Questions Asked on
May 12, 2010

PHySics
A 1.63 nF parallelplate capacitor is charged to an initial potential difference ΔVi = 100 V and then isolated. The dielectric material between the plates is mica, with a dielectric constant of 5.00. (a) How much work is required to withdraw the mica
asked by Physics 
11th Grade Maths
The difference between the two acute angles of a right angled triangle is 2 π/5 radians. Express the angles in degrees. I’ve multipled 2 π/5 * 180/ π and got the result 72 degree But the answer is 81 degree and 9 degree. Please explain me!!!
asked by Akash 
Chemistry
How many kilojoules of heat are required to melt a 10.0 g popsicle at 0 degress C? Assume the popsicle has the same molar mass and heat of fusion as water. Could someone tell me what equation to use to solve this or the steps? Thank You.
asked by Anonymous 
Science
What is the probable relationship between rebound centers and locations where ice accumulates? What is the probable relationship between rebound centers and thickness of ice in Canada?
asked by Christopher 
Chemistry
What does it mean to say that a solution is saturated with a solute? (Select all that apply.) a) A solute that is at equilibrium with undissolved solvent. b) A solvent that is at equilibrium with solute. c) A solution contains the maximum amount of solvent
asked by Michael 
Math
Mrs Allen spends 3/5 of her money at the grocery store. Next she spends 3/5 of her remaining money at the petrol station. She then has $8.00 left. I know the answer is $50 BUT I need to explain why its right please explain on a yr 7 level would be helpful!
asked by Allysa 
Chemistry
1. How much heat is absorbed when 63.7g H(small 2)O [water](l) at 100 degrees C and 101.3 kPa is converted to steam at 100 degrees C? Express your answer in kJ. Is there an equation? 2.How much heat (in kJ) is released when 0.677 mol NaOH(s) is dissolved
asked by Anonymous 
chemistry
Ammonia, NH3, is used as a refrigerant. At its boiling point of 33ºC, the enthalpy of vaporization of ammonia is 23.3 kJ/mol. How much heat is required to vaporize 125 g of ammonia at 33ºC?
asked by b 
calculus
a toy wagon is pulled by exerting a force of 15 pounds on a handle that makes a 30 degree angle with the horizontal. find the work done in pulling the wagon 50 feet.
asked by Nancy 
BIO. LIFE SCIENCE
THE OFFSPRING OF A CROSS BETWEEN A PLANT WITH PURPLE FLOWERS AND A PLANT WITH WHITE FLOWERS ARE 23 PLANTS WITH PURPLE AND 26 WITH WHITE FLOWERS. USE THE LETTER P FOR PURPLE AND p FOR WHITE. WHAT R THE GENOTYPES OF THE PARENT PLANTS.
asked by DREW 
chemistry
for Fe + V2O3 > Fe2O3 + VO write the two half reactions and calculate voltage
asked by Anna 
Chemistry
(1) Why are fractional coefficients permitted in a balanced thermochemical equation? In thermochemical reactions, only small amounts of matter are considered. If fractional coefficients were not used, the scale of the reaction would be excessively large.
asked by Zacky 
Physics
3.A certain radar installation tracks airplanes by transmitting electromagnetic radiation of wavelength 3 cm. a) Show that the frequency of this radiation is 10 GHz. b) Show that the time required for a pulse of radar waves to reach an airplane 5 km away
asked by Anonymous 
Chemistry
Sulfur trioxide, SO3, is made from the oxidation of SO2, and the reaction is represented by the equation 2SO2 + O2 2SO3 A 25g sample of SO2 gives 18 g of SO3. The PERCENT YIELD of SO3 is?
asked by Chris 
Physics
A soccer player kicks a rock horizontally off the a 40 m high cliff into the pool of water. if the player hears the sound of the splash 3 sec., what is the initial speed given to the rock? Assume the speed of the sound in air to be 343 m/s.
