Wednesday
April 16, 2014

Posts by AMANDA


Total # Posts: 1,659

Chemistry
How do you prepare a 0.4 M soultion of copper sulfate in water starting with solid copper sulfate and water?

Chemistry
I don't get this at all. A beaker with 105mL of an acetic acid buffer with a pH of 5.00 is sitting on a bench top. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.40 mL of a 0.470 M HCl solution to the beaker. How much will the pH ...

SCI207: Dependence of Man on the Environment
Give specific examples of at least two (2) production and two (2) consumption habits humans have related to material resources.

Economics
The market demand in a Bertrand duopoly is P = 15 - 4Q, and the marginal costs are $3. Fixed costs are zero for both firms. Which of the following statement(s) is/are true? a.P = $3. b.P = $10. c. P = $15. d. None of the statements associated with this question are correct. I...

algebra 2
the area of a square is numerically 165 more than the perimeter. find the length of the side

algebra 2
the height of a box is 6 inches. the length is three inches more than the width. find the width if the volume is 240 cubic inches

algebra 2
two cars leave an intersection. one car travels north; the other east. when the car traveling north had gone 15 miles, the distance between the cars was 5 mile more than the distance traveled by the car heading east.how far had the east bound car traveled?

algebra 2
a ladder is resting against a wall. the top of the ladder touches the wall at a height of 6 feet. find the length of the ladder if the lenght is 2 feet more than its distance from the wall.

algebra 2
the printed matter on a 10 by 16 centimeter page of a book must cover 0 square centinmeters. if all margins are to be the sme width, how wide should they be?

algebra 2
a triangluar garden has an area of 189 square feet. its height os 3 feet more than ots base. find the measure of the base.

Finite Math
help me this is the one problem I just cannot seem to figure out!! Without consultation, each of five organizations announces a one-day convention to be held during July. Find the probability that at least two organizations specify the same day for their convention.

Finite Math
i want help understanding how to solve the problems, not just the answers. I understand how to get the denominator, by getting the total and nCr the sample, but i cannot figure out the numerator when it comes to solving these probability problems.

Finite Math
A law firm has thirteen senior and nine junior partners. A committee of 6 partners is selected at random to represent the firm at a conference. What is the probability that at least one of the junior partners is on the committee?

Finite Math
Without consultation, each of five organizations announces a one-day convention to be held during July. Find the probability that at least two organizations specify the same day for their convention.

Finite Math
C (14,8) = 3003 C (26,8) = 1562275 1562275 - 3003 = 1559272 ANSWER= 1559272/1562275 (cannot be simplified)

Finite Math
A factory produces fuses, which are packaged in boxes of 26. Eight fuses are selected at random from each box for inspection. The box is rejected if at least one of these eight fuses is defective. What is the probability that a box containing twelve defective fuses will be rej...

Finite Math
Eight white socks and four red socks are in a drawer. If two socks are selected at random, what is the probability that both socks are the same color?

algebra 2
Factor the difference of two cubes: 5x^4y^2-40xy^5

Finite Math
An urn contains six red balls and five white balls. A sample of 2 balls is selected at random from the urn. What is the probability that at least one of the balls is red?

Programming
Write a program (pseudocode) that would calculate and display the results for the multiplication table for values ranging from 1 to 100. This what I have so far: Declare X, Y, Z As Integer Write “10 x 10 Multiplication Table” For (X = 1; X<=10; X++) For (Y = 1; Y&...

Chemistry
How many mL of 5.5 M KOH are needed to prepare 300 mL of 1.2 M NaOH?

chemistry
How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

chemistry
How do you prepare a 0.4 M solution of sulfuric acid in water starting with concentrated sulfuric acid (18 M) and water?

English
no seprate sentence

English
Sentence with: Locomotive revolting caricaturist contraband

HELPPPP ! -.-
EARTH SCIENCE ; NOBODY WANT TO HELP ME -.-

HELPPPP ! -.-
Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

Science
Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

Earth Science
Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

math
if jhonny got a raise from 4$ to$4.60 what is the precentage of increase for one hour

Physics
Calculate the net charge on a substance con- sisting of a combination of 7.2 × 1013 protons and 4.8 × 1013 electrons. Answer in units of C

algebra 1
(w^3-57w+43) / (w+8)

business
I feel like it would be - C. focus exlusively on the initial salary rather than on benefits or furture opportunities. D. name a specific salary and be firm in the fact that you could accept no less.

