Posts by amber

Total # Posts: 1,688

AP CHEMISTRY HELP
Thank you so much. Also, would this same procedure be used for when there's an air bubble in the titration?

AP CHEMISTRY HELP
a) A student fails to wash the weighing paper when transferring the KHP sample into the beaker. What effect does this error have on the calculated molarity of the NAOH solution? Mathematically justify your answer. b) A student failed to notice an air bubble trapped in the tip ...

Math
Multiply. Write the answer in simplest form. 6×78=

math
explian in writing how waould you use a number line to round 148 to the nerst ten

(a) Find the current in each resistor of the circuit shown in the figure byusing the rules for resistors in series and parallel. (b) Write three independent equations for the three currents using Kirchhoff’s laws: one with the node rule; a second using the loop rule ...

precalculus
Why can't you answer your own homework questions? You can't stroll through life being a cheater.

Math Essentials
How many ways can an IRS auditor select 4 of 9 tax returns for an audit?

Chemistry
True because I did learn that the lower the pH the more acidic it is.

Chemistry
The hydronium ion concentration in coffee is 1 x 10^-5 M. What is the pH of coffee?

Chemistry
The hydronium ion concentration for a solution is determined to be 4.5 x 10^-7 M. What is the concentration of the hydroxide ion? I just wanted to let the people that are being nice enough to help me know that this is for a study guide. It is not a test or quiz. :0) Thanks.

chemistry
I want to say because it has more of the reactant. Am I right?

chemistry
Write a balanced equation for the proton transfer reaction between water and phosphate ion. Determine in which direction the equilibrium is favored.

Chemistry
When a 5.00 ml sample of vinegar is titrated, 44.5 ml of 0.100 m NAOH solution is required to reach the end point. What i sthe concentration of vinegar in moles per liter of solution?

Chemistry
How much heat would be released by burning one gallon of octane? The density of octane is 0.703g/mL. 1 gallon= 3.79 liters.

algebra
Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? Justify your answer with an explanation or a graph. How might you explain your answer to someone who has not learned algebra?

english
Select the gerund phrase in the sentence below. Then, determine the noun function of the gerund. 1. Water skiing, sailing, and swimming are my favorite summer sports. 2. I enjoy playing the piano.

physics
A 50.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11~ 10-8 ƒ¶m and the density is 7.86 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 ƒ...

Analytic Geometry
Please help. I've been trying to solve these for more than an hour now but I can't seem to get it. 1) The segment joining (-4,7), (5,-2) is divided into two segments, one of which is 5 times as long as the other. Find the point of division. 2) The segment joining (4,0...

Math
Mr. Smith is purchasing a $190000 house. The down payment is 20% of the price of the house. He is given the choice of two mortgages: (A) a 25-year mortgage at a rate of 8%. Find: (i) The monthly payment:$ (ii) The total amount of interest paid: $(B) a 15-year mortgage at a ... physical science 34.5 AED200 a 700- to 1,050-word paper in which you outline the steps required for a multicultural education to be effective. Describe types of activities you would incorporate into your classroom that would support a multicultural education for all groups in this class. How could each ... Health So, it's C right? sociology Smiling and making polite remarks to people we do not like is an example of: A) making another feel embarrassment. B) exercising power over another. C) idealizing a personal performance. D) using tact. 7th grade math Ms. Sue please Thanks Help Please ur answers are correct :) math find the interest rate to the nearest hundredth of a percent that will produce$2500, if \$2000 is left at interest compounded semiannually for 4.5 year

Chemistry
What is the molar concentration of nitrate ions in a 0.161M magnesium nitrate(aq) solution?

Choose a product you wish to market. You will follow this product through all four P's of Marketing. Describe your goal. Is it to maximize quantity, market penetration, market share, gross revenue, profit, or other goal (such as social change)? In your one to two page ...

Marketing
Identify the product concepts you used in determining the packaging. How does the packaging affect the effectiveness of the packaging? Are there any physical, social, or economic restraints that could limit or enhance your packaging? Market Research Product Concepts

college physics
A student moves a box of books by attaching a rope to the box and pulling with a force of 80.0 N at angle of 45o. The box of books has a mass of 25.0 kg and the coefficient of kinetic friction between the bottom of the box and the sidewalk is 0.43. Find the acceleration of the...

Science
. Which of the following is a measure of motion, with the derived units in m/s? power force resistance speed

Geometry
To approach a runway, a plane must began a 7 degree descent starting from the height of 2 miles above the ground. To the nearest mile, how many miles from the runway is the airplane at the start of this approach?

Math
Subtract 16 from the number of all students. 128 - 16 = 112. Divide 112 by 2 = 56. There are 56 BOYS and 56 + 16 = 72 GIRLS

chemistry
how much heat is released when 42.3 grams of ammonia is produced?

