# Chemistry Very Urgent!!

69,524 results

**math**

fatima bought 1200 eggs at rs.16 a dozen. At what price per hundred must she sell the eggs so as to earn a profit of 15%. plz its urgent very very urgent try to solve soon.....

**To ANY SCIENCE HELPER URGENT**

1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Please this is very urgent, I have finished everything else but these r my last 2 questions that I don't know! Please help! Thanks:)

**VERY, VERY URGENT 4TH GRADE MATH!!!!!!!!!!!!!!!!!!**

What is 44 divided by 7 with a remainder?

**Chemistry VERY URGENT PLEASE**

What does the chemical formula, MgSO4 * 7H2O, become when the hydrated is heated? I got so far is MSO4 * 7H2O + Heat ---> MgSO4 + H + O

**urgent urgent urgent**

what is the chemical make up of actin and myocin

**English-URGENT-HELP NEEDED!**

Can ANYONE please help me by going to either the very bottom of this page or the top of the next and click on "English-URGENT-HELP NEEDED!"? I really need some help on that one and I'm afraid no one will find it and I'll have to keep posting it over and over. THANK-YOU ...

**math very urgent**

What is the area of a shape that that has 8 sides and has 1 , 1 , 8 , 1 , 1 , 3 , 3 and 10?

**English - Very urgent**

How does pearls represent hope?

**chemistry**

can anyone tell me about the molecular orbital energy order in energy level diagrams????its molecular n not atomic..... plz tell me its very urgent!!!!

**chemistry urgent urgent**

Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the treatment/management of genetic diseases?

**chemistry urgent urgent**

... the hiv virus that causes aids destroys the immune system in the body. classify the hiv virus and explain the statement.

**math VERY URGENT**

Are there any websites where i can make a 3d shape and see the net for it?

**simultaneous equation very dificult need help itz urgent**

A-C=B/2 A-B=C/6 B+C=32 find A,B,C

**physics help needed very urgent !!!**

The figure shows four penguins that are being playfully pulled along very slippery (frictionless) ice by a curator. The masses of three penguins and the tension in two of the cords are m1 = 10.5 kg, m3 = 14.7 kg, m4 = 22.05 kg, T2 = 120 N, and T4 = 236 N. What is the mass of ...

**Chemistry *URGENT***

URGENT help! 3. A rock sample was dated using potassium-40, Neasyrenebt ubducated tgat 1/8 of the original parent isotope is left in the rock sample. How old is the rock? 5. When a sample of lava solidfied, it contained 28g of uranium-238. It that lava sample was later found ...

**Math - Very urgent.**

Use multiples to find the LCD for each pair of fractions. a) 1/2, 1/3 b) 1/4, 1/5

**math urgent urgent urgent**

perpendicular to line -2x+y=7 contains the point (-4,-2) the equation of line is

**Chemistry Very Urgent!!**

A 0.035 M solution of a weak acid (HA) has a pH of 4.88. What is the Ka of the acid? HA ==>H^+ + A^- Ka = (H^+)(A^-)/(HA) pH = -log(H^+) You know pH. Convert that to (H^+). (H^+)=(A^-) so plug those into the expression for Ka. (HA) = 0.035 M - (H^+). Plug that in. Calculate...

**math urgent urgent urgent**

x+2y=12 find intercept a circle equation x^2+y^2+4x-4y-1=0 and graph 2)find domain and range f(x)=x^2-4x-5 find vertex of f(x) =x^2+4x-21

**math question 3- very urgent !**

Find x* on [0, 2] such that f(x*) equals the average value of f(x) = 5x + 9 over [0, 2].

