Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 72,785

**Chemistry**

A hydrogen atom has a mass of 1.673x10^-24 g How many hydrogen atoms would you have in 5.6 g of hydrogen?
*September 23, 2014*

**Math **

Jasmine has 8 pack of candle wax to make scented candles. Each pack contain 14ounces of wax. Jasmine uses 7 ounces of wax to make one candle . How many candles can she make
*September 23, 2014*

**chemistry**

10. A student weight out a 25 g sample of NaCl, SiO2 and NH4Cl. The student determines the sample contains 3.0 g NH4Cl and 7.0 g SiO2. What is the percentage of NaCl by mass (weight) in the sample?
*September 23, 2014*

**Pre-calculus/Trignometry**

Which of the following is a correct equation for the line passing through the point (-1,4) and having slope m = -3? A. y-4=-3(x+1) B. y=-3x+1 C. 3x+y=1 D. y=-1/4x-3
*September 23, 2014*

**Algebra**

5799
*September 23, 2014*

**Algebra 2**

Explain how to find the slope of a line from a table of data.
*September 23, 2014*

**math**

The Sandersons are planning to refinance their home. The outstanding principal on their original loan is $100,000 and was to amortized in 240 equal monthly installments at an interest rate of 11%/year compounded monthly. The new loan they expect to secure is to be amortized ...
*September 23, 2014*

**lac 2**

4. Critics often say that Chekhov’s short stories show “slices of life” rather than complete story arcs. How do the endings of "Star Food," "Everything That Rises Must Converge," and "The Bet" reflect what might be considered ...
*September 23, 2014*

**Science--Help.**

Which of the following is NOT one of the eight most common elements in Earth’s continental crust? carbon silicon oxygen aluminum The most abundant element in Earth’s continental crust (by weight) is _____. 2. oxygen silicon calcium iron 3. The central region of an ...
*September 23, 2014*

**ecu**

test has a 500 mean with a sd of 150; with a score of .13% both negative and postive 2.14%
*September 23, 2014*

**Math Help**

Choose the word phrase that can be represented by 2 – p. the difference of a number p and 2 the quotient of 2 and a number p 2 more than a number p 2 decreased by a number p 2. Which word phrase could represent the variable expression 1/2a + 4? 4 more than half Chris’...
*September 23, 2014*

**Precalculus**

Find two values for theta such that theta is greater than or equal to 0 but less than or equal to 2pi. 1. Tan theta=1.1071 2. Sin theta = -0.8818
*September 23, 2014*

**CHECK PLEASE**

There where spammers here...but thank u
*September 23, 2014*

**physics**

What's the momentum of a 3.5-kg boulder rolling downhill at 5 m/s?
*September 23, 2014*

**dana**

Wich lets you put Equal groups toghether?
*September 23, 2014*

**government**

The purpose of the First Ten Amendments to the Constitution is to __________.
*September 23, 2014*

**Calculus I**

I have to determine if this function is either odd or even or neither. f(x)=x^3*abs(x^3) + x^3 I do not know how to approach this question as the absolute value is giving me trouble. Please help. Thanks.
*September 23, 2014*

**College Pre-Calculus**

find a function m such that m(f) is the number of miles in f feet
*September 23, 2014*

**help**

A big luxury car weighing 1.96 x 104 N (about 4400 lb), travelling in the x direction makes a fast stop; the x component of the net force acting on it is -1.50x 104 N. What is its acceleration?
*September 22, 2014*

**chemistry**

How many grams of copper atoms are needed to supply the same number of atoms as does 235 grams of iron?
*September 22, 2014*

**Analytical Chem**

Yes, I do... The only part that I do not know is how to find the activity coefficients... [H+]=(x)(?)(x)(?)/0.05 The rest of the problem I can do... Thanks! :)
*September 22, 2014*

**Analytical Chem**

Use activity coefficients to find the concentration of hydrogen ions in a solution of 65.0 mM butanoic acid and 0.05 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 10-5. Take the size of C3H7COO– to be 500 pm. Find [H+], pH, and alpha. Can you ...
*September 22, 2014*

**Math**

How do I calculate this problem? Add the operation signs and parentheses where needed. The number are 6 , 5 , 9 and 2 that equal 77 .
*September 22, 2014*

**math**

use the digits 3,5 and 7 to make two three-digit number with the greates possible sum.
*September 22, 2014*