Chemistry
Muriatic acid is the common name of industrial-grade hydrochloric acid (HCl). One of its uses is to clean or etch concrete in preparation for sealing or painting. It is typically sold in 5.00 gallon buckets, with a concentration of 11.7 M. a.What volume of concentrated ...

Stats
On her first test in algebra, Mary earned a score of 75, and she made an 85 on her first psychology test. If the average score on the algebra test was a 68, with s=7, and the average on the psychology test was 91, with s=6, is Mary doing better in psychology or algebra. Why?

math
I am a two digit number, twice the sum of my digits is 22. The product of my digits is 24.My tens digit is greater than my ones digitwhat number am I?

math
Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5? 1) commutative property of addition 2) distributive property 3) additive identity 4) additive inverse

writing
what is the prepositional phrase in the following sentence, What is the price of the blue 2006 Honda Civic in the last row of cars on the lot?

Math
find a polynomial of least degree(having real coefficients) with zeros: 5, -2, 2i

earth
what is geography?

Chemistry
Which element has no stalbe isotopes: 82Pb, 27Co, 51Sb or 90Th?

history
What caused the rapid population growth of homo sapiens

math
x^2=8x-9 solve by completing the square to obtain exact solutions

Physics
Three men are trying to move a wardrobe. One pushes northward with a force of 100N; the second pushes eastward with a force of 173N; the third pushes in a direction 60 degrees west of south with a force of 200N. What is the resultant force on the wardrobe and it's direction?

Chemistry
In solution, hypochlorite ion is known to decompose with a second-order rate law. If [ClO-]0 = 0.0570 M and k = 2.06x10-4 M-1·min-1, calculate the half-life for this reaction 2ClO-  2Cl- + O2.

Chemistry
Calculate the temperature at which k = 2.0 s-1 if k = 10.0 s-1 at 371 K. The activation energy for the reaction is 30.0 kJ mol-1.

math
if the weight of a fish varies jointly as the length and the square of the girth, and if a fish 11 inches long with a girth of 7 inches weighs 0.7lbs, find the weight of a fish 23 inches long with a girth of 18 inches.

math
if Y varies jointly as X and the square of Z, and if Y=24 when X=2 and Z=6, find Y when X=10 and Z=9

algebra
an airplane is flying at an altitude of 3200 feet. an air- traffic controller in the tower keeps constant track of the planes distance from the tower in X feet. express the horizontal distance from the tower to a point directly below the airplane,d, in terms of X.

algebra
a rancher has 310 feet of fencing with which to enclose two rectangular corrals, both of the same size. the two corrals will share one side, and a barn forms one side of both corrals. suppose the width of each corral is X feet. express the total area of the two corrals as a ...

math
a farmer has 200 yards of fencing to enclose three sides of a rectangular piece of property that lies next to a river. the river will serve as the fourth side. find the dimensions of property if the area is 3200 yards^2

Geometry
Angle ABC and ange DBE are vertical angles,the measure of angle ABC =3x+20, and the measure or angle DBE =4x-10. Write and solve an equation to find the measure of angle ABC and the measure of angle DBEin

Geometry
Angle ABC and ange DBE are vertical angles,the measure of angle ABC =3x+20, and the measure or angle DBE =4x-10. Write and solve an equation to find the measure of angle ABC and the measure of angle DBEin

college math
prove f(x)= x^15+6 is increasing on the interval: I= (-‡,‡)

math
How fast would a ball have to be thrown upward to reach a maximum height of 49 ft? [Hint: Use the discriminant of the equation 16t2 − v0t + h = 0.]

English
For this quote 'their intercourse had been one continued series of opposition. Their opinions clashed; and indeed, she had never perceived that he had cared for her opinions, as belonging to her, the individual', can someone find a technique in it? It's a good ...

HEALTH
Correct

health
Yes, B is correct

health
It is D

Science
Which of the following is a vector quantity? speed weight distance traveled mechanical energy Which of the following is a scalar quantity? work velocity acceleration displacement

stats
If 95% of all people between 21 and 50 have had at least one adult beverage in their life, find these probabilities for a sample of 10 people in that age group: a) Exactly 10 have had an adult beverage b) At least 6 have had an adult beverage c) At most 8 have had an adult ...

math
I need a lot of help on multiplication and division.Will you help me?

