Sunday

April 20, 2014

April 20, 2014

Total # Posts: 212

**chemistry**

Al(s) + H2SO4(aq)-> Al2(SO4)3(aq) + H2(g) Consider the unbalanced equation above. What volume of 0.490 M H2SO4 is needed to react with excess aluminum to produce 1.60 g of Al2(SO4)3? Use a molar mass with at least as many significant figures as the data given.

**chemistry**

H2SO4(aq) + NaOH(aq)-> Na2SO4(aq) + H2O(l) Consider the unbalanced equation above. What is the concentration of the original sulfuric acid solution if 60.5 mL of the acid reacts with 18.0 mL of 0.110 M sodium hydroxide?

**chemistry**

If 180.0 mL of 0.270 M NaOH are mixed with 230.0 mL of 0.500 M NaOH, what is the molarity of the final solution? Assume the volumes are additive.

**chemistry**

How many mL of 4.50 M NaOH must be diluted to produce 160.0 mL of 2.50 M NaOH?

**statistics**

A SINGLE CARD IS SELECTED FROM A STANDARD DECK OF 52 CARDS. IF YOU KNEW THAT THE CARD WAS A PICTURE CARD, WHAT IS THE PROBABILITY THAT IT WAS ALSO RED?

**Chemistry**

Silver(I) nitrate and sodium sulfate react to form silver(I) sulfate and sodium nitrate. Suppose 45.98 mL of 0.060 M silver(I) nitrate solution and 26.64 mL of 0.10 M sodium sulfate solution are mixed. What is the maximum number of grams of silver(I) sulfate that can be made?

**Chemistry**

N2(g) + O2(g) --> N2O5(g) (a) Consider the unbalanced equation above. What is the maximum mass of N2O5 that can be produced when 43.0 g of N2 and 43.5 g O2 react?

**College Chemistry**

C6H6(l) + Cl2(g) --> C6Cl6(s) + HCl(g) Consider the unbalanced equation above. What is the maximum mass of each of the products that can be formed when 72.5 g of C6H6 and 49.0 g Cl2 react?

**math**

how can you use subtraction to complete an addition pattern use exercise 3 as an example.

**physics**

What is the mass of a person who weighs 750N?

**cjs**

The current threat of terrorism has made many legislatures in Congress think about the United States combining all the police agencies into one national police organization. The centralization of power would stop the discombobulated nature of the 3 government levels of police ...

**math**

ms fuller has 2 2/6 pies left over from her party. write the number of pies left over as a fraction greater than 1

**science**

what is the massof fresh water(p=1.00g/cm^3) in a 72.8L tank?

**chemistry**

If you ran silver nitrate on tap water and distilled water,which one may show a slightly positive reaction? Why?

**science**

Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?

**science**

Betsy and Michael are 150 meter apart, Michael is walking toward Betsy at a constant speed of 2.5m/s. start from the rest, how long it take to meet?

**Subject agreement**

You --------to the old north church (walk) do you use (are walking) or stays the same for present tense?

**math**

-[-(-k)] -(-2)(-2 + k) = -k - (4k + 3)

**math**

-[-(-k)] -(-2)(-2 + k) = -k - (4k + 3)

**maths for social science**

. A project management consultant estimated that if a particular project was completed, that t years after its date of completion, P thousand persons would be direct beneficiaries of the project, where P (t) = t3/3 - 5t2 +20t, 0<t<12 For what value of t will the maximum ...

**calculus**

. A project management consultant estimated that if a particular project was completed, that t years after its date of completion, P thousand persons would be direct beneficiaries of the project, where P (t) = t3/3 - 5t2 +20t, 0<t<12 For what value of t will the maximum ...

**I NEED HELP. PLEASE**

Thank you.

**I NEED HELP. PLEASE**

Thanks! How would you know whether to add or subtract?

**I NEED HELP. PLEASE**

I do not understand point-slope and standard form. Please help me.

**Statistics**

She DID do that.

**Math-PLEASE HELP ME**

I do not understand point-slope and standard form. Please help me.

**Reading**

"CALL". "BURN". I've already answered this.

**Calculus**

Define the quotient rule.

**This Website.**

Why do some people's posts get deleted?

**Reading**

THe base word is "call". The base word is "burn".

**Reading**

She's right.

**Math/Algebra**

dan is 12 inches taller than jay. use X for jay's height. which expression shows dan's height?

**math**

5/x=10/3x+4

**Social Studies**

What was the Albany Plan?

**Math**

Simon and Leah had Eight stamps. Leah had three times as many stamps as Simon. How many stamps does Leah have??

**English**

I would ask to help the person

**math**

315 divided by 5

**math**

5 divided by 315

**physics**

will i need hlep with the right of citizens of the united states orto vote shall not be denied or abriged by the united states or by any state on account of sex so what the answer

**History**

i dont entirely know about the spanish american war, but world war one was caused by many things. high tensions formed by various alliences, nationalism and the dividing of africa among european powers, had put the world on edge. these tensions exploded when a young serbian st...