**Nouns**

No. I just wanted to know. It's part of my homework and I'm in 4th grade.
*September 22, 2014*

**math**

he sales goal for your store this week is $22,682. The sales goal for your store this week last year was $20,128. Your store has averaged 1775 transactions per week for the last four weeks. What is the percent change in your sales goal from this week last year to this week ...
*September 22, 2014*

**Math**

Add the operation signs and parentheses where needed. 6 5 9 2 = 77
*September 22, 2014*

**algebra 2**

1. 5x+2>3x+10 =x>4 2. 8+2x< or equal too 6x-20 x> or equal too 7 3. 4(1-3n)-14>4(2n+3)-9n =? 4-12n-14>8n+12-9n 5. x/4<9 x<9*4=36 x<36 6. a/9>or equal to -15 a> or equal too -135 7. -p/7>-9 -p>-63 p<-63 8. -t/12> or equal too 6 -t>...
*September 22, 2014*

**government**

so for my algebra 2 question should i post it again?
*September 22, 2014*

**government**

i know :) but if there was what proposals would you make
*September 22, 2014*

**government**

ok
*September 22, 2014*

**government**

ohh and What proposals would you make for a new constitution?
*September 22, 2014*

**government**

i have 2 posts
*September 22, 2014*

**government**

yea i finally got it thank you though can u check my algebra 2 questions i'm struggling with them thank you.
*September 22, 2014*

**government**

The United States has a mixed economy and is able to regulate many business activities. • What are the benefits of government control over business activities? •Should the United States government have more control or less control over business activities?
*September 22, 2014*

**algebra 2**

4(1-3n)-14>4(2n+3)-9n =? 4-12n-14>8n+12-9n
*September 22, 2014*

**algebra 2**

1. 5x+2>3x+10 =x>4 2. 8+2x< or equal too 6x-20 x> or equal too 7
*September 22, 2014*

**Math**

Mount Baldy is the highest peak in the White Mountains of eastern Arizona. Its elevation is divisible by 3 and 9.Is the elevation 11,603;11,503;or 11,403 feet? Explain your answer,using the rules of divisibility.__________
*September 22, 2014*

**Math**

Aztec Peak in Arizona is the highest mountain in the Sierra Ancha Mountain Range. If the elevation of Aztec Peak is divisible by 2, is the elevation 7,963 or 7,964 feet? Explain your answer,using the rules of divisibility.______________
*September 22, 2014*

**algebra 2**

eight times a number is at least 16 define: inequality: 8n>16 solve:n>2
*September 22, 2014*

**algebra 2**

negative one sizth of a number is less than -9 define a variable: write an inequality: -1/6n<-9 solve: ?
*September 22, 2014*

**algebra 2**

negative 12 times a number is no more than 84 define a variable: write an inequality: -12n<84 solve: n>-7
*September 22, 2014*

**algebra 2**

one eighth of a number is less than or equal too 3 define a variable: write an inequality: 1/8 n < or equal too 3 solve: ?
*September 22, 2014*

**algebra 2**

define a variable, write an inequality, and solve each problem. check your solution 1. four times a number is greater than -48 define a variable: write an inequality: 4n>-48 solve: n>-12
*September 22, 2014*

**algebra 2**

-y<36 = y>36
*September 22, 2014*

**algebra 2**

x/4<9 x<9*4=36 x<36 a/9>or equal to -15 a> or equal too -135 -p/7>-9 -p>-63 p<-63 -t/12> or equal too 6 -t> or equal to 72 t< or equal too 72 how do u do these
*September 22, 2014*

**math**

Add the operation signs and parentheses where needed. 6 5 9 2 = 77
*September 22, 2014*

**math**

Follow the order of operations and find the missing number: 20+5 x(?+6)-12/2=64
*September 22, 2014*

**Chemistry **

4) Using your initial mass of copper (0.38), calculate the minimum volume of concentrated 12M nitric acid needed to completely react with your copper to form copper (II) nitrate 5) Using your answer from question 4 (2x10^-3 L), calculate the minimum volume of 6M sodium ...
*September 22, 2014*

**Precalculus**

Find two values for theta such that theta is greater than or equal to 0 but less than or equal to 2pi. 1. Tan theta=1.1071 2. Sin theta = -0.8818
*September 22, 2014*

**pre cal**

Find b, given that a = 18.2, B = 62°, and C = 48°. Round answers to the nearest whole number. Do not use a decimal point or extra spaces in the answer or it will be marked incorrect.
*September 22, 2014*

