Sunday

February 26, 2017
Total # Posts: 378

**science**

CH3CH2CHO + 2Ag(NH3)2OH = CH3CH2COONH4+2Ag+H20+3NH3 yield of Ag obtained = 75% calculate minimum mass of propanal that must have been used to form 5g of silver

*January 31, 2013*

**gpa**

I'm a sophmore my current gpa from my freshman year came up to be a 1.2, we just finished our first semester my gpa from from first nine weeks and second nine weeks both were a 2.4, was wondering if i stay on track like this will I be able to pull my gpa up to a 2.0 ? and ...

*December 22, 2012*

**math**

The graph shows the cost C in dollars to rent a car for one day as a function of the number m of miles driven. Which of the following functions models the situation?

*December 1, 2012*

**Statistics**

The time per week a student uses a lab computer is normally distributed, with a mean of 6.2 hours and a standard deviation of 0.9 hour. A student is randomly selected. a. Find the probability that a student uses a lab computer less than 4 hours per week. b. Find the ...

*November 30, 2012*

**Physics HELP!**

2. Suppose you pour 15 g of hot water (at 55 oC) into a glass that contains 20 g of ice (at - 10 oC). Neglect the heat absorbed in the glass itself. a. How much heat would the water give up to get cooled to the melting point? b. How much heat would it take to get the ice to ...

*November 19, 2012*

**Physics**

Suppose you pour 15 g of hot water (at 55 oC) into a glass that contains 20 g of ice (at - 10 oC). Neglect the heat absorbed in the glass itself. a. How much heat would the water give up to get cooled to the melting point? b. How much heat would it take to get the ice to the ...

*November 19, 2012*

**Physics**

2. Suppose you pour 15 g of hot water (at 55 oC) into a glass that contains 20 g of ice (at - 10 oC). Neglect the heat absorbed in the glass itself. a. How much heat would the water give up to get cooled to the melting point? b. How much heat would it take to get the ice to ...

*November 19, 2012*

**Chemistry**

A 5.0g KBr sample, at 25 degrees celsius, dissolved in 25 ml of water, also at 25 degrees celsius. the final equilibrium temperature of the resulting solution is 18.1 degrees celsius, What is the enthalpy change in J/g and KJ/mole of KBr.

*November 14, 2012*

**History**

Why might a president's legislative proposal receive strong public support from around the nation yet still encounter opposition in Congress?

*November 14, 2012*

**University Physics**

from my calculations the answer is 128.35seconds

*November 1, 2012*

**Honors Physics**

A plane traveling at 300.0 km/h attempts to land on a 500 m runway. The plane’s engines and brakes accelerate uniformly at –5.0 m/s2. Will the plane be able to land safely?

*October 16, 2012*

**Statistics**

When a truckload of apples arrives at a packing plant, a random sample of 250 is selected and examined for bruises, and other defects. The whole truckload will be rejected if more than 5% of the sample is unsatisfactory. Although it is not known, in fact 8% of the apples on ...

*October 8, 2012*

**Math**

When a truckload of apples arrives at a packing plant, a random sample of 250 is selected and examined for bruises, and other defects. The whole truckload will be rejected if more than 5% of the sample is unsatisfactory. Although it is not known, in fact 8% of the apples on ...

*October 8, 2012*

**US History**

Why Is Alfred T Mahan Important To Us Today?

*October 4, 2012*

**Us History**

In need of help, Who Did Alfred T Mahan Look Up To As A Child?

*October 4, 2012*

**Math**

For the given cost function 16 sqrt x+x^2/3375 The marginal cost at the production level 1700 The minimal average cost

*September 29, 2012*

**Math**

In lowest gear on a 10-speed bike, each turn of the pedals makes the wheels turn 3.4 times. In the highest gear, each turn of the pedals makes the wheels turn 1.8 times. With each turn of the wheels, the bike travels 6.5 feet. How much farther does the bike travel with each ...

*September 24, 2012*

**English-poetry**

I am doing a poetry analysis of John Clare's "IAm!" I need help identifying the emotional/logical climax and the fulcrum of the piece. I have identified its metaphors, similes, imagery, censuara, allusions, repetition. Am I missing something? Here is the poem: I ...