**math VERY URGENT+IMPORTANT**

what is 6 minus 2 and one half? please explain answer

**Math - Very urgent.**

Use prime factors to find the LCD for each pair of fractions. a) 1/4, 1/8 b)1/6, 1/18

**Chemistry**

Which of the following indicates the exsistence of stron intermolecular forces of attraction in a liquid? a very low boiling point a very low vapor pressure a very low critical pressure a very low viscosity a very low heat of vaporization

**urgent urgent urgent**

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. explain the process the muscle go through

**Geometry(VERY URGENT!!)**

In triangle ABC, D is the centroid and M is the midpoint of segment AC. If BD=x+9 and DM=6, find MB. Answer choices: 9,18, or 3.

**math VERY URGENT AND IMPORTANT**

Estimate the product of 3 7/8 and 25. Describe your method. Please answer and explain.

**chemistry urgent**

hydrogen gas is collected in a bottle, and the pressure of the gas is 892 torr at 24 °C. what is the pressure of hydrogen gas when the temperature decreases to 20 °C? chemistry - DrBob222, Tuesday, November 30, 2010 at 1:25pm (P1/T1) = (P2/T2) Dear Dr Bob: is this a right ...

**high level chemistry**

can anyone tell me about the molecular orbital energy order in energy level diagrams????its molecular n not atomic..... plz tell me its very urgent!!!!

**Chemistry (URGENT)**

Suppose a reaction involved a finely ground powder reacting with a concentrated acid. Suggest three methods of decreasing the reaction rate. 1. By placing the reactants in cold water. 2. ? 3. ? Can someone please help? I can't think of what else I can do to slow down the ...

**Chemistry (urgent)**

Suppose a reaction involved a finely ground powder reacting with a concentrated acid. Suggest three methods of decreasing the reaction rate. 1. By placing the reactants in cold water. 2. ? 3. ? Can someone please help? I can't think of what else I can do to slow down the ...

**urgent urgent urgent**

A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. •Explain the chemical process that occurred in ...

**Technology ..Urgent help**

Analyze an example of new technological use that contradicts the principle of technological determinism. In other words, think of an example in which culture, social context, or other factors result in very different uses of an identical technological device. “New technology...

**urgent...maths**

Find the sum of all primes p, such that p divides u(p), where u(p) is the p-th Fibonacci number. this iss very urgentt...

**english**

how to write in the conclusion at the end of the medicinal plants project?please give me an examples with details.It's very urgent.

**Science- Very Urgent**

is it reasonable to expect that these models will change again in time? Explain. Like the bohr diagram and etc;

**math urgent urgent urgent**

1)let f(x) be a polynomial function explian how to use the factor theorem to check if (x-c) is a factor of F(x) 2) use synthetic division to factor X^2-2x^2-9x+18 completly

**Statistics PLZ HELP Urgent!!!!**

PLZ Help me with the following questions! very urgent! The marketing department of a company would like to introduce 12 monthly special products in the coming 12 months. If these monthly special products are selected randomly from 24 products, find the probability that two ...

**Organic Chem (URGENT)**

What is the monomeric unit of a chain of molecules joined by peptide bonds? Answer:?? If anyone can help with this question. Thank you very much.

**geo..very urgent**

describe some factors that likely affect the climate of the ivvavik national park. Think of LOWERN.

**Social Studies (URGENT)**

10. Why did many Native people start adapting to Victorian society? Can someone please help me answer this question? Thank you very much.

**anatomy/urgent**

What is the functional advantage of the cat having so many muscles performing the same or very similar action? How does this relate to the human musculature?

**Chemistry-pls help urgent**

Posted by candy on Tuesday, October 12, 2010 at 5:04pm. 1) How do I prepare 2M nitric acid from 65% concentrated nitric acid? 2) How do I prepare 17% ammonia from 25% concentrated ammonia? Please show calculation steps. Thanks. Chemistry -pls help urgent - DrBob222, Tuesday, ...

**English language**

what could be an example of something that is urgent but is not important? and something that is important but not urgent? these questions refer to daily actions or well any actions, i have absolutely no idea how to answer that. Sure doesn't urgent and important meant almost ...