**Math**

So it would be 4x + 5 = 2x - 9 because it says 'five added to 4'
*September 22, 2014*

**Math**

Five added to 4 times a number is equal to 9 less than 2 times the number. 9x + 2 = 5x + 4 5x + 4 = 9x - 2 *my answer 4x - 5 = 2x + 9 4x + 5 = 2x - 9
*September 22, 2014*

**physics**

A speeder passes a parked police car at a constant speed of 39.2 m/s. At that instant, the police car starts from rest with a uniform 2 is overtaken by the police car? Answer in units of s acceleration of 2.77 m/s . How much time passes before the speeder
*September 22, 2014*

**Math**

14+2m = 4m - 16 (no multiple choice) I don't understand it 4(x +2) = 14 - 2(3 - 4x) (no multiple choice) Eight subtracted from 4 times a number is equal to 4 less than 6 times the number. (not multiple choice) my answer is 8x - 4 = 4x - 6
*September 22, 2014*

**Finance**

Use the following information to calculate the covariance of asset A with an equally weighted portfolio of assets B and C. Asset Standard Deviation A 20% B 30% C 40% The correlation coefficient between A and B is 0.6. The correlation coefficient between A and C is 0.5. The ...
*September 22, 2014*

**physics**

The masses of these particles are mA = 374 kg, mB = 516 kg, and mC = 155 kg. d1 = 0.414 m and d2 = 0.207 m. Calculate the magnitude of the net gravitational force acting on particle A.
*September 22, 2014*

**algebra**

a charges $50 for gate and $3.50 per foot b charges $75 for gate and $2.25 per foot how many feet of fencing would result equal estimates?
*September 22, 2014*

**algebra**

total $3.25 worth of coins nickels, dimes, quarters 2morenickels than dimes 1 more quarter than nickels how many of each coin
*September 22, 2014*

**chemistry**

In a butane lighter, 9.2g g of butane combines with 32.9g g of oxygen to form 27.8g g carbon dioxide and how many grams of water?
*September 22, 2014*

**Math**

For y=3 +7 cos 5 (theta - 28 degrees) Find y when theta=321 degrees
*September 22, 2014*

**Math**

Show that a triangle with sides 3,4,5 inches long is a right triangle. Find the measure of the larger acute angle
*September 22, 2014*

**Chemistry**

A 530 mL solution 10% HCl has been spilt onto the bench. It cannot be diluted or washed away. How much of the granular NaOH from the container seen in a previous photograph, must be used to neutralise the acid? [Using NaOH: MM = 40 g/mol]
*September 22, 2014*

**Precal**

What is the exact value of sec theta if the terminal side of 0 contains the point (-7,13)
*September 22, 2014*

**Math (corrected)**

Oh sorry I meant 3^2-12/(6-3)*8
*September 21, 2014*

**Math**

3^2=12/(6-3)*8
*September 21, 2014*

**Chem**

After 450 years how many grams of C-14 will remain from a 100.0 g sample
*September 21, 2014*

**math**

What is the value of the expression?
*September 21, 2014*

**physics**

traveling 7.7 meters per second, decelerate at 1.5 meters per second squared, how long til get back to starting point.
*September 21, 2014*

**physics**

In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 1.52 s. later, at distance d = 30.5 m from the building and at angle θ = 61° with the horizontal.
*September 21, 2014*

**algebra**

3x-5y+5z=-19 5x-4y-3z=-45 x-y+4z=12
*September 21, 2014*

**Physics**

A baseball is hit with a velocity of 30 m/s at an angle of 38.2 degrees above the horizontal. An outfielder, who happens to be very good at 2D Kinematics, figures out exactly where its going to land.Knowing he is exactly 8 meters away from the landing point, and that his ...
*September 21, 2014*

**College Physics**

(II) You are explaining why astronauts feel weightless while orbiting in the space shuttle. your friends respond that they thought gravity was just alot weaker up there. convince them and yourself that it isn't so by calculating the acceleration of gravity 250 km above ...
*September 21, 2014*

**Algebra 2**

Please help
*September 21, 2014*

**Algebra 2**

Somebody help
*September 21, 2014*

**chemistry **

Does adding the wrong amount of water to a compound when recrystallizing affect percent recovery?
*September 21, 2014*