**8th grade math**

two congruent opposite sides of a trapezoid are each 4 inches longer than the top base of the trapezoid. The top base of the trapezoid is one third as long as the bottom base of the trapezoid. If the perimeter is 56 inches, what is the length of each of the four sides of the t...

**college Chemistry**

Popcorn kernals pop independently (i.e. unimolecularly). For one brand at constant temperature, 11 kernals pop in 10 seconds when 240 kernals are present. After 145 kernals have popped, how many kernals will pop in 10 seconds?(Your answer may include fractions of a kernal) I u...

**comp**

How do I write two sentences about family financial goals using the past progressive and future progressive tenses?

**algebra**

polynomials 8j^3-4jk^3-7

**Chemistry 214**

Help! A soultion contains 0.100 Pb(NO3) and 1.00x10^-5 M AgNO_3. It is intended to separate out the silver by selective precipitaion of AgI. What is the maximum percentage of total silver that can be recovered free of contamination by PbI_2? (ksp for AgI=1.5x10^-13.. Ksp for P...

**Grammer**

What is the simple subject and simple predicate in the sentence The smell of cooking is delicious to the hungry campers?

**Statisitcs**

Suppose that X and Y are independent discrete random variables and each assumes the values 0,1, and 2 with probability of 1/3 each. Find the frequency function of X+Y.

**math **

just do wait here is a example 34 times 41 take the 30 aND THEN THE ONE AND TAKE THE 40 AND THE THE 1 AND 30 TIMES= 120 AND THEN MULT. 4 TIMES1 WHICH IS4 AND ADD THEM TOGETHER AND IT IS 124.

**PHYSICS**

1.53 seconds to get to highest point so 1.53x2 to reach the end of the porabola. 3.06 seconds

**social studies**

what is lattitude?

**8th grade**

What two European countries helped start the Age of Explorations?

**2nd Grade Math**

I'm in 6th grade, the answer is, 10. :)

**math**

The width of a rectangle is 6 cm less than the length. A second rectangle, with a perimeter of 54 cm, is 3 cm wider and 2 cm shorter than the first. What are the dimensions of each rectangle. Please give complete answer :)

**physics**

138 or rounded to 140!

**psychology**

Trace the memory system from stimuli into long-term memory. Siscuss the features of each step and factors that enhance or impede information flow in each step of the process. Explain proactive and retroactive interference and how you might counteract their effects while studyi...

**5th grade**

How do you do double dight divison

**physics**

Tarzan, mass 85 kg, swings down on the end of a 28 m vine from a tree limb 4.4 m above the ground. How fast is Tarzan moving when he reaches the ground?

**2nd grade**

I'm in 6th grade, the answer is 4, the reason is because, 20 divided by 4=5 and 5x4=20, so the answer is,4.

**Business/ Math/ Investment**

I Only Need Question 3. I have completed the rest. I have had several solutions and cannot come up with an answer. Thank you! Envision that you have served as business manager of Media World for over 2 years. You have noticed that for the last 12 months the business has regula...

**Business Analysis / Investment **

Help! I have had several solutions and cannot come up with an answer. Thank you! Envision that you have served as business manager of Media World for over 2 years. You have noticed that for the last 12 months the business has regularly had cash assets of $20,000 or more at the...

**English**

the plot of strange objects by gary crew

**Microbiology**

Which of the following tests are used to differentiate between these bacteria: Tests: Bacitracin Test, SXT Test, CAMP Test, Enterococcosel Agar, 6.5% NaCl Test and Optochin Test A) Streptococcus viridans and Streptococcus faecalis B) Group A and Group B Streptococci C) Group B...

**physics**

Find the tangential acceleration of a freely swinging pendulum when it makes an angle θ with the vertical. (Use theta for θ and g as necessary.) i tried 2.56 as an answer and it was wrong, so im guessing im suppose to use symbols?

**physics**

A space station is shaped like a ring and rotates to simulate gravity. If the radius of the space station is 150 m, at what frequency must it rotate so that it simulates Earth's gravity? [Hint: The apparent weight of the astronauts must be the same as their weight on Earth...

**physics**

A roller coaster has a vertical loop with radius 17.9 m. With what minimum speed should the roller coaster car be moving at the top of the loop so that the passengers do not lose contact with the seats? (how do i go about in solving this)

**statistics**

The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that is takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the red barn model. Assume the assembly times follow the normal di...

**Business**

Writeacher, I know what you mean! the assignment is quit simple just requires a lot of reading and some research online but this one part of the first question is sooo vague and the books are even more vague not to mention insufficient. Your idea of it is the same as mine so I...

