Saturday
August 30, 2014

Posts by Kevin


Total # Posts: 938

geometry
in traingle FGH, angle 42 is equal to 42 and an exterior angle at vertex H has a measure of 104. What is angle G?
February 13, 2012

Physics
C = epsilon0*A/d = 8.85*10^-12*0.849/0.001 = 7.51*10^-13 farads Your steps are correct but your answer is miscalculated.
February 11, 2012

algebra 1
USING EQUATIONS THAT FACTOR How to turn fifteen more than the square of a number is eight times the number into an equation.
February 9, 2012

geometry
7x over 5 = 42 over 3
February 8, 2012

Chemistry
972
February 7, 2012

Chemistry
If a 45.3-g sample of potassium nitrate is dissolved in enough water to make 225 mL of solution, what will be the molarity?
February 2, 2012

Titration Graph?
Use a spreadsheet to prepare a family of graphs for the titration of 50.0 mL of 0.020 M H2A with 0.100 M NaOH. Consider the following cases: (a) pK1 = 4.00, pK2 = 8.00; (b) pK1 = 4.00, pK2 = 6.00; (c) pK1 = 4.00, pK2 = 5.00.
January 23, 2012

MATH
Again $25 :P
January 22, 2012

MATH
Wait my mistake i mean regular price %25
January 22, 2012

MATH
The regular price is $20. The sale price is $20. What is the discount rate?
January 22, 2012

English
Please check.
January 9, 2012

English
imperative mood
January 9, 2012

English
indicative mood
January 9, 2012

English
What is the verb mood of the sentence? Wear your coat when you are in the snow. indicative mood imperative mood subjunctive mood
January 9, 2012

English
present progressive
January 9, 2012

English
What is the tense of the underlined verb in the following sentence? "I will be studying his painting techniques this summer." present emphatic present perfect progressive future progressive present progressive under lined verb ( will be studying)
January 9, 2012

English
Please check my answer.
January 9, 2012

English
In the following sentence, what kind of phrase is "Moving away"? "Moving awat made my little cousin sad." prepositional gerund infinitive participle
January 9, 2012

English
Please check.
January 9, 2012

English
predicate adjective
January 9, 2012

English
"The grain of the western prairies is a major source of income." direct object indirect object predicate nominative predicate adjective Choose the answer that correctly identifies the underlined word. (source)
January 9, 2012

English
Please check.
January 9, 2012

English
predicate nominative
January 9, 2012

English
predicate adjective
January 9, 2012

English
"Western Canada also gives us the part of the Kwakiutl Indians." direct object indirect object predicate nominative predicate adjective Choose the answer that correctly identifies the underlined word. (us)
January 9, 2012

English
Please check for me.
January 9, 2012

English
participal
January 9, 2012

English
In the following sentence, what kind of phrase is " to play basketball"? "Porpoises have been to play basketball."
January 9, 2012

English
Can someone please check my answer.
January 9, 2012

English
In the following sentence, what kind of phrase is " to the library"? "I will be going to the library soon."
January 9, 2012

math
Jeremy can type 144 words in 144 min. How many words can he type in 10 min at the same rate. Show work
December 30, 2011

math
swimsuit discounted 65% on sale for $20.30
December 18, 2011

math
70 pennies decreased by 20%
December 18, 2011

science
how adipose tissue function when nutrients are plentiful and scarce. Describe what happens to this tissue during a weight loss program and why it’s difficult to keep the lost weight off. Discuss liposuction and state if this is a good method to decrease the amount of ...
December 18, 2011

math
42 customers increased by 50%
December 18, 2011

College Algebra
using the knowledge of systems of equations, and that the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius. Find the equation of a circle that contains the following points: (6,2), (4,6), and (-3,5). (These 3 points each create an ...
December 15, 2011

College Algebra
using the knowledge of systems of equations, and that the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center and r is the radius. Find the equation of a circle that contains the following points: (6,2), (4,6), and (-3,5). (These 3 points each create an ...
December 15, 2011

math
Find all roots of P(x)= X^4 - 7/2 X^3 + 6x^2 -28x -16
December 14, 2011

Math
5 hockey pucks and three hockey sticks cost $23. 5 hockey pucks and 1 hockey stick cost $20. How much does 1 hockey puck cost?
December 1, 2011

phi 103
. Logicians regard the following as the meaning of the word "argument
November 26, 2011

College Chemistry
What volume of 0.1125 M K2Cr2O7 would be required to oxidize 48.16 mL of 0.1006 M Na2SO3 in acidic solution? The products include Cr3+ and SO42- ions.
November 21, 2011

chemistry
4g of h2 reacts 70 g of ci2 and forms
November 16, 2011

Biochemistry (BCMB)
Waste gases containing CO2 from power stations are sometimes pumped through pools containing an aquatic green unicellular alga, such as Chlorella. Explain two benefits of this.
November 15, 2011