asked by Anonymous 
Chemistry
C3H8 + 5O2 3CO2 + 4H2O How many grams of oxygen are required to burn 7.0 g of C3H8?
asked by Chris 
5th grade
what is the antonym of/for guilty?????
asked by Anonymous 
chemistry
How many moles of NaOH are contained in 100.0 mL of 3.00 M NaOH? /
asked by Carnetta 
algebra
What should you say if you see a tall wroughtiron tower in paris, france?
asked by Bob 
SCIENCE/CHEM
Bromine exists as a mix of bromine 79 and bromine 81 isotopes. an atom of bromine 79 contains: 35 prot.44.neutr.35 electrons 35 prot.and 35 electrons only 44 prot.44 elect and 35 neutr. 35 prot.79 neutr. and 35 electrons 79 protons 79 electrons and 35
asked by Andy 
Chemistry
A clear colorless liquid in an open beaker was heated to boiling. The liquid began to boil at 110°C, and as vapors escaped, the temperature of boiling gradually increased to 115°C, at which the heating was stopped. On the basis of this information, we
asked by Chris 
litureature
According to the analyses of the stories you were asked to read, "A Pair of Silk Stockings" best represents literary
asked by marie 
Chemistry
Why does wood burn rapidly in a fireplace that has a good draft of air? is this answer correct Wood burns in a fire place that has good draft of air. This happens because when there is a good draft of air, they;ll be a higher concentration of Oxygen gas
asked by Marge 
math
You have 700 dollars in your bank account. Suppose your money is compounded every month at a rate of 0.5 percent per month. (a) How much do you have after t years. (b) How much do you have after 100 months
asked by Anonymous 
math
You have 700 dollars in your bank account. Suppose your money is compounded every month at a rate of 0.5 percent per month. (a) How much do you have after t years. (b) How much do you have after 100 months
asked by Anonymous 
Chemistry
An equilibrium mixture at 852 K is found to contain 3.61 x 10^  3 mol/L SO3. Calculate the equililbrium , constant , keq for the reaction where SO2 an O2 are reactants and SO3 is the produce.
asked by Ana 
math
a sock drawer contains 10 white socks, 6 black socks, and 8 blue socks. if 2 socks are chosen at random, what is the probability of getting a pair of white socks?
asked by jane 
Physics
How many electrons make up a charge of 30.0 ìC?
asked by Laila 
statistics
A USU Today survey found that of the gun owners surveyed 55% favor stricter gun laws. The survey Involved 500 gun owners. Test the claim that a majority (more than 50%) of gun owners favor stricter gun laws. Use a .05 significance level.
asked by Lynn 
math
Two adjacent sides of a rhombus are represented by 5x+7 and 6x1. Find the value of x
asked by kaylee 
7th grade math
A farmer grows 196 pounds of potatoes. He sells them to a grocer who divides them into 5 pound and 20 pound bags. if the grocer uses the same number of 5 pounds and 20 pound bags, how many bags of each did he use?
asked by Chris 
Chemistry
Ammonia, NH3, and oxygen can be reacted together in the presence of a catalyst to form only nitrogen(II) oxide and water. The number of moles of oxygen consumed for each mole of NO that is produced is?
