check Answers ~
? ? ? ? ? ? ? ? A system of linear equations is shown below. 5X = 3y - 2 y = X + 4 What is the x -coordinate of the solution? a.) 2 b.) 4 ***** c.) 5 d.) 1 Jean needs to graph the function below. y = 7x ^2 + 8x -6 How many times should the graph of this function intersect the ...
February 18, 2014

Math ~ Check Answers ~
A system of linear equations is shown below. 5X = 3y - 2 y = X + 4 What is the x -coordinate of the solution? a.) 2 b.) 4 c.) 5 d.) 1 ***** Jean needs to graph the function below. y = 7x ^2 + 8x -6 How many times should the graph of this function intersect the x-axis? a.) 3...
February 18, 2014

Social Studies--Check My Answers Please--
OK, thanks guys!
February 14, 2014

Social Studies--Check My Answers Please--
1. During the election of 1824, which candidate won the popular vote and which candidate won the presidency? a.) Andrew Jackson; John Quincy Adams ***** b.) Andrew Jackson; Andrew Jackson c.) John Quincy Adams; John Quincy Adams d.) John Quincy Adams; Henry Clay 2. Some ...
February 14, 2014

Social Studies--Check My Answers Please--
7. "In 1831 Lowell was little more than a factory village. Several corporations were started, and the cotton-mills belonging to them were building. Help was in great demand; and stories were told all over the country of the new factory town, and the high wages that were ...
February 13, 2014

Social Studies--Check My Answers Please--
OH Ms. Sue I have 3 more can you also check them too?
February 13, 2014

Social Studies--Check My Answers Please--
Oh really, Wow! OK, then. Thanks Ms.Sue! for checking!
February 13, 2014

Social Studies--Check My Answers Please--
Are my answers are correct? Please check them! 1. Which of the following helped to increase the populations of northeastern cities? A) More diversity B) successful cotton crops C) growth of factories and trade***** D) building of the Erie Canal 2. A boundary was set between ...
February 13, 2014

Chemistry
Yep, I caught it. Thanks for your help!
February 11, 2014

Chemistry
It makes senses that the molar mass would be smaller than that of CH4 if it diffuses faster. 1/2 = square root of 22/88 = 22 g/mol ?
February 11, 2014

Chemistry
I used the formula given and came up with 352 g/mol, would that be correct?
February 11, 2014

Chemistry
A gas diffuses twice as fast as CF4 (g). The molecular mass of the gas is: I'm not sure how to figure this out without the rates of diffusion.
February 11, 2014

Math
if a 16 ounce can of soup costs 64 cents, what is the cost for each ounce of soup?
January 29, 2014

Earth Science
partial freezing
January 16, 2014

history
thanks
January 7, 2014

Math
Three of these methods give the correct area of the figure. Which method does NOT?
December 10, 2013

physics
A 5.0 kg \rm kg, 52-cm \rm cm-diameter cylinder rotates on an axle passing through one edge. The axle is parallel to the floor. The cylinder is held with the center of mass at the same height as the axle, then released. a)What is the magnitude of the cylinder's initial ...
December 6, 2013

SS again please help me asap
A Spycrab, you are a life saver! thank you for the 100%
November 21, 2013

Alg 2
It did help. Thank you so much! cx
October 25, 2013

Alg 2
The value of y varies directly with x. If y = 64 when x is 16, what is x when y is 288?
October 25, 2013

English
In the following sentence identify the appositive or appositive phrase and the noun or pronoun defined by the appositive. Mr. Murray, the Scoutmaster, likes to hike. Appositive? Noun or pronoun defined?
October 1, 2013

Chemistry
How to calculate Q in Nernst Equations, we used 0.10M solutions in all of our half cells. Nernst equation: Ecell = E0cell - RT/nF ln Q Overall reactions: Cu(s) + Pb2+(aq) ~ Cu2+(aq) + Pb(s) and 3Pb(s) + 2Al3+ ~ 3Pb2+ 2Al(s) Thank you!
May 14, 2013

Chemistry
Using your experimental data, calculate E0cell. Standard voltaic cells contain 1M solutions, but we used 0.10M solutions in all of our half cells. Use the Nernst equation to calculate the standard cell potential (E0cell) from your measured Ecell and Qrxn. Data: Nernst Equation...
May 14, 2013

Math
An airplane is flying at an altitude of 6 miles and passes directly over a radar antenna. When the plane is 10 miles away, the radar detects that the distance is changing at a rate of 240 mph. what is the speed of the plane? This is an implicit differentiation problem
May 13, 2013

chemistry
No. this is the sample I did. Cu+(s)+/Cu2+aq)//Al3(aq)+/Al(s) is this right? Anode = Cu+(s)+/Cu2+(aq) - +0.337 Cathode = Al3+(aq)+/Al(s) - -1.66 Overall redox reactions: -0.337 - -1.66 = 1.323?
May 8, 2013

chemistry
A. Find and list all of the different half- cell combinations. Hint 15 combinations! 1. Copper/ Cu2+ 2. Lead/ Pb2+ 3. Magnesium/ Mg2+ 4. Zinc/ Zn2+ 5. Iron/Fe2+ 6. Aluminum/ Al3+ B. write the half reactions of each combination and the overall redox reaction. Please help! Thank...
May 8, 2013

Chemistry
What is the Ka of the amino acid serine if it is 34.5% dissociated at pH- 9.46?
May 4, 2013

Chemistry
ok thank you!
April 30, 2013

Chemistry
dG=? . how do I start this problem? Do I use dG= -RT*ln*K? dG=-(0.008314 kj/k*mol) (61+ 273.15) ln (29.24)?? I tried this and it is wrong.
April 30, 2013