**math VERY URGENT+IMPORTANT**

What is the area of a shape that that has 8 sides and has 1 , 1 , 8 , 1 , 1 , 3 , 3 and 10 as the lengths of the 8 sides?

**PHYSICS URGENT URGENT URGENT URGENT HELP NEEDED!!!**

A uniform ladder of length 20.0m and weight 750 N is propped up against a smooth vertical wall with its lower end on a rough horizontal surface. The coefficient of friction between the ladder and this horizontal surface is 0.40. (b) Work out and add the numerical values of ...

**Very Urgent Help Here (Math)**

Please solve it step by step. Integrate: ∫(x^2/(√(x^2+1))dx

**Socials Studies Project (URGENT)**

Researching the Northwest Coast people. I need help with finding info on agriculture, nomadic, hunters, fishers. Thank you very much!!

**Health**

Sometimes a patient needs additional care that his or her regular physician cannot provide. In this instance, the physician can make a referral for a patient to see another physician. What are the three types of referrals? (1 point) regular, urgent, fast normal, fast, STAT ...

**Math urgent**

explain how to compute the xy term of the product (3x-4y)^2? if possible with solution please.... its urgent

**physics(please help...very urgent.....)**

A ball is hit at an angle of 36 degrees to the horizontal from 14 feet above the ground. If it hits the ground 26 feet away (in horizontal distance), what was the initial velocity? Assume there is no air resistance. i have posted the same question earlier and i got some steps ...

**Biology - very urgent**

Is respiratory control more sensitive to small changes in arterial PO2 or in arterial PCO2?

**Very urgent please...**

What is the real birthdate of Kalpana chawla ,the first indian,asian woman astronaut who died over texas skies on february 1 st 2003?

**VERY URGENT!!!**

Large numbers of people have moved from rural areas to urban areas in Asia, Africa, and Latin America because (1 point) they want to live life at a slower pace. there are often few jobs and a shortage of land to farm in the countryside. conditions in large cities are very ...

**egypt**

urgent!!!!urgent!!!!!! have to go to bruins game at 5:45whats the magical fiqures inbetween the rapping in a mummy?

**Venn Diagram (URGENT)**

What are 6 similarities between Canada and Haiti? 1. French Influence 2. 3. 4. 5. 6. Please someone help, this is urgent. thank you.

**MATHS! URGENT!**

describe how each sequence is generated and write down the next two terms: a) 40 41 43 46 50 55 b)90 89 87 84 80 75 c)1 3 7 13 21 31 d) 2 6 12 20 30 42 PLEASE HELP its urgent!

**Chemistry**

Why are numbers used in chemistry often expressed in scientific notation? They otten are very large or very small. Printing those types of numbers is onerous.

**science-urgent**

What are differences between Continental Drifts and Plate Tectonics? I need at last 4 for each. Please help its urgent!!!!! Thanks a bunch! Ellie

**Science- urgent-review**

what type of galaxy do astronomers consider to be the oldest? It's urgent because I am studying for a grade 9 exam but I don't know what this is.. please help.

**Biology (urgent)**

Sexual reproduction in trees. How does pollen transport in trees differ from flowers. Please help me!!! I can't find an answer for this. thank you very much.

**Math (URGENT)**

Expand and simplify. 12-2(3y-2)(3y+2)-(2y+5)(2y+5) Textbook Answer: -22y^2-20y-5 I don't know how to get that. Can someone show me the step by step process? thank you very much.

**Chemistry(Please help, thank you)**

I have to calculate the concentration of I2 produced (# of moles of I2 produced / L) based on the stoichiometric ratio in the following equation. 2S2O3^2- + I2 -> 2I^- + S4O6^2- Chemistry(Urgent, please help) - DrBob222, Sunday, February 26, 2012 at 9:47pm If you know the ...

**Chemistry**

Please,tell me the ways I can use to understand chemistry better.I need help,and it is urgent because am starting to drop.

**Calculators- memory?**

For the TI-84 plus edition calculators do the programs you created and notes you put on there get deleted once you change the batteries? this is a very urgent question. thank you.