Physics
A high school cheerleader has a baton that is 1 meter long with a 100 gram mass on each end. Another cheerleader has a baton that is 0.5 meter long with the same mass on each end. Neglecting the mass of the rod holding the masses together, which baton will be easier to spin ...
November 15, 2011

Biochemistry (BCMB)
Why do plants go on to manufacture energy-rich sugars when they already have ATP and NADPH for chemical energy from light reactions of photosynthesis?
November 15, 2011

CHEMISTRY
well for the first one, should the answer be... K = [H2O]^2 ----------- [H2]^2 + [O2] or should it just be... K = [H2O]^2?
November 14, 2011

CHEMISTRY
(Re-post) Write the equilibrium constant expression, K, for each of the following reactions. Where appropriate, designate the K as Ksp. 2H2(g) + O2(g)<-->2H2O(g) 2Hg(l) + Cl2(g) <-->Hg2Cl2(s)
November 14, 2011

Chemistry
Write the equilibrium constant expression, K, for each of the following reactions. Where appropriate, designate the K as Ksp. 2H2(g) + O2(g)<-->2H2O(g) 2Hg(l) + Cl2(g) <-->Hg2Cl2(s)
November 14, 2011

Trig
I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(-62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin-1.5 3. cos 8x - cos 2x as a product Answer -...
November 13, 2011

trig
I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(-62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin-1.5 3. cos 8x - cos 2x as a product Answer -2sin5x...
November 11, 2011

Algebra
7.5+y<13
November 9, 2011

Algebra
7.5+y<13
November 9, 2011

Mathematics
If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
November 9, 2011

Chemistry
Calculate the solubility of AgCl in the following solution: 100mL of .004 M CaCl2
November 7, 2011

Chemistry
(Qualitative Analysis) I know this is vague, but if i had a solution of unknown cations that appear light purple, what could be the possible list of cations in the solution? I thought Mn, Ag, Cu after doing my own tests, but i am uncertain. Just on a visual analysis though, ...
November 7, 2011

Chem 152
if x moles of PbCl2(s) dissolve in 1.00L of water, how many moles of Pb2+(aq) are produced? how many Cl- produced?
November 3, 2011

Science
Technology has been used for centuries to study the ocean. Trace the history of one piece of technology. What do you think is the most important technology to study the ocean? And why do you think so?
November 3, 2011

Math
How does knowing 26=30 - 4 help you find 7+26?
November 2, 2011

English
Is "sinecure" used correctly in this sentence: He studied hard throughout college to get a sinecure job.
October 30, 2011

English
Is "impinge" used correctly in this sentence: Studying Latin every day impinged her grades in both Latin and English.
October 30, 2011

English
thanks
October 30, 2011

English
Does this sentence use "Reverberate" correctly?: The sound of thunder kept reverberated in his head.
October 30, 2011

English
Is anarchy used correctly in this sentence? : As so as the teacher step out of the class room to copys some paper the class was in a state of anarchy.
October 27, 2011

math
500x93x35+9999999999x99999999=
October 27, 2011

chemistry
(Re-posting because no one was answering chemistry questions) if you have 100mL of 0.1M acetic acid (ka = 1.8x10(-5)what is the pH after 10mL NaOH is added? I came up with an answer of 2.895, but i'm not sure if its right.
October 27, 2011

Chemistry
if you have 100mL of 0.1M acetic acid (ka = 1.8x10(-5)what is the pH after 10mL NaOH is added? I came up with an answer of 2.895, but i'm not sure if its right.
October 26, 2011

Chemistry
Ok, moving on from my last question, you have 100mL of 0.10M acetic acid with ka = 1.8x10(-5) and add 50mL (0.10M) NaOH.
October 25, 2011

Maths
This is saying that Kelly's sister is 1/2 the height of 144cm. 144/2=72cm So her sister is 72cm. if you want to convert this to inches, one inch equals 2.54cm.
October 25, 2011

Chemistry
Calculate the pH of a 100mL solution of 0.10M acetic acid ka=1.8x10(-5) i calculated the pH to be 2.87 from the square root of (1.8x10(-5) * 0.1, the negative log gives me the pH. The next question wants you to calculate the pH with 50mL HCl added. I found the pH to be 2.78 by...
October 25, 2011

nath
1/10 plus 1/10 gives you 2/10 or 1/5
October 25, 2011

statistics
The first answer is still correct based on trend so i would go with that
October 20, 2011

statistics
though if you're going off of the mean (average) week 4 would get 55 customers oddly enough the median (middle number) is 55 as well. There is no mode (most common number) to calc. average, 30+55+80=165/3=55
October 20, 2011

Chemistry
so i had to calculate the pH of a 100ml solution of .10M acetic acid (ka=1.8x10(-5) I came out to 2.87. But then, they want the pH if 50ml HCL is added. So i thought...Ka = x2/.15M, therefore the square root of .15M x 1.8x10(-5) = .00164(concentration). So -log(.00164) = 2.78...
October 20, 2011

earth
circumference of a cirle = pi x diameter. pi = 3.1415926535 (or just use pi button on calculator) Diameter = 2 x radius radius = 6380 (+620) or 7000km now you have all the info you need, plug in the numbers
October 20, 2011