asked by Chris 
medical
What are positive and negative ramifications of discounted feeofservice arrangements
asked by Rita 
Math
A pan of cold water with a temeprature of 35 degrees F is brought into a room with a temperature of 75 degrees F. After one hour, the temperature in the pan is 45 degrees F. a) Write a formula for the temperature (T) as a function of time (according to
asked by Melissa 
Math
Use mathematical induction to prove that 5^(n)  1 is divisible by four for all natural numbers n. Hint: if a number is divisible by 4, then it has a factor of 4. also, 1 = 5 +4 This is a take home test so I don't want the answer because I want to know
asked by Help 
Chemistry
1. How much heat in kilojoules is needed to bring 2.00 kg of water from 27.7 to 82.6 ¡ãC (comparable to making four cups of coffee)? 2. Consider the reaction: CH4(g) + 2O2(g) ¡ú CO2(g) + 2H2O(g) Use data in table below Compound S¡ã, J¡¤mol1¡¤K1
asked by write2khin 
Chemistry
Select the two conditions that must be met by a thermochemical equation so that its standard enthalpy change can be written as ÄfH°. a) One mole of each reactant is used. b) All substances are at 0°C and 1.013x105 Pa pressure. c) The reactants are found
asked by write2khin 
SCIENCE/CHEM
when the following equation is balanced , what is the sum of the coefficients? AL2(SO4)^3+Ca(OH)2>Al(OH)3+CaSO4
asked by Andy 
Chemistry
How many grams of lithium nitrate, LiNO3, are required to prepare 3.00 × 102 mL of 2.00 × 10–1 M solution?
asked by Chris 
SCIENCE/CHEM
the volume of a sample of gas is 650.ml at STP. what volumes will the sample occupy at 0.0degrees celsius and 950.torr??? is it 650.ml?
asked by Andy 
PHYSICS
A 4.00 µF capacitor is connected to a 18.0 V battery. How much energy is stored in the capacitor? This should be a relatively easy problem yet, I can't get it. Isn't it just E=.5*C*V^2
asked by Physics 
science /chem
1250.37986 rounded to four significant figures is ??????
asked by Andy 
Biology 205
Can someone please help me? In 1861, Louis Pasteur observed that when yeasts grow in a sugar and protein medium, completely free of air, they ferment vigorously; and for every gram of yeast that forms, 60 to 80 grams of sugar disappeared. If the experiment
asked by Adam 
chemistry
you work for a company that makes ammonia,NH3, which is an important compund needed in the manufacture of fertilizers. Ammonia is produced by the following reaction: N2 + 3H2 > 2NH3(g) on the basis of what you have discovered in this experiment,
asked by Z.......... 
Math
Mrs Allen spends 3/5 of her money at the grocery store. Next she spends 3/5 of her remaining money at the petrol station. She then has $8.00 left. I know the answer is$50 but i don't know how to explain it!!!
asked by Beatrice 
chem
Calculate the ph of a buffer solution that is 0.10M in ammonia and 0.15M in ammonium chloride .kb for ammonia is 1.8*10^5
asked by lina 
SCIENCE
The tracks of the astronauts who landed on the moon are still there in the dust and show no signs of being worn away. This is attributed to the lack of atmosphere on the moon. Which of the following best accounts for the lack of atmosphere? 1)the moon's
asked by kayci 
science
When substances such as sugar and table salt are dissolved in water, the freezing points of the new solutions are lower than the freezing point of water. Also, the more material dissolved, the lower the freezing point. The boiling points of these
asked by kayci 
calculus
a circle of radius 1 rolls around the outside of a circle of radius 2 without slipping. the curve traced by a point on the circumfarence of the smaller circle is callled an epicycloid. use the angle theta to find a set of parametric equations for this
asked by Nancy 
science
a large fiberglass tank was placed in a pit, before pipes could be attached and the tank filled with gasoline, the workers were asked to move the tank to another location. which of the following suggestions would be the best way to raise the tank off the
asked by kayci 
SCIENCE/CHEM
the purity of zinc is to be determined by measuring the amount of hydrogen formed when a weighed sample of zinc reacts with an excess of HCL acid.the sample weighs 0.198 grams. what amount of hydrogen gas at STP will be obtained if the zinc is 100% pure?