**quantum physics**

the quantum factor algorithm for N=91 is carried out. What is the period k of the periodic superposition set up if it chooses x=8? Guys please help...its very urgent!!

**Math**

This isn't very urgent but can you please break this down to me step by step? I really don't understand. I get that I'm supposed to use the order of operations but I still get lost. 2[4(9-7)+1]/3

**chemistry urgent urgent**

Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are caused due to the differences between the sodium atom and sodium ion?

**help PLEASE! URGENT!**

ok, i need help w/ this problem. (4x^3 + x^2 + 3) + (x^3 + 2x^2 +1) can u please explain how to do this please? i'm very lost. Thanx! -Ally

**math - very urgent !**

Verify that f(x) = x^3 − 2x + 6 satisfies the hypothesis of the Mean-Value Theorem over the interval [-2, 3] and find all values of C that satisfy the conclusion of the theorem.

**math**

pls,this is very urgent.can anyone solve this within 10 mins.. 0.000143 over 1940000 equals k*10powern,where 1 greaterthan equals to k greater10 and n are whole number.The value of k and n are......

**Electricity**

Very very urgent please help me... A small ball with mass =0,4g charged with electricity= 3x10^(-10) coulomb is united with the edge of a silk rope with length=8cm. The other edge of the rope is on a big insulating material with concentration of the electric energy: 25x10^(-6...

**History reflections URGENT**

HELP! Trying to find information on Michael Kaznelson author of Remembering the Soviet State: Kulak Children and Dekulakisation. This is urgent so thanks for all your help.

**Math**

Sean is playing a game where you toss a coin and roll a number cube. How many possible outcomes?Show it as a fraction,decimal, and a percent. If p= probability, what is P( heads,odd)??? Please answer very urgent!!!!

**Chemistry (URGENT)**

Balance the following equations. 3. C12H22O11 + O2 = CO2 + H2O Answer: C12H22O11 + 12 O2 = 12 CO2 + 11 H2O 8. CH3OH + O2 = CO2 + H2O Answer: 2 CH3OH + 3 O2 = 2 CO2 + 4 H2O I balanced all the others just fine. But I seem to be having trouble with these two. Can someone show me ...

**math question 2- very urgent !**

Given f (x) = √(7 + x) + 4 . Use the rectangle method to approximate the area on the interval [0, 8] using 4 rectangles. (Assume the graph goes through the midpoint of each rectangle.)

**RE: Math Urgent**

I posted this earlier but I think I phrased it in a confusing way Find g(x) + g(x) if g(x) = {(-4,5), (-2,-3), (0,5), (1,3), (3,-1), (5,5)} and g(x) = {(-3,-2), (-2,6), (-1,0), (1,0), (2,-6), (3,5), (4,0), (6,-2)}. I don't need the whole thing done i'm just very confused on ...

**English**

I have an urgent question. I'm going to Australia for my holiday. I can speak English pretty well and i could practise it while I was there. (is it grammatically correct? Is the meaning that of a conditional clause? Thank you very much in advance

**Very Urgent Help Here (Math)**

Area under y = -x^2 + 1 between x = 0 and x = 1 is rotated around x-axis. Find the volume by shell method. (Please solve it using step by step solution).

**help PLEASE! URGENT!**

ok, i need help w/ this problem. (4x^3 + x^2 + 3) + (x^3 + 2x^2 +1) can u please explain how to do this please? i'm very lost. Thanx! -Ally whoops, sorry i didn't mean to post twice! gather like terms.. (4x^3 + x^3)+(x^2 + 2x^2) +(3+1)....

**MATHS VERY URGENT :l**

In each fruit hamper there were 7 oranges and 5 apples. 9 hampers were sold. How many pieces of fruit were sold together?