Math
k/5+3/20<3/10 Please help me solve this and show your work please and thank you

Math
Simplify each expression. Write answers using positive exponents. a. (7x^2y^3)(-2xy) b. (a^2b^3)^-1(a^2b^3) c.(-4m^3)^2

Math
a. -14x^3y^4 ??

Math
c. -16m^6

Math
Simplify each expression. Write answers using positive exponents. a. (7x^2y^3)(-2xy) b. (a^2b^3)^-1(a^2b^3) c.(-4m^3)^2

Math
Simplify each expression. Write answers in standard form. a. (4d-6)(-3d) b. 5g(g^2-2g+1) c. (-2q^2+q+3)-5(q^2+2q-1)

business
From what I read, I believe the answer is C.

Math
A bottle contains at least 4 times as much juice as a glass contains. The bottle contains 32 fluid ounces. Write an inequality that shows this relationship. Please help me show your work please and thank you

Chemistry
How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.

Chemistry
How much 12 M HCl do you add to 1 L of water to obtain 0.2 HCl? Use this same approach to do the math for the dilution of 5.5 M of barium hydroxide solution to 0.5 M barium hydroxide solution.

vocabulary
A. denotative B. connotative

Algebra 1
simplify the expression: (y+5)^3

Criminal Justice
Suicide is the _____ leading causes of death in the US and the ______ leading cause of people between the ages of 15-34.

Chemistry
How much carbon dioxide has to be bubbled into aqueous sodium hydroxide to obtain a solution containing 3.5 mol of sodium hydrogen carbonate?

Chemistry
You dissolve 5 g of calcium hydroxide in 2 liters of water. What is the molarity of the hydroxide ions in this solution? What is the molarity of the calcium ions in this solution?

Chemistry
How much 0.5 M HCl is needed to neutralize 5.5 kg of ammonia dissolved in 6 gal of water?

business english
I believe it's B. When I tried it in my spell Checker it only underlined ''recieved"

Algebra
SOMEONE PLEASE ANSWER MY QUESTION

Algebra
SOMEONE PLEASE ANSWER MY QUESTION

Algebra
An airplane takes off from an airport at 7:00 a.m. traveling at a rate of 350 mi/h. Two hours later, a jet takes off from the same airport following the same flight pattern at 490 mi/h. How long would it take for the two planes to meet each other?

business english
I think 19 is B. When you check any of these under spellcheck - as a tip from another post with this same question, it only underlines "recieved" therefore, a spell checker would catch that as an error because its the only word actually spelled incorrectly.

Physics
A nurse counts 76 heartbeats in one minute. What are the period and frequency of the heart's oscillations?

chemistry
what is the mass in grams of 0.0850 mol of hydrogen atoms?

physics
a speaker at a concert generates 1 x 10^-2 w/m^2 at a distance of 20m form the speaker at a frequency of 1kHz 1) calculate the wavelength of the waves emitted. b) what is the intensity level at 20m

physics
A shot putter projects the shot at an angle of 37 degrees above horizontal with a force of 980 Newtons (N). What are the magnitudes of the vertical and horizontal components of the 980 N force?

UofP
4(x-6)+6=6(x+2)-10

MATH geometry
A CRICLE HAS A DIMAETER OF 6FT. WHAT IS ITS CIRCUMFERENCE, ROUND TO THE NEAREST UNIT?

MATH geometry
A CRICLE HAS A DIMAETER OF 6FT. WHAT IS ITS CIRCUMFERENCE, ROUND TO THE NEAREST UNIT?

Physics
A plane flies at 800km/h in stationary air. The distance to be traveled is 3000km. What was the wind speed if the journey actually takes 4.0 hours?