Chemistry
DrBob222, I don't know how to solve this problem either. And yes, this is the question for this problem. I even double check it. Please help. Chloroform (CHCL3) has a normal boiling point of 61 'C and an enthalpy of vaporization of 29.24 kJ/mol. What is the value of ...
April 30, 2013

Chemistry
Chloroform (CHCL3) has a normal boiling point of 61 'C and an enthalpy of vaporization of 29.24 kJ/mol. What is the value of delta Gvap (in kJ) at 61'C for chloroform?
April 30, 2013

Chemistry
I realized where I made a mistake for this problem. This time, I got this one right. Thank you so much!
April 30, 2013

Chemistry
The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you! Chemistry - DrBob222, Tuesday, April 30, 2013 at 12:31am dG = dHvap - ...
April 30, 2013

Chemistry
At 20 degree celsius, Ka for an unknown monoprotic weak acid is 0.00088. Calculate the Delta G (in kJ/mol) for the reaction of this unknown acid with water. HA(aq) + H2O(l) <--> H3O+(aq) + A-(aq)
April 30, 2013

chemistry
Calculate the enthalpy of fusion of naphthalene (C10H8) given that its melting point is 128 Celsius and its entropy of fusion is 47.7 J (k*mol) .
April 29, 2013

chemistry
Given that for the vaporization of benzene Hvap= 30.7 kj/mol and Svap= 87.0 J(K * mol) , calculate Delta G (in kJ/mol) for the vaporization of benzene at 13 Celcius.
April 29, 2013

Chemistry
The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you!
April 29, 2013

Chemistry
Calculate the molar solubility of MgCO3 in a solution that already contains 1.7×10−3 M sodium carbonate. MgCO3 Ksp = 6.82 x 10-6 IMPORTANT NOTE: You must use the quadratic equation to solve this problem. (DrBob222- thank you so much for all your help!)
April 26, 2013

Chemistry
how did you get (that's 0.17M x 1/2 = 0.085M)
April 24, 2013

Chemistry
What is the ph at the equivalence point for a titration of 250 mL of 0.17M piperidine with 0.17 M nitric acid. (piperidine: Kb = 1.3 x 10-3)
April 23, 2013

Chemistry
Consider the titration of 41.2ml of 0.230 M HF with 0.220 M NaOH . Calculate the ph after the addition of 11.9ml of sodium hydroxide.(HF: Ka = 3.50 x 10-4) Please, I need step by step on on how to solve this type of problem. Thank you very much!
April 23, 2013

Chemistry
A 17.6ml sample of a monoprotic acid is titrated with 0.212M NaOH. If 69.2ml of base is required to reach the equivalence point, what is the concentration of the acid?
April 19, 2013

social studies
what wiped out most of the indigenous population of australia
April 8, 2013

Physics
Sammy Sosa
March 19, 2013

Math
There are 16 cubic boxes of erasers in a case. What are all the possible dimensions for a case of erasers ? please help need in 30 minutes or less so confused help please thanks
March 10, 2013

math
2 minutes because 8 divided by 4 = 2
March 5, 2013

math
12
February 27, 2013

Chemistry
what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol
February 26, 2013

Chemistry
what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol
February 26, 2013

Chemistry
what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol
February 26, 2013

Chemistry
what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol
February 26, 2013

CSU
what is the freezing point of 16.7g of LiCl in 136g of water, assuming complete dissociation for water kf= -1.86/mol
February 26, 2013

Math-grade 4
thank you ms. sue.my mom said the same thing.
February 4, 2013

Math-grade 4
I have 12 with a remainder of 3. my teacher wants us to round and estimate. please help! do I round it to 7 divided by 70?
February 4, 2013

Math-grade 4
what is the estimated quotient of 6 divided into 75?
February 4, 2013

math
I don't know
January 28, 2013

math
katie is 4 years younger than sylvia. let k represent katie's age and let s represent slyvia's age.
January 22, 2013

Math
lilly is correct, not rae.
January 16, 2013

algebra
It's m-3
January 9, 2013

MATHS
Is there any reason why f(g)=g^2+3 why do we replace the x with g? Sorry steve im trying my hardest to understand this
December 19, 2012

MATHS
Thank you steve It says i need to find f(g), i got a different result for some reason help please! And also in the second part, how did you get g^-1 = (x-1)/2 Thank you steve x
December 19, 2012

MATHS
Critical help please. Level 3 maths algebraic methods is really hard. Q) Two functions f and g are defined by f:x (arrow) x^2 + 3 g:x (arrow) 2x+1 Find a) the function fg b) solve the equation f(x)=12g^-1(x) I need to show my working out, please help someone
December 19, 2012

Algebra 1
Which one is it? A or D?
December 18, 2012

Maths
If tom got 200 euro for his birthday. He spent 1.0 how much did he spend?
December 6, 2012

English
What type of poem is this ? We found his flag one bitter morning And knew our hopes had come to woe. We had come pursuing glory But ended freezing in the snow. 1. The stanza of the poem offers an example of (1 point) slant rhyme. end rhyme. perfect rhyme. * internal rhyme. I ...
December 5, 2012

science
your a poo
October 24, 2012

Math
Mrs. Yale wrote a number between 35 and 48 on her board. The sum of the digits is 7. What number did Mrs. Yale write on her board?
October 23, 2012

Chemistry
3.95x10^-22
October 16, 2012

health
is it A??
October 5, 2012

English
Yes, I know what similes and metaphors are. My question is where are their examples of similes and metaphors in the story?
September 18, 2012

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