asked by Andy 
math
1.binomial 2.degree of monomial 3.monomial 4.perfectsquare trinomial 5.standard form of polynomial A.a polynomial with two terms B.a polynomial in which the terms decrease in degree from left to right and there are no like terms C.a polynomial whith two
asked by ed 
science
when you use a graph to solve a problem about how far a car traveled during a specified time during which it was accelerating how many area calculations do you have to make? what is/ are the shape/shapes you are calculating? a. one area calculation, a
asked by carrie 
math
The owner of a candy store packs all of the sweets from a box into packets of 9, 12, 18 sweets . a. what is the smallest number of sweets a box must contain if no sweets are to remain after packing? b. There are 180 sweets to be packed. what is the largest
asked by guitarman 
SCIENCE/CHEM
how many electrons can be contained in all orbitals with n=4??????
asked by Andy 
calculus
a 100 pound collar slides on a frictionless vertical rod. find the distance y for which the system is in equilibrium if the counterweight weights 120 pounds.
asked by Nancy 
science
you observe a high tide at 3:00 a.m. If it takes about 6 1/4 hours for the tide to change from hight to low, whic of the following statements is correct? A. The next low tide will be at 9:15am B. The afternoon low tide will be at 3:30 p.m C. The evening
asked by kayci 
trig
if P(4,1) is a point on the terminal side of angle (theta), in standard position, then what is the exact value of csc (theta)?
asked by Courtney 
science
which of the following is the best reason salt is sometimes spread on icy highways? 1) when a car drives on the ice, the firstion created between the salt and the ice produces heat that melts the ice. 2)when salt chemically reacts with the water, the heat
asked by kayci 
algebra 5
write the solution in interval notation x
asked by Anonymous 
algebra concept 1
1. Anna has 12 bills in her wallet, some $5 and some $10. The total value of the bills is $100. How many of each bill does Anna have?
asked by Anonymous 
Chemistry
Why does woo burn more rapidly in a fireplace that has a good draft of air?
asked by Marge 
Chemistry
My teacher has us doing a virtual Titration lab on sciencegeek site but never demonstrated a Titration Lab so I really don't undestand it. We have to identify five unknown acids according to how much [H+} of acid is in each solution. We had the choice of
asked by Shelley 
English
In Homer Odyssey  According to Odysseus what is the cause of the doom he and his men face on the Island of Cicones?
asked by Mark 
life science
An organism's ability to maintain steady internal conditions despite changes in its external environment is called biogenesis homeostasis osmosis respiration In an organism, a virus enters, and reproduces within, a(n) host cell infection interferon
asked by joe 
science someone please check my answers
i just want to know if my answeres are correct! A.The problem = the main issue or subject being in vestigated in the study B.a method=a procedure, process, or approach used to investigate the problem C.a finding=a proven result obtained as a part of the
asked by kayci 
Trigonometry
Usa a right triangle to write each expression as an algebraic expression. Assume the referenced angle is theta, and x is positive and in the domain of the given inverse trig. function. Label the triangle. 1. sec^sq(tan^1x) 2. sin(arccot x/(sqrt)1x^2)
asked by David M. 
science
When substances such as sugar and table salt are dissolved in water, the freezing points of the new solutions are lower than the freezing point of water. Also, the more material dissolved, the lower the freezing point. The boiling points of these
asked by kayci 
chemistry
what does it mean by in phase and out of phase for orbitals. Is in phase means that it's bonding and out of phase is antibonding?
asked by eng 
science
i just want to know if my answeres are correct! A.The problem = the main issue or subject being in vestigated in the study B.a method=a procedure, process, or approach used to investigate the problem C.a finding=a proven result obtained as a part of the
asked by kayci 
math
how do i find the area of a circle with a diameter of 2mi
asked by karley 
human growth and developmnet
Delinquent and predelinquent teenagers tend to be "stuck " in ....... of Kohlberg theory of moral development.In this stage,delinquent teenagers are deterred from misconduct only by the threat of punishment and fear of getting caught A)STAGE 4 B)STAGE 3
asked by vedrana 
spanish
does anyone know the story called " What ought a man to do on earth" It is from penn foster. Can I find it on the Internet if so where
asked by Kay 
chemistry
the reaction between CV+ and OH, is CV+ lewis acid and OH lewis base
asked by bme1 
science
The earth wobbles slightly on its axis. which of the following earth processes might best account for these changes in earth's rotation? 1)underground nuclear explosions 2)population increases 3)variations in rainfall and river flooding 4)motion of
asked by kayci 
math
you roll a fair number cube twice. what is the probability of rolling two 3's if the first roll is 5
asked by jane 
Chemistry
A steel cylinder contains 128 grams of oxygen (O2) at 25*C and a pressure of 1000 torr. at STP 1 mol of a gas occupies 22.4 L. What is the volume in liters of the oxygen gas in the cylinder?
