Tuesday

January 24, 2017
Total # Posts: 2,470

**Chemistry**

What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas?

*April 3, 2013*

**Chemistry**

How would you know how to do this problem without knowing Slater's rule? we've yet been taught that rule so I'm not sure how else I would figure it out.

*April 1, 2013*

**7th Grade Social Studies**

THIS QUESTION HS BEEN GOING FOR 3 YEARS LOL THANKS GUYS FOR THE ANSWERS

*March 30, 2013*

**7th Grade Social Studies**

mudda answer for u is right i swear i just took the test and got 100%

*March 29, 2013*

**science**

Do your own work please

*March 28, 2013*

**science**

can you describe the process of cellular respiration.include the words:sugar,energy,carbon dioxide,and water

*March 28, 2013*

**math**

and what would 0.1875 be as a fraction?

*March 26, 2013*

**math**

can someone tell me what would 0.0625 be as a fraction?

*March 26, 2013*

**Chemisry**

Why wouldn't it be KBr? Why are the twos added? How come its not just K + Br ==> KBr since their charges cancel out? Help!

*March 24, 2013*

**AP chemistry**

1). In a titration 20 mL of 0.100 M of HCl is added to 50.0 mL of 0.150 M of ammonia. A). What is the pH of NH3? B). What is the pH of the resulting solution? HELP :(

*March 21, 2013*

**4th grade math**

there are 12 inches in a foot so 14x12=168

*March 19, 2013*

**socials please check**

i believe 5

*March 19, 2013*

**Chemistry**

D the Keq expression of the 2nd one is = to (1/the first Keq expression)^(1/2) so take the answer of the first Keq, 5.4x10^13 and put it in that equation (1/(5.4x10^13))^(1/2)=1.36x10^-7=1.4x10^-7

*March 19, 2013*

**Chemistry**

hydronium is [OH-] ions, so you looking for the Ph that is most basic, which is your highest number 12.6

*March 19, 2013*

**Socials please check my answers**

that's correct

*March 19, 2013*

**math**

1.0425^12? if so the answer is 1.6478

*March 19, 2013*

**12Chemistry**

useing them maybe.. but i don't think they would bond them.. there specialty is teeth.. i only know about pharmacy because that's my intended major next year

*March 19, 2013*

**12Chemistry**

pharmacy, compounding not retail

*March 19, 2013*

**Math**

greater because theoretical would be 40 of 80 since there are 2 choice (heads or tails)

*March 19, 2013*

**math**

# of pennies/# of all coins 12+6+4+8=30 12/30=2/5

*March 19, 2013*

**math ALG 2!**

i've answered like 10 of these for you... you should be able to figure out how this works by the past problems if you really don't understand the process

*March 19, 2013*

**math ALG 2!**

38900

*March 19, 2013*

**math ALG 2!**

x10^6? if so.. 4,250,000

*March 19, 2013*

**math ALG 2!**

scientific notation helps make very large or very small numbers easier. for very large numbers you move the decimal place as many spaces to the left to leave you with one # on the left. you then take the # of spaces you moved and times it by 10^that number. You do the same for...

*March 19, 2013*

**math ALG 2!**

2.1x10^-7

*March 19, 2013*

**math ALG 2!**

7.4*10^6

*March 19, 2013*

**math ALG 2!**

2.3*10^7 you move the decimal place over till you have a number between 1 and 10 you then times it by 10^ number of spaces you moved over

*March 19, 2013*

**Math**

5b+9m=150.5 9b+5m=175.7 if you add them you have one equation. 14b+14m=326.2 14(b+m)=326.2 b+m=23.3 b=23.3-m sub. this back into one the original equations 9(23.3-m)+5m=175.5 209.7-9m+5m=175.5 -4m=-34.2 m=8.55 Plug that into the other equation 5b+9(8.55)=150.5 5b+76.95=150.5 ...