**Auditing**

For each of the following audit procedures, identify which audit objective(s) is/are being addressed: a. Inquiry of the client’s legal counsel as to whether there is any outstanding litigation against the client that they are aware of. b. Taking a sample of items from the...
*September 21, 2014*

**physics**

A blue ball is dropped from a height of 3.8 m above a classroom floor while a red ball held at the same height is thrown horizontally with a speed of 5 m/sec. Find The initial velocity and acceleration of each ball (the positive x-direction is the direction the ball is thrown ...
*September 21, 2014*

**Physics**

An animal loving subway train conductor sees a happy little subway rat on the tracks 125 meters ahead of his current position. If the train is moving at 18 m/s, how long can he wait before beginning to apply the brakes? The maximum safe braking rate of the train is 1.80 m/s^2.
*September 21, 2014*

**Algebra**

x^3-2x^2-1+2=0?
*September 21, 2014*

**HR management**

Susan Moore is the number manager in charge of a 25-bed medical unit at St. Eligius Hospital. She is currently preparing the nurse staffing plan for the next fiscal year. Hospital management has provided all nurse managers with a list of assumptions for staff planning, most of...
*September 21, 2014*

**Chemistry**

Given: Cu2O(s) + 1/2 O2(g) → 2CuO(s) deltaH°= -144 kJ 2Cu2O(s) → 2Cu(s) + 2CuO(s) deltaH°= 22 kJ Calculate the standard enthalpy of formation of CuO(s).
*September 21, 2014*

**essential web publishing skills**

which of the qualities required for a good document is violated in the following passage?
*September 21, 2014*

**Chemistry**

Okay... but I tried that answer and it was incorrect.
*September 21, 2014*

**Chemistry**

When i did that I got -940 kJ but that isn't and option and neither is -1000kJ. So by default would the answer be F.
*September 21, 2014*

**Chemistry**

Hydrogen cyanide is produced in the following balanced reaction. 2NH3 (g) + 3O2 (g) + 2CH4 (g) → 2HCN (g) + 6H2O (g) Given the following standard heats of formation, calculate the approximate ΔH°rxn of this reaction. Substance ΔHf°(kJ/mol) NH3 -46 CH4 -...
*September 21, 2014*

**physics**

Starting from rest, a car accelerates down a straight road with constant acceleration a for a time t, then the direction of the acceleration is reversed, (i.e., it is a), and the car comes to a stop in an additional time t, the time for the whole trip being 2t. At what...
*September 21, 2014*

**health care**

complete the calculations for "Skill Builder: Human Resource Forecasting Assignment" in the course text Human Resource Management Applications.
*September 21, 2014*

**Health--Check my answers**

1. The best way to describe fitness is: being slim and low in body fat being big, strong, and “buffed” being flexible and having a sense of overall well-being *** all of the above 2. The best way to describe wellness is: making positive choices *** folding under peer...
*September 21, 2014*

**geography**

which states is farthest East?
*September 21, 2014*

**Math**

my garden last year was a square with sides 28 ft. this year i added a section that is an isosceles triangle at one end of my square garden to form the figure below. if each of the two equal sides of the triangle is 18 feet. i'm having a problem with deer this year and ...
*September 21, 2014*

**maths**

let d be the HCF of 24 and 36 . find two no.s and b such that d = 24a + 36b
*September 21, 2014*

**physics**

A girl want to know the distance of a tree from where the point R where she is standing ,she used a convex lens to project the image of the tree onto a wall of 15M away ,she later moved the lens toward the tree and found that the image is again projected on the wall after ...
*September 20, 2014*

**physics**

During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.59 s, how high does it rise? The acceleration of gravity is 9.8 m/s2 .
*September 20, 2014*

**physics**

A model rocket is launched straight upward with an initial speed of 45.6 m/s. It acceler- ates with a constant upward acceleration of 2.88 m/s2 until its engines stop at an altitude of 151.6 m. 1. What is the maximum height reached by the rocket?
*September 20, 2014*

**chemistry**

The number of kilojoules needed to raise the temperature of 125 g of water from 20°C to 95°C is ________. The specific heat of water is 4.184 J/g °C.
*September 20, 2014*

**physics **

A car travels along a straight stretch of road. It proceeds for 11.4 mi at 57 mi/h, then 21.8 mi at 43 mi/h, and finally 30.8 mi at 32.6 mi/h. What is the car’s average velocity during the entire trip?
*September 20, 2014*

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