asked by Dana 
chemistry
if the ration of water drops to EDTA is 6.7 for the known sample and 10 for the unknown sample what is the concentration of the unknown sample? (The concentration of the known sample is 315 ppm) a. 150mg/L b. 210mg/L c. 280mg?L d. 320mg/L
asked by alex 
Gr.11 BIOLOGY
Indicate whether you agree or disagree with the following statement: “Cola drinks do not qualify as food.” Explain you answer.
asked by NINI 
psych
Evaluations of a particular belief, person, object, or idea describe a person's : a. Attudes b. Motivation c. Predispositions d. Biases
asked by Ree 
chemistry
summerize the factors which affect the rate of this chemical reaction. Will these factors affect all chemical reaction? explain your answer using collision theory.
asked by Z.......... 
Physics
a pendulum has a bob of 0.20kg and is suspended by a string of negligible mass near the earth's surface. the pendulum is displaced from its equilibrium position by the angle of 8.0 degrees. it passes the equilibrium position 0.50 s after being released.
asked by secret 
Chemistry
A sample of an oxide of antimony (Sb) contained 25.0 g of antimony combined with 8.2 g of oxygen. The simplest formula for the oxide is?
asked by Chris 
trig
For the given equation, solve for all values of (theta) to the nearest tenth of a degree. 2secant(theta)+10=0
asked by Courtney 
science
A substance seems to completely fill a container, but more can be forced in. Is the substance a solid, liguid, gas or none of these????
asked by sue 
Chemistry
The element niobium has bcc packing with a bodycentered cubic unit cell. The volume of the unit cell is 3.59 x 1026 L. Calculate the density (g/cm3) of the element
asked by Anon 
Algebra Concept check
1. Anna has 12 bills in her wallet, some $5 and some $10. The total value of the bills is $100. How many of each bill does Anna have? 2. Tripling the greater of two consecutive even integers gives the same result as subtracting 10 from the lesser even
asked by Anonymous 
science
When substances such as sugar and table salt are dissolved in water, the freezing points of the new solutions are lower than the freezing point of water. Also, the more material dissolved, the lower the freezing point. The boiling points of these
asked by kayci 
Trig
Given 2secant^2 (theta) + 1 = 5 secant (theta), solve for (theta), to the nearest degree, in the interval 0 degrees is greater than or equal to (theta) which is less than 360 degrees
asked by Courtney 
chemistry
15.0 g of Potassium metal is dropped into 50.0 ml of a 1.50 mol/L solution of H2SO4. what is the mass of gas given off during the reaction?
asked by k 
statistics
A USU Today survey found that of the gun owners surveyed 55% favor stricter gun laws. The survey Involved 500 gun owners. Test the claim that a majority (more than 50%) of gun owners favor stricter gun laws. Use a .05 significance level.
asked by Lynn 
statistic
Let's assume there are 3 people in Room A and another 3 people in Room B. The ages of the people in Room A are 25, 25, and 25. The ages of the people in Room B are: 10, 25, and 40. The mean of the ages in both rooms is 25. Does that mean that both room
asked by carol 
Humanities
Sung dialogue in which the singer has accompaniment in the form of light chording is called?
asked by Kurt 
ChemistryDr. Bob
I posted this response under your answer but I thought I would repeat it here just in case you didn't look back at the other one. I really appreciate you helping. When you go to science geek, you have to type in Shockwave/Titration to get the experiment.