Science 10
The symbol of the lead(IV) ion is ?

trig HELP
A barn is 30ft. wide by 60ft long; the rafters make an angle of 40degrees with the horizontal. Find the area of each of the two gable ends and the area of the roof. Please Include Solution And If Possible An Illustration. Thank You In Advance :)

trig
Find the radius of a circle which a 59-foot chord subtends an angle of 12degrees at the center. I Just Want To See The Illustration. I Can Handle The Rest. Thank You In Advance =)

Algebra
Given f(x) = radical x-2 and g(x) = x2 – x – 6. Find (g o f)(6). A. -4 B. 2 C. 24 D. 26 E. 48

Algebra
Given f(x) = radical x-2 and g(x) = x2 – x – 6. Find (f – g)(6). A. -26 B. 26 C. -22 D. 22 E. 2

Trigonometry
A person on a ship sailing due south at the rate of 15 miles an hour observes a lighthouse due west at 3p.m. At 5p.m. the lighthouse is 52degrees west of north. How far from the lighthouse was the ship at a)3p.m.? b)5p.m.? c)4p.m.? Please Show The Solution So That I Can Study...

math foundations 20
a right hexagonal prism is enlarged by a scale factor of 5.7 a)determine the value of volume of large prism/volume of small prism. do not round answer.. how do i figure this out?

Math
The horizontal range, R, is modeled by this formula: R(x)=(v^2*sin2(x))/32 The initial velocity (v) is 90ft per second. The ball is pitched at an angle of x degrees with the horizontal. When x=26 degrees, the ball travels 200ft. At what other value of x will the ball travel ...

Geometry
Two forces are pushing on an object, one at 12 lbs of Force and one at 5.66 lbs of Force. The angle between them is 35° (each is 72.5 from horizontal, such that the forces make a v with the object in the center). 17. What is the total Force on the object? 18. What is the ...

Geometry
A plane is is flying 225 mph heading S25°W. The wind is blowing S80°E at 60 mph. 11. What is the bearing of the plane? 12. What is the smallest angle of the triangle? 13. What is the largest angle of the triangle? 14. What is the remaining angle of the triangle? 15. ...

Geometry
A plane is is flying 240 mph heading N60°E. The wind is blowing S30°E at 30 mph. 6. What is ground speed of the plane? 7. What is the smallest angle in the triangle? 8. What is the biggest angle in the triangle? 9. What is the remaining angle in the triangle? 10. What ...

Geometry
A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. What is the ground speed of the plane? 2. When you solve the triangle, what is the smallest angle? 3. What is the largest angle of the triangle? 4. What is the remaining angle? 5. What is the ...

Logic
misinterprets a key term

Geometry
A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. What is the ground speed of the plane? 2. When you solve the triangle, what is the smallest angle? 3. What is the largest angle of the triangle? 4. What is the remaining angle? 5. What is the ...

chemistry
Marla drives her car to school each day. If it takes her 12 minutes to drive one way, how many hours a week does Marla spend driving? (Express the answer in decimal form.)

chemistry
What is the specific heat of an unknown substance if 2000 J of energy are required to raise the temperature of 4 grams of the substance 5 degrees Celsius?

science
- thanksss . ^_______^

science
i think its number 4 .

science
2 or 3 >????? -_-

science
the threat of global warming is mainly associated with ? 1 radioactive wastes 2 use of hydroelectric energy 3 burning of fossil fuels 4 thermal pollution of lakes and rivers

Geometry
A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. what is the ground speed of the plane? I could not figure this one out. Please help?

algebra
The equation that describes the path of a small rocket after it is shot into the air is h=1120-16t^2, where h is the height above the ground, in feet, after t seconds. How many seconds does it take for the rocket to return to the ground?

How does TerraCycle use its size and flexibility to gain a competitive advantage? How has the company extended its product line? How well do the new products fit the company’s strategy and image? Explain. How does TerraCycle’s culture reinforce its focus on innovation?

MATH PLS HELP
A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free devices while driving. In a random sample of 150 U.S. adults 58% say that drivers should be allowed to use cellular phones with hands free devices while ...

Statistics
A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free devices while driving. In a random sample of 150 U.S. adults 58% say that drivers should be allowed to use cellular phones with hands free devices while ...

algebra 2
Classify the conic section . Write its equation in standard form. 4x^2-y+3=0?

Write an equation for a parabola with vertex at (-4 , 3) and focus at ( -4, -2)? I have this.... (X+4)^2=20(y-3)

Identify the line(s) of symmetry for the conic section x-(y-1)^2=2 I have this... (Y-1)^2=(x-2) Vertex (2,1) Symmetry y=1. Is this correct?

algebra 2
Write the equation for a parabola with vertex (-2 , 3) and focus ( -2, 1).

algebra
Identify the line(s) of symmetry for the conic section x-(y-1)^2=2

UMA
Life Direction has three parts: vision, setting goals and a plan of action

physics
On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere. This satellite was injected into an orbit 705 {\rm km} above the earth's surface, and we shall assume a circular orbit. How many hours does it take this satellite to make ...

Math
prove the identity: sin^2 O/ 1-cos O = 1+cosO O= theta