*September 24, 2012*

**Math**

I need to make a bar graph using the data set of my last problem. Data Set: 5,7,7,7,11,12,12,13,14,15,16,18

*September 19, 2012*

**Geometry**

the area of a triangle is 27. its height is 3 times the base. find the height and the base of the triangle.

*September 11, 2012*

**ap geometry**

m is the midpoint of segment jk. jm=x/8 and jk=3x/4 subtracted by 6. find mk

*September 3, 2012*

**Math**

Compute 2^1000(mod 121) using Euler.

*August 2, 2012*

**Math**

Noting that 666=2x3^2x37, find phi(666) using Euler Theorem.

*August 2, 2012*

**Math**

Find the last two digits (units and tens digit) in 1829^1829 and find the units digit in 23^7777.

*August 1, 2012*

**geometry**

Martha climbs 40 steps to reach the first floor of a building. If the vertical and horizontal distance of each step is 1.5 ft and 1 ft, find the distance between the start and end points of each step.

*June 11, 2012*

**Algebra**

Please help!!!! (square root of x) + 3 = square root of (x+12)

*May 20, 2012*

**Physics**

either throw the jetpack where he doesn't want to go, so away from the space station, OR JUST CALL ANOTHER ASTRONAUT OVER THE RADIO!!! If the jetpack runs out of fuel, that doesn't mean that the battery of his radio and other systems is dead!

*May 8, 2012*

**Algebra**

the length of a rectangle is 1 inch greater than its width if its dimensions are doubled its area increases by 36 square inches give an equation to find its dimensions

*May 8, 2012*

**history**

thanks! Just as I thought just wanted to make sure

*May 1, 2012*

**history**

How do I know why someone wrote a journal(history) or why we still read it today?

*May 1, 2012*

**trig**

a 7 foot tall man is standing 65 feet away from a tower. if the angle of elevation is 35 degrees. what is the height of the tower to nearest tenth of a foot?

*April 18, 2012*

**finance**

you would calculate as follows: Only the income that results from this project is going to be counted. So, all "currently sells X at $" info is ignored! New project: 20580 x $11760 + 4900 x $44100 + -1274 x $83300 (we sell less of these) =351986600

*April 16, 2012*

**Trigonometry**

express in terms of sine and cosine. a) tan theta/ cot theta i know the answer is sin^2 theta / cos ^2 theta but how do you do it?

*March 22, 2012*

**chemistry**

DrBob222, aren't the volumes the wrong way round?

*March 12, 2012*

**science-Help!**

thanks a lot.

*March 11, 2012*

**science-Help!**

thank you-would this be correct Vinegar with Baking Soda mixed together creates an acid-base, making a gas. The gas pushes up into a balloon and causing the balloon to blow up.

*March 11, 2012*

**science-Help!**

not a specific question but I have to make a poster with my experiment-balloon, baking soda and vinegar each step of the scientific method. but stuck on research.

*March 11, 2012*

**science-Help!**

so I need to search the internet for why my experiment works? because I already came across these two sites and they did not help.

*March 11, 2012*

**science-Help!**

What does it mean in the scientific method that the second step is research? I need to write up the 5 steps of scientific method explaining my experiment-how do i do research?

*March 11, 2012*

**Physics**

Electrical conductivity in liquid solutions depends on the presence of free 1) neutrons 2) protons 3) molecules 4) ions explain please I really don't understand this question

*March 7, 2012*

**U.S History**

Why was there an Agricultural boom during WW1? Why did the boom come to an end?

*March 7, 2012*

**Calculus**

Sketch a possible graph for a function that has the following characteristics. f(0)=2.5 -horizontal asymptote is y=3 -Vertical x=4 -f'(x)<0 and f''(x)>0 for x>4. -f'(x)<0 and f''(x) <0 for x<4 I got the horizontal and vertical but I ...

*March 2, 2012*

**physics**

wo packages at UPS start sliding down the ramp shown in the figure. Package A has a mass of 4.50 and a coefficient of kinetic friction of 0.190. Package B has a mass of 10.5 and a coefficient of kinetic friction of 0.170.

*February 20, 2012*

**math**

. If the mean of six values is 59 and five of the values are 42, 76, 59, 51, and 72 find the sixth value.

*February 9, 2012*

**physics**

How to calculate the potential energy in a CR circuit with a resistor and 10micro-farrad capacitor before the switch is closed. the capacitor has a charge of 100 v and two seconds after the switch is closed looses 37% of its original value.