asked by Shelley 
physics
Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)
asked by gaveen 
Physics
Two clouds each have a charge of 1*10^7C. If these clouds are 8.2*10^11m apart, what is the magnitude of the electric force between them?
asked by brandon 
french
For this writing assignment, you are going to see words out of order and perhaps not in the correct form you will need for the sentence. Make a correct sentence using all elements that you are given. 1. être/monsieur/grand/mince/et 2. et/petit/être/la
asked by Greiye 
Literature (Antigone)
Creon had to make a decision about honoring the state or honoring the gods. What are the reasons for honoring the state and the reasons one should honor the gods.
asked by Keney 
Science
Create a limerick about the 3 parts of a plant.
asked by Danielle (7th grade) 
Chemistry
If an amount of heat q is applied to an object and its temperature changes by ÄT, the amount of heat that must be applied to change the temperature by 10ÄT is
asked by write2khin 
Finance
You are provided the following information on a company. The total market value is $40 million. The capital structure, shown here, is considered to be optimal. Accounting Value Market Value Bonds, $1000 par, 6% coupon, 6% YTM $10,000,000 $10,000,000
asked by Lakisah 
physics (electric charges)
Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)
asked by gaveen 
Ms. SueHope u had fun!
Welcome back Ms. Sue, I hope you had lot's of fun on your trip. :)
asked by Sara 
Chemistry
Calculate the [H3O+] when 1.65 grams of KOH are dissolved in 500.0 mL of solution
asked by Amrita 
trig
find, to the nearest degree, the solution set of 4 cos^2x1=0 in the intervak between )degrees and 360degrees.
asked by Courtney 
LAL!
what is the conjuction in this sentence is it correlative or coordinating Ryan is wearing a green shirt, for that is his favoite color
asked by Sara! 
Area in Polar Coordinates
Find the area it encloses. r = 5cos(θ)
asked by Mike 
chemistry
what is the ration of water drops to EDTA (ethylenediamene tetraacetic acid) if 3 drops of EDTA was needed to change the color of 20 drops of water with known hardness?? a. 0.15 b. 1.0 c. 4.0 d. 6.7 am I missing something huge here??
asked by alex 
math
cory drops a bouncing ball form a height of 50 ft and it rebounds to 90% of its previous height.find the total distance the ball will have travelled when it hits the ground for the fifth time
asked by Dennis 
math
the parameter of a rectangular placemat is 72 in. the length is 4 in. find the with and the length
asked by anna 
social studies
what is the name of the problem that occurs when an area needs more water than it has
asked by veronica 
physical
give a brief definition of the term physical education
asked by Anonymous 
SCIENCE/CHEM
Dr Bob Is it true that only TWO molecules of water are required to balance the equation for the reaction of HCL with Calcium Hydroxide.(calcium chloride is the other product....why??? Thanks andy
asked by Andy 
BIO. LIFE SCIENCE
IN GARDEN PEAS, THE ALLELE FOR TELLOW PEAS IS DOMINATE T OTHE ALLELE FOR GREEN PEAS. SUPPOSE YOU HAVE A PLANT THAT PRODEUCES YELLOW PEAS, BUT YOU DON'T KNOW WHETHER IT IS HOMOZYGOUS DOMINANT OR HETEROZYGOUS. WHAT EXPERIMENT COULD YOU DO TO FIND OUT?
asked by DREW 
Math/ Probability
Please Help!!! A pair of dice are rolled and the sum on their upturned faces is recorded. WHat is the probability that the sum showing is 8, given that one dice is showing a 5?