Chemistry Help!!
I believe the elements with 8 electrons should be the noble gasses. Argon, Krypton,...etc.
October 20, 2011

Chemistry
Consider a 0.80M solution of HCN. The Ka of HCN is 6.2x10-10. What are the major species in solution? Calculate the pH of this solution. ----------------------------------- Ok, so i took a break, came back, and finished the problem. I have an x value of 2.23x10-5. I took the ...
October 18, 2011

Chemistry
Consider a 0.80M solution of HCN. The Ka of HCN is 6.2x10-10. What are the major species in solution? Calculate the pH of this solution.
October 18, 2011

Chemistry
What happens to the hydroxide ion concentration in aqueous solutions when we increase the hydrogen ion concentration by adding an acid? Would it be good enough to answer by stating that the OH- ion concentration decreases, lowering the pH?
October 18, 2011

Chemistry
So if i want to write the conjugate base for NH3, NH3 <--> NH2 + H(+)
October 17, 2011

Chemistry
Doing some practice problems, these are a couple of my answers. Are these written correctly? Write the conjugate acid: a)HPO4(2-) Answer: HPO4(2-) + H(+) --> H2PO4(-) b)NO2(-) Answer: NO2(-)+ H(+) --> HNO2
October 17, 2011

5th grade math
17 in the 10th
October 12, 2011

impact math
explain how you could find a decimal equivalent to 9/20
October 12, 2011

Chemistry
Consider 2 separate solutions, one of a weak acid HA and one of HCL. Assume that you started with 10 molecules of each. Draw a picture of what each solution looks like at equilibrium. Ok to my very limited knowledge on this subject so far, a weak acid at equilibrium should ...
October 11, 2011

Social studies
Can you please list so reason why the Reformation of the 16th century was a religious movement?
October 10, 2011

algebra
The actual room has an area of 166ft2 and one of the sides, s, measures 13ft. Side s corresponds to side m of your model and m = 2ft. In order for your model to have the same proportions as the actual room, what is the required area of your model room?
October 9, 2011

Technology
Can you give three examples of bad print media advertisement? Can you give me the link for the bad advertisement?
October 9, 2011

calculus
express u(t)=Tant/1+Tant in F of G
October 4, 2011

business
A loan of face value $30,000,000 is issued in bonds each face value $300. The bonds will be repaid with a bonus of 20%. 1/5th of the total capital will be repaid each year, the first payment being at the end of the 10th year. Coupons on the outstanding bonds are 7% p.a. paid ...
September 29, 2011

pls help solving 4th math
1. Explain why you would use front end estimation. Gie an example of one time you might use it. 2. Explain in words how to add 234+467. Make sure to explain regrouping, if necessary. Thanks for your help!
September 28, 2011

4th grade Math Help
1. explain why you would use front end estimation. Give an example of one time you might use it? 2. Explain in words how to add 352 + 958. Make sure to explain regrouping, if necessary? Please help! Thank you in advance.
September 28, 2011

4th grade social study
Please HELP! what is the relative location of virginia? Thanks.
September 25, 2011

Algebraic Physics
Hi, I'm having trouble with a particular homework problem. A rifle has muzzle velocity 450 m/s. If you're 53.0 m from a target the same height as the rifle, at what angle above the horizontal should you aim in order to hit the target? All help would be appreciated
September 21, 2011

Physics
Hi, I'm having trouble with a particular homework problem. A rifle has muzzle velocity 450 m/s. If you're 53.0 m from a target the same height as the rifle, at what angle above the horizontal should you aim in order to hit the target? All help would be appreciated
September 21, 2011

chemistry
thank you
September 19, 2011

chemistry
A 1.00 mol sample of N2O4 (g) is placed in a 10.0 L vessel and allowed to reach equilibrium accourding to the equation N2O4(g) <----> 2NO2(g) K = .0004 Calculate the equilibrium concentrations of N2O4(g) and NO2(g)
September 19, 2011

math
making bracelets 3 strands 4 colors how many combinations are there
September 19, 2011

Chemistry
7500cm 60sec 60min 24hr ---- x ---- x ---- x ---- 1sec 1min 1hr 1day Multiply across and divide by the bottom.
September 19, 2011

4th grade Math Help
Samuel has 1,482 baseball cards in his collecion. Maria gave Samuel 126 cards. How many cards does he have now? Explain what computation method you used and why. Please Help! Thanks Kevin
September 19, 2011

Calculus
Use the definition of continuity and properties of limits to show that the function is continues at given a. f(x)=x^2+sqrt(7-x) a=4
September 12, 2011

Maths
If f(x)=2x-3 find yhe average gradient between x=-1 and x=-2
September 8, 2011

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