*February 5, 2012*

**math**

$5 - 110 $10 - 220

*January 10, 2012*

**Spanish-Please check SraJMcGin if possible**

Thank you so much-really appreciate it-

*January 10, 2012*

**Spanish-Please check SraJMcGin if possible**

Please check if you have time we had to select the correct answer for the two questions 1.¿Ellas te escuchan? Ellas me escuchan. 2. ¿Me escuchas? Te escucho.

*January 10, 2012*

**Spanish-Please check SraJMcGin**

This is a diffeent one that the one you checked earlier and thank you again

*January 10, 2012*

**Sapnish-Please check SraJMcGin**

Please check if you have time we had to select the correct answer for the two questions 1.¿Ellas te escuchan? Ellas me escuchan. 2. ¿Me escuchas? Te escucho.

*January 10, 2012*

**Spanish-Thank you Sra**

Thank you very much That was pretty funny about me eating myself-thank you for pointing that out-my teacher would have thought I was muy tonto!

*January 10, 2012*

**Spanish-Thank you**

Thank you for doing that-I really appreciate it-I'm alittle confused on this stuff

*January 10, 2012*

**Spanish-7thgrade**

I had to write a paragraph about what my mom did yesterday and I had to use SOME REFLEXIVE VERBS- I'm not sure if this is correct. Mi madre se despertó a las seis de la mañana. Ella se despertó cuando escuchó e l despertador. Ella se levant&...

*January 10, 2012*

**Korean**

how do you say merry christmas in korean?

*December 6, 2011*

**algebra**

y=5x+3

*December 6, 2011*

**Algebra**

I need to use Pascal's Triangle to expand (x-1)^5 I know I use the fifth row but I'm not sure how to do it- I have a bunch of these and I'm really confused- Please help if you can-

*December 5, 2011*

**Algebra**

oh okay-thank you

*December 2, 2011*

**Algebra**

Explain what happens to the graph y=4^x if you change it to 4^(x+3)+ 2 would it move 3 units to the right and 2 units upward-I'm thinking becaue youi're adding to the x??

*December 2, 2011*

**Economics**

C.

*November 29, 2011*

**calculus**

They want the answer in radians not degrees. So it's pi/2

*November 13, 2011*

**Physics**

throw it away from the station with as much force as she can, and make sure she doesn't miss, so she will float back to the station

*November 13, 2011*

**physics**

To enter the main pool at an amusement part, a swimmer uses a water slide which has a vertical height of 2.65 m. Find her speed at the bottom of the slide if she starts with an initial speed of 0.950 m/s.

*November 10, 2011*

**physics**

A 9.90-g bullet has a speed of 1.33 km/s. (a) What is its kinetic energy in joules? (b) What is the bullet's kinetic energy if its speed is halved? (c) What is the bullet's kinetic energy if its speed is doubled?

*November 10, 2011*

**physics**

A 9.90-g bullet has a speed of 1.33 km/s. (a) What is its kinetic energy in joules? (b) What is the bullet's kinetic energy if its speed is halved? (c) What is the bullet's kinetic energy if its speed is doubled?

*November 10, 2011*

**Math Homework Help Please**

630?

*November 6, 2011*

**Math Homework Help Please**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $3,000 balance, 21% rate, $150 payment, average ...

*November 6, 2011*

**Math Homework**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $3,000 balance, 21% rate, $150 payment, average ...

*November 6, 2011*

**Math**

21?

*November 6, 2011*

**Math**

Convert the following credit card rate to the APR. Oregon, 1 3/4% per month , = 1.75%?

*November 6, 2011*

**math**

THANKS!!!

*November 6, 2011*

**math**

Suppose you see a car with an advertised price of $28,450 at $594.60 per month for 5 years. What is the amount of interest paid? $7226? please help

*November 6, 2011*

**MATH**

Convert the following credit card rate to the APR. Oregon, 1 3/4% per month 1.75 % IS THIS CORRECT?

*November 5, 2011*

**MATH**

Thanks for your help, I'm not sure how but I kept getting 1.06%

*November 5, 2011*

**MATH**

A car dealer will sell you a used car for $5,430 with $430 down and payments of $183.06 per month for 36 months. What is the simple interest rate? (Round each answer to the nearest tenth.) PLEASE HELP!