Comm 100
What statements is true concnerning cultural context/ It involes verbal clues only It is about globalizaiton It is communicated primarily thorugh environment and nonverbal clues

physics
A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.9° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of kinetic friction...

physics
I am trying to study for my exam i have tomorrow and this type of problem keeps giving me trouble can someone please help me:: A 3.24 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=11.8N at an angle theta=23.0degrees above the hor...

chemistry
What volume of hydrogen gas is produced when 19.6 g of sodium reacts completely according to the following reaction at 25oC and 1 atm? sodium (s) + water (l) sodium hydroxide (aq) + hydrogen (g)

Comm 100
Amanda sits in the seat right next to another person in a movie theater full of empty seats. The other person gets up and moves to another row. According to the expectancy violations model, the other person responded to Amanda's behavior by ________.

math
7

Physics
include the steps too please!

Physics
Calculate the force of gravity on a 2 kg mass at Earth’s surface. The mass of Earth is 6 * 10 ^24 kg, and its raidus is 6.4 * 10 ^ 6.

SAT
How does the SAT motivate students?

pre calc
Simplify csc x - cos x cot x

pre calc
If tan theta=-3/4 and 90°<theta<180° Then find cos theta

pre calc
If csc A=2 find the value of sin A

SAT
What are some reasons to why the SAT is fair?

principle of management
couldn't it be organzing? "B"

world history
Political instability between competing states during the period from 1000 to 500 B.C.E. led to A. advances in technology. B. a decrease in trade. C. a decline in new religious practices. D. fewer opportunities for new ideas about society.

College Algebra
Find X such that the point(x,9) is 10 units from (9,3)

English
Tell me everythings thats up there

English
10 words of merry things 3 words of frosty things 10 words of musical gifts 9 words of things with bells

chemistry
An endothermic reaction was found to have an activation energy of 100 kJ. If this reaction is reversed, the activation energy is only 20 kJ. What is the value of delta H for the endothermic reaction?

chemistry
In an exothermic reaction, delta H was found to be -40 kJ, and the activation energy to be 30 kJ. What would be the activation energy of the reverse reaction?

business math
$12916.70

history
I just did this test, the correct answer is D.

Geometry
How do I determine if a quadrilateral is a parallelogram? Does anyone know the formula to determine this because I have to justify my answers. Thanks.

psychology
The task is to redesign Milgram's experiment so no one is hurt, physically or emotionally. However, from my understanding, the experiment is designed to test how far subjects will obey an authority figure even if it means inflicting pain on another. To inform the subject, ...

physics
Samuel travels to the east at 15m/hr for 20 minutes. Then hevtravels 30 degrees north of east 2m/s for 15 minutes. What is his displacement?

physics
Samuel travels to the east at 15m/hr for 20 minutes. Then hevtravels 30 degrees north of east 2m/s for 15 minutes. What is his displacement?

algebra
What is b__8 help me

chemistry
Determine the [H3O+]. Are these solutions acidic or basic? a. [OH-]=7.0x10^-8 a. [H3O+]= acidic or basic? b. 0.00030 M Mg[OH]2 b. [H3O+]=acidic or basic?

chemistry
Determine the pH. Are these solutions acidic or basic? a. [H3O+]=1.0*10^-8 a. pH=acidic or basic? b.[OH-]=1.0*10^-9 b. pH=acidic or basic? c.pOH=1.4 c. ph= acidic or basic? d.pOH=7.8 d. pH=acidic or basic?

chemistry
Identify the conjugate acid of the following bases? what acid is it? A) F^- B) HSO4^- C) CH3COO^- D) CO3^2-

chemistry
Identify the conjugate base of the following acids? The names. For example HCl is hydrochloric acid. A) HSO4^- B)H3O^+

chemistry
78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?

chemistry
78.7 mL sample of a 4.81 M sucrose solution is diluted to 120.0 mL. What is the molarity of the diluted soluti?

chemistry
can u please explain to me where did u get 2 to find radius?..

chemistry
a metal crystallizes in the face centered cubic crystal structure with a unit cell edge of 5.48 x10 power of -8 cm. the density of the metal is 6.90 g per cubic cm. a. what is the mass (g) of a single atom of this element. b. what is the atomic weight of the element (g per mol...

chemistry
a metal crystallizes in the face centred cubic cubic crustal structure with a unit cell edge of 5.48 x10 power of -8 cm.the density of the metal is 6.90g per cubic cm. a. what is the mass in grams, of a single atom of this element. b. what is the atomic weight of the element (...

chemistry
and also how to get the # of atoms per unit cell...

chemistry
can u please explain to me where did u get the 3 to find radius?.. thank you..

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Search
Members