*March 19, 2013*

**chem**

sorry read it wrong, doing this now in chem

*March 19, 2013*

**chem**

PH=-log(ka)+log(base/acid) 4.8=-log(1.8*10^-8)+log(x/.15) 4.8=7.7447+log(x/.15) -2.9447=log(x/.15) .001135=x/.15 x=1.875*10^-4

*March 19, 2013*

**AlgebraB-2**

1. what graph? 3. -2x2-4 is 4 units below -2x2 4. wich func.?

*March 19, 2013*

**Calc**

f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?

*March 19, 2013*

**math mrs sue please help**

Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ...

*March 15, 2013*

**Algebra 1**

Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ...

*March 15, 2013*

**eng1511**

Need points so I can write an argumative essay

*March 11, 2013*

**eng1511**

The sure solution of unemployment is a better quality of education

*March 11, 2013*

**ENG1511**

Where is the passage cos u were suppose to copy n paste it

*March 11, 2013*

**Math**

ln24 - ln6

*March 5, 2013*

**ENG1511**

I wanna write 2 but have no clue where to start

*February 28, 2013*

**World History**

History and Geography Activity 12 what page is this on?

*February 25, 2013*

**College Algebra**

Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2+16x-18y+145=25

*February 18, 2013*

**English**

Thanks for you your help.

*February 18, 2013*

**English**

choices...curtail,devastate,digress,incentive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity, so now he welcomes the _______s of an exercise program. 3,4. The company decided to ...

*February 18, 2013*

**English**

I don't know what I think that is why I am asking for help !

*February 16, 2013*

**English**

Here is my choices...curtail,devastate,digress,inceantive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity,so now he welcomes the _______s of an exercise program. 3,4.The company ...

*February 16, 2013*

**english**

Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he's benched. as if he's prode of causing such turmoils. In fact,although he's a great player, the coach is pondering kicking...

*February 13, 2013*

**English**

The little girl was so___ after her illness that her parents carfully____(e)d fattening meals that were sure to arouse her appetite. Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he&#...

*February 13, 2013*

**english**

After the bully struck him, Jules wanted to________ by throwing a rock, but he had______s about doing anything so dangerous.

*February 13, 2013*

**english**

What is the adjective in the sentence "The red truck was parked behind the garage"? A. red B. truck C. behind D. parked

*February 11, 2013*

**math**

6x=-36

*February 9, 2013*

**PHYSICS HELP!!**

3.) Draw a free body diagram of a boat being pulled at an accelerated rated by a truck down a highway.

*February 5, 2013*

**PHYSICS HELP!!**

#2.) Draw a free body diagram for the following situation: a.) A 0.15 kg running shoe is pushed to the right, with a constant velocity, across a wet concrete floor with an applied force of 3.5 N. b.) Calculate the normal force exerted by the concrete onto the running shoe.

*February 5, 2013*

**PHYSICS !!!HELP**

#1.) If the force of gravity on a human is 539 N determine the mass of the human.

*February 5, 2013*

**Math**

An airplane is flying due west at a velocity of 100 m/s. The wind is blowing out of the south at 5 m/s. What is the magnitude of airplane's resultant velocity?

*February 4, 2013*

**Physics**

During the second stage of a rocket launch the rockets upward velocity increases from 980 m/s with an average acceleration of 33 m/s (upward). How long did the acceleration last?

*February 2, 2013*

**Physics**

A boat which travels 100 km (N), then 40 km (N), and finally 80 km (S). The entire trip takes 6.5 hours. A.) Calculate the total displacement of the boat B.) calculate the velocity of the boat

*February 2, 2013*

**Physics**

In the human body, blood travels faster in the largest blood vessel, the aorta than in any other blood vessel. Given an average speed of 30 cm/s, how long would it take the blood to travel 5 cm?

*February 2, 2013*

**Physics**

Classify the following measurements as scalar of vector quantities. A.) 15 s B.) 4.2 m ( up) C.) 100 km/h (S) D.) 2.8 kg

*February 2, 2013*

**Physics**

A cheetah can run with a speed of 29 m/s. Determine the distance travelled by a running cheetah in 8.6 s

*February 2, 2013*

**Physical Sciences**

How do I calculate the initial velocity of a ball if i've only given a maximum height of 12metres above its starting point?