*November 5, 2011*

**5th Grade Math**

Use the terms factor, divisor,multiple, product and divisible by to write as many statements as you can about the number sentence below. 7*9=63

*October 24, 2011*

**physics**

448000000

*October 24, 2011*

**chemistry**

it isn't necessary to change the mass in grams to moles. the equation reads out q=s*m*(final temp - initial temp) where q is the change in enthalpy, s is specific heat, and m is mass.

*October 20, 2011*

**STATS**

Scientists wish to test the mind-readiing ability of a person who claims to have ESP. They use five cards with different and distinctive symbols( square, cicrle, triangle, line, squiggle). Someone picks a card at random and thinks about the symbol. The mind-reader must ...

*October 17, 2011*

**calculus**

How to solve for "t" - step-by-step sqrt(2t-1) + sqrt(3t+3) = 5 Thank you very much.

*October 15, 2011*

**Physics**

Moment of Ineria= 1/2 MR^2 = 1/2 (3.565kg)(0.0950m)^2= 0.016 kg.m^2

*October 13, 2011*

**Math**

i don't know

*September 28, 2011*

**Pre-Calc**

I posted yesterday and didn't get a response so I'm hoping someone can check these today-Thank you they are polar coordinate questions--My answers are her I just need them checked- 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)...

*September 28, 2011*

**Pre-Calc-Please check I'm desperate**

Please check my answers I really need to do my homeowrk!;This are polar coordinates we're studying-I'm almost positive the first two are correct. 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this one?? ((-3,0 ...

*September 27, 2011*

**Pre-Calc**

Please check my answers I really need to do my homeowrk!;This are polar coordinates we're studying-I'm almost positive the first two are correct. 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this one?? ((-3,0 ...

*September 27, 2011*

**Pre-Calc**

Please check my answers;This are polar coordinates we're studying-I'm almost positive the first two are correct. 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this one?? ((-3,0 degree) 2.Which is not a ...

*September 27, 2011*

**Pre-Calc P lease check**

Please check my answers; 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this one?? ((-3,0 degree) 2.Which is not a representation of (5,150 degree) (-5,-30 degree)I think it is this one? (-5,330 degree) (5,510 degree) 3....

*September 27, 2011*

**Pre-Calc**

Please check my answers; 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this one?? ((-3,0 degree) 2.Which is not a representation of (5,150 degree) (-5,-30 degree)I think it is this one? (-5,330 degree) (5,510 degree) 3....

*September 27, 2011*

**Physics**

Emily takes a trip, driving with a constant velocity of 79.5 km/h to the north except for a 22 min rest stop. If Emily's average velocity is 68.8 km/h to the north, how long does the trip take?

*September 24, 2011*

**science/math**

A car travels up a hill at a constant speed of 45 km/h and returns down the hill at a constant speed of 70 km/h. Calculate the average speed for the round trip.

*September 24, 2011*

**Science/math**

Emily takes a trip, driving with a constant velocity of 79.5 km/h to the north except for a 22 min rest stop. If Emily's average velocity is 68.8 km/h to the north, how long does the trip take?

*September 24, 2011*

**visual basic 2010**

Write a program to determine a person's weekly pay, where they receive time and a half for overtime work beyond forty hours.

*September 18, 2011*

**6th grade**

interview some from 9/11

*September 11, 2011*

**6th grade**

describe yourself mathamatically

*September 11, 2011*

**Algebra**

How to write an equation for this problem: A boat rental company charges a $5 usage fee and $10 an hour to rent a canoe. How long did you rent the canoe if you were charged $45?

*September 10, 2011*

**Algebra**

How to write an equation for this problem: A boat rental company charges a $5 usage fee and $10 an hour to rent a canoe. How long did you rent the canoe if you were charged $45?

*September 10, 2011*

**chemistry**

2540J/115g*.385J/gC=57.36871824

*September 7, 2011*

**chemistry**

4L

*September 2, 2011*

**math**

108=4x3 to the what power

*August 30, 2011*

**Writing**

Aristotle observed arguments only have two parts: statement and proof. T/F

*June 26, 2011*

**Statistics**

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. Student's grades - A, B, or C, on a test.

*June 26, 2011*