**GEOMETRY TANGENTS**

Triangle ACE is a circumscribed triangle. Points B, D and F are the points of tangency. If AC= 16 and AE is 9 cm and CE = 15 cm . Find AD, FE and CD HELP PLEASE VERY URGENT

**Trigenometry**

VERY URGENT! PLEASE HELP SOLVE! tan(x)+1=sqrt(3)+sqrt(3)cot(x)as well as sin(2x)= 2 cos^(x) 4cos2(x) = 8sin(x)cos(X)

**VERY URGENT MATH(Formalizing Relations & Functions**

What is the domain of the function below? {(0,2), (3,1), (5,2), (8,4)}? (1point) Is the following relation a function? {(0.3, 0.6), (0.4, 0.8), (0.3,0.7), (0.5,0.5)} (1point)

**french**

i want to learn this language. Please write some french sentences and also translate them into english. Please earlier, its very urgent.

**spanish!!...urgent!...please help**

how did the geography influence the migration and exploration of colombia? venezuela? i need websitres for this urgent...please help asap... :(

**urgent alg 1**

add or subtract 2 2 (2t -8t)+ (8t + 9t) second question 3 2 3 (t +8t ) + (-3t ) please helpp its urgent i have the answer butt im not suree pleasee helpp

**ENGLISH URGENT !!!!!!!**

What are good things to buy for a 17 year old boy that are not that expensive???? this is really urgent for a part of my english project..... pleeeeeeeeeeeeeeeeeeeese help!!!!!!!

**Calculator problem-- urgent!!!**

Hi, I'm trying to graph the equation "y=3x" on my graphing calculator BUT the "x" is in exponential form-aka small and up to the right of the 3. How do I graph it? I know that you go to "y=" and then I typed a 3, but how do I get that little x? Thanks very much

**French Cuisine (URGENT)**

I need to find 5 foods (dishes/meals) from before the french revolution. I've searched and can't find anything. Can someone help me please? Thank you very much

**GR.10 CIVICS!!!!!URGENT**

CAN SOMOENE PLEASE GIVE ME A LINK TO A PICTURE THAT HAS TO DO WITH OR IS RELATED TO ABORIGINALS GAINING THE RIGHT TO VOTE IN CANADA(1960).PLEASE! ITS URGENT.THANKS

**Math**

You are randomly selecting one catches on a 52 card deck.find the probability of selecting: a 2 or a 3 I got 2/13 A red 2 or a black 3 I got 1/13 I want to make sure it is correct This is very urgent Thanks

**College chemistry**

This is my first time taking chemistry and I am VERY VERY confused On the step involved to find out how many calories to warm 58mL of water from 10 degress C to 100 degress C and vaporize it at 100 degress C.

**chemistery lab..urgent**

hi..can someone hwlp me out here on how we can calculate the moles of H2T(phthalic acid)?? its urgent for my lab this evening 1:00pm friday

**chemistry**

In general, which reaction(forward, reverse, or neither) is favored if the value of K at a specified temperature is a. equal to 1? b. very small c. very large

**Spanish (URGENT)**

I'm learning about the irregular verbs "Conocer" and "Saber" The teacher told us how to differentiate between the two and when to use which. But I still find it very difficult to know when to use which one. Can anyone help? Are there any tricks or tips that will help? Muchas ...

**math VERY URGENT**

Mrs. Black has one begonia plant. If she buys two begonia plants each year for every one she has, how many will she have in four years? Please explain the answer.

**chemistry**

please me,,,,,its urgent...what is the structural formula of the toxaphene?

**chemistry**

please me,,,,,its urgent...what is the structural formula of the toxaphene?

**chemistry need help**

In general, which reaction(forward, reverse, or neither) is favored if the value of K at a specified temperature is a. equal to 1? b. very small c. very large

**Quick Help (URGENT)**

1. What percentage of teen parents live in poverty? Is it 75 percent?? 2. How can you get HIV? Unprotected sex, anal, oral, vaginal. 3. What are the other methods of transmission of HIV? ??? Can someone check over my answers and help me with number 3? Thanks very much.