*January 25, 2013*

**engineering**

the pringles manufacturing company tells you that they are switching to a potato supply that has a higher moisture content than those used previously. The new supply, after being mashed an cooked, prior to drying for pringles production, now contains 70% moisture content. they...

*January 17, 2013*

**engineering**

Your friend, a 75 kg mountain climber is suspended from a cliff by a rope. Calculate the tension in the rope, in Newtons, when you lift your friend to safety. If the rope can withstand 1.25 kN of stress per square centimeter of cross-sectional area, what minimum diameter of ...

*January 17, 2013*

**Math**

A moving truck fills up a shipment at an od adress, at (-2,1). It travles 7 blocks south and 6 blocks east to the new adress. What is the location of the new adress? PlEASE ANSWER THIS AS FAST AS POSSIBLE!! Amanda

*January 16, 2013*

**7th grade Social Studies from another school**

I have gratitude toward this website and I have used it to check my work and get 100% I agree with all of the statements Emily has made. Thankyou! ttyl!

*January 10, 2013*

**Negatives**

32x45=__ +-67 ?

*January 4, 2013*

**Physics**

A crate is sliding down a ramp that is inclined at an angle 37.9 ° above the horizontal. The coefficient of kinetic friction between the crate and the ramp is 0.330. Find the acceleration of the moving crate.

*December 19, 2012*

**Us history**

Describe the economic policy of merchantilism in early America

*December 15, 2012*

**jmhs help**

Which of the following statements about learning styles is false? A. An individual should study using techniques that utilize his or her preferred learning style. B. An individual can learn using only his or her preferred learning style. C. Understanding your preferred ...

*December 13, 2012*

**biology**

The Eastern skunk cabbage, which blooms in very early spring, produces chemicals that smell like decaying meat. This plant has probably become adapted to mate with the assistance of A) butterflies. B) honeybees. C) flies. D) wind.

*December 12, 2012*

**math**

27 weeks.

*December 10, 2012*

**chemistry**

the answer is 15 right

*December 8, 2012*

**chemistry**

how many liters of ammonia are required to react with 1 mole of oxygen gas at 850 degrees centigrade and 5 atm in order to produce nitrogen monoxide and water vapor at the same conditions

*December 8, 2012*

**Physics**

Glycerin is poured into an open U-shaped tube until the height in both sides is 20 {\rm cm}. Ethyl alcohol is then poured into one arm until the height of the alcohol column is 20 {\rm cm}. The two liquids do not mix. What is the difference in height between the top surface of...

*December 7, 2012*

**7th grade math Ms. Sue please**

HOW did you figure that out? I'm so confused...

*December 7, 2012*

**Physics**

A 125 ball has a kinetic energy 33.6 What is the magnitude of it's momentum? What is the speed?

*December 5, 2012*

**Physics**

Your sofa won't fit through the door of your new sixth-floor apartment, so you use a 1.19 motor to lift the 88.6 sofa 18.3 from the street. How much time does the lift take?

*December 5, 2012*

**Physics**

What power is needed to lift a 358 crate of bricks from the ground to the top of a 25.0 -high building in 1 minute?

*December 5, 2012*

**Geometry**

EF = 3x-16, FG = 2x-7, and EG = 17, find the values of x, EF, and FG

*December 5, 2012*

**chemistry**

What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g

*December 5, 2012*

**chemistry**

what total mass of product will form when 1.38 L of c3h8 at 25 degrees C and 760 torr react with 75.0 mL of 5.33 M h2cr04? a. 48.2g b.114g c. 342g d. 9.71g

*December 5, 2012*

**chemistry**

what total mass of product will form when 1.38 L of c3h8 at 25 degrees C and 760 torr react with 75.0 mL of 5.33 M h2cr04? a. 48.2g b.114g c. 342g d. 9.71g

*December 5, 2012*

**chemistry**

What mass of chromium is contained in 50 ml of 6.55 M cr2(cro4)3? a. 85.2g b. 0.188g c. 68.1 g d. 17.0g

*December 5, 2012*

**algebra**

no, the homework was 50 questions, these are just the ones I've tried to do several times and failed miserably at.