**Business**

In one of my assignments I'm suppose to explain the types of input text in business case analysis. I read my book and the resource book but all it says is that there are more types of input texts than the case study itself. :S I tried searching online for more indepth info...

**math**

No, I still do not understand. why did you subtract 29 from 18? what do you do with 11?

**math**

Make up a set of 7 numbers having the following landmarks: mode:21 median:24 maximum:35 range:20 I do not understand.

**english**

difference betwween following words. i have these words for spelling and iont know the difference. can you help me. annyway any way,all right alright,every one everyone, already all ready, there's their's, anyone any one, altogether all together

**Math**

Your mom is a sporting person, so when it's close to your bedtime, she will have a contest with you to see if you get to stay up and extra half-hour to play a computer game. You get to draw a card from a well-shuffled deck. If you draw a face card, an ace, or any heart, sh...

**Math**

Back in the old days, couples would enter marathon dance contests to win money. They would dance continuously, with only short breaks for food and drink. Some contests would go on for over a week. How many hours of dancing would there be in a 7-day week?

**physics**

Find the resultant force of a 32-N force pulling horizontally on a wooden crate and a 20-N force pulling at an angle of 49 degrees upward of horizontal. (Your answer should include magnitude and direction of the force)

**science**

What will happen if the polar bear became extinct?

**biology**

In D. virilise, the mutations dusky body (dy), cut wings (ct) and white eyes (w) are all recessive alleles located on at different places on the x chromosome. Females heterozygous for all three mutations were crossed to dy ct w males, and the following phenotypes were obtained...

**math**

A car accelerates 15m/s^2 the car has a mass of 45000kg. what force is needed for this to occur?

**algebra**

n+5=5+n? commutative, associative, and identity properties

**essay writing**

what were the speakers arguments and counterarguments in charles foster kane speech

**college**

On january 1, 2007 yarrow corp. had 1000000 shares of common stock outstanding. on march 1 the corp had issued 15000 new shares to raise additional capital. on july 1 the corp. declared and issued a 2 for 1 stock split. on october 1 the corp. purchased on the market 600000 of ...

**Physics**

1/12 * L

**math**

Its 43.6

**Math**

Here is the question that I need to answer: Mr.T wanted to remodel his box, He wanted to make it the shape of a perfect regular dimension. A.) How many total degrees would the interior of Mr.T's decagon have? SHOW WORK. B.)How many degrees would each angle be in Mr. T'...

**intergrated science**

can u unsramble this word for me please the assatiepr

**maths**

the galaxy we live in is roughly lens shaped,and pins.its diameter is given inlight years. (1 light year=9.5Exp12km) calculate the circuference or our galaxy in kilometres. the earth is at a point 3Exp4 light yaersfrom the centre.How far does the earth travel in one turn of th...

**English (Frankenstein essay)**

Dont av a clue wot to do on it haha x

**English (Frankenstein essay)**

Dont av a clue wot to do on it haha x

**English (Frankenstein essay)**

*Instead saying she tried to give the monster humanity. Say she tries to give the monster human qualities, this is called personification. *mary contrasts the creation of 'adam' by god, with the creation of the monster. Because god see his creation as good but frankens...

**AP History**

Thank you!

**AP History**

What was the common term for the newly liberated slaves after the civil war?

**Physics**

I am hoping that I can find some help here. how do I convert newtons times seconds (NS) to Kilograms times meters per seconds squaired over seconds. (kgM/s2)/s

**intergrated science**

assatierpr

**Pharmacology**

This is super confusing, I'm sorry! The homework: You have to administer simultaneously two drugs which are each 90% protein bound when administered separately. Please use the law of mass action to calculate how do you have to change the administered doses to obtain the sa...

**for SraMgin**

i still dont understand why he thinks "selective ethics" is wrong, though

**Philosophy**

i still dont understand why he thinks selective ethics is wrong, though.

**Philosophy**

what is selective ethics and why is it wrong to use it in science?

**Physics**

what is the angular speed, in rad/s, of a point on the surface of Jupiter at latitude 72 degrees N?

**Physics**

One cubic meter of granite has a mass of 2.70E3 kg, and one cubic meter of gold has a mass of 1.93E4 kg. Find the radius of a granite sphere whose mass is the same as that of a gold sphere of radius 1.07 cm. Any help is appreciated!!

**math.chem**

Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know the answer is 0.0306, but how many sigfigs should the final answer have? plea...

**MATH/CHEM PLEASE HELP!**

Give the answer to the following calculation with the correct number of significant digits. Report your answer in scientific notation. (6.17 x 10-1 + 4.9 x 10-2) x (3.95 x 10-2 + 6.454 x 10-3) i know how to solve for the answer, i just dont know the correct number of sig figs!...

Pages: <<Prev | 1 | **2** | 3 | Next>>