*December 4, 2012*

**algebra**

Completely factor the following expressions. Please show work/explain t^2+4tv+4v2 4x^2-8x-12+6x 144-9p^2 5c^2-24cd-5d^2 w^2-17w+42 256z^2-4-192z^2+3 2a^2c^3-14bc^3+32c^3d^2 35g^2+6g-9 3j^3-51j^2+210j

*December 4, 2012*

**math**

to solve an inequality, you need to get y by itself, so you subtract -5 (subtracting a negative is pretty much adding a positive) from BOTH sides y+ (-5) > -6 +5 +5 ---------------- y >-1

*December 4, 2012*

**Biology**

More surface area means more capacity/ability for gas exchange. Having many smaller alveoli gives more surface area. Imagine having a single bowling ball vs dozens of baseballs.

*December 4, 2012*

**chemistry**

A buffer is made by dissolving HC2H3O2 and NaC2H3O2 in water. Write an equation that shows how this buffer neutralizes added acid. Express your answer as a chemical equation. Identify all of the phases in the answer.

*December 3, 2012*

**trig**

A 600,000-cell bacteria culture is needed for a lab experiment, but you only could purchase 1,000 cells. If the cells double each day, exactly how long will it be before the experiment can be run? Create a model for the bacteria. If the experiment is in seven days, how many ...

*December 3, 2012*

**math**

Suppose that you are taking a course that has three exams which count for three-fifths of your grade and a final which counts for two-fifths of your grade. On your first three tests your scores on were 75, 80, and 74. To get an B in the course, you must have an average of at ...

*December 2, 2012*

**Geometry**

In triangle EFG, M<F=3(m<G), and m<E=m<F-30degree. Find the measure of each angle.

*November 28, 2012*

**Ethics & Justice Administration**

If I am looking to support my pro capital punishment theories which of the following ethical theories would best support my stance? I must use two. Absolutism, ethical formalism, utilitarianism, hedonism-stoicism, natural law, ethics of virtue, ethics of care, egoism, cultural...

*November 28, 2012*

**Physics**

Alright but does anyone know how to solve this?

*November 27, 2012*

**Physics**

Thanks for the thought anyways!

*November 27, 2012*

**Physics**

How is asking for help on a homework help site cheating?? I don't know where to start...

*November 27, 2012*

**Physics**

Two fraternities are in a tug of war. Theta Chi is pulling with a total force of 4,748 newtons to the east and Tau Kappa is pulling with a total force of 3,969 newtons to the west. What is the magnitude and direction of the resultant? Which team will win? Is it better to pull ...

*November 27, 2012*

**math**

Find the accumulated amount A, if the principal P is invested at an interest rate of r per year for t years. P = $24,000, r = 7%, t = 6, compounded monthly $ ?

*November 27, 2012*

**Physics Can you help me get started**

A 24-g ice cube floats in 180 g of water in a 100-g copper cup; all are at a temperature of 0°C. A piece of lead at 92°C is dropped into the cup, and the final equilibrium temperature is 12°C. What is the mass of the lead? (The heat of fusion and specific heat of ...

*November 26, 2012*

**math**

Find the present value of $31,000 due in 4 yr at the given rate of interest. (a) 6%/year, compounded quarterly $ ? (b) 3%/year, compounded quarterly $ ?

*November 26, 2012*

**math**

Find the present value of $31,000 due in 4 yr at the given rate of interest. (a) 6%/year, compounded quarterly $ ? (b) 3%/year, compounded quarterly $ ?

*November 25, 2012*

**math**

Find the present value of $53705.69 due in 5 yr at an interest rate of 8%/year compounded continuously. $ ?

*November 24, 2012*