asked by lisa 
math
Suppose that an experiment has five separate mutually exclusive outcomes: A, B, C, D, and E. If the sample space for the experiment is a uniform sample space, what is p(a or e)
asked by joe 
Trigonometry
In this problem, you will describe in detail how we arrive at the accepted definition of the function y= Arccsc(x) a) Sketch the cosecant function over the interval (2pi, 2pi) i can do that b) This function is not one to one  please explain in detail the
asked by Jake 
chemistry
How do you calculate the energy change required to take 45g of water vapor at 126 degrees C to ice at 25degrees C?
asked by kim 
algebra
What would the first 15 counting numbers for base two and base four bases?
asked by Kristi 
algebra
help me solve the following using the elimination method: 6x+7y+2=0 and 7x6y26=0
asked by Gwendolyn 
human growth and developmnet
According to Carol Gilian's theory of how women define their identities,which one of the following response is most likely that of a woman asked to describe herself? A) I am a good wife,mother, and friend B)I am a hardworking and successful businesswoman
asked by vedrana 
Math
How many ways can 6 cars line up is it 6 X 6 is it 6 squared?
asked by Cooper 
reimbursement methodologies
Could someone check my answers to see if they are correct. Any feedback would be greatly appreciated.. Mrs. Hall was admitted to the hospital for the first time this year on September 15. On September 25, she was transferred to a skilled nursing facility
asked by Barb 
math
A diagonal is drawn in a 12in. square floor tile. Find the sine, cosine, and tangent of the angle formed by the diagonal and a side.
asked by kristi 
LAL! _
label if each is essential or nonessential are these correct and which sentence needs a comma. 1. mickey was named after the catcher mickey cochrane who made it into the hall of fame ( nonessential) 2. mantle's father who worked in the lead mines had
asked by Sara! 
spanish
what is the conjugation for I listened He use to take I slept
asked by kate 
Science
Antoine constant for saccharose
asked by Purwanti 
chemistry
what is the ratio of water drops to EDTA if 2 drops of EDTA was needed to change the color of 20 drops of water with unknown hardness? a. 10 b. 5 c. 0.1 d. 1.0
asked by alex 
Algebra
write the solution in interval notation x
asked by Anonymous 
math
What is the line of thought or sequence of thought for solving simple algebraic expressions? When I'm asked to solve the expression (5k)k^3....first I check with my list of exponent rules, and there are always a few that could be used to solve the
asked by Cliff 
Chesitry
Calculate the energy needed to melt 50.0 L of nitrogen (N2).
asked by Simon 
chemistry
in the lab there is a spill of 47.5mL of .500 mol/L Al(OH)3. How many grams of H2SO4 would be needed to neutralize the spill.
asked by k 
Sciencechanges to a cell's DNA
1.which section of the cell does cancer have an effect on? ~the genes controlling the cell division? 2.what charteristic of cancer cells lets cancer to extend to other spots of the body? ~Malignant tumours(metastasis)? 3.y r cancers that metastasize more
asked by Sara 
Algebra
Hi, I have had to factorise the equation x^2 + x  30 = 0, which I think I have worked the answer out as x =6, x =5? I now need to explain how I can use this answer to solve the equation 4x^2 +4x 120 =0 Any advice?
asked by Trevor 
math
The angle of elevation of a 15ft ladder is 70°. Find out how far the base of the ladder is from the wall.
asked by kristi 
LAL! _
adjective clause are these correct clause in capital letter 1. robinson soon proved his worth in the face of the jeers THAT SURROUNDED HIM. it modifies jeers 2. insults THAT CAME FROM FANS AND OPPOSING PLAYERS surely must have hurt. it modifies insults
asked by Sara! 
business law
"Drug use is information that is rightfully private and only in exceptional cases can an employer claim a right to know about such use." "Drug use is information that is rightfully private and only in exceptional cases can an employer claim a right to know
asked by Anonymous 
Physics
design an experiment to verify that T is derctly proportional to sqare toot of lenght of the pendulam. (pendulam investigation)
asked by secret 
7th grade
only three words in standard English begin with the letters ' dw' and they are all common words. name two of them.
asked by taylor 
physics (electric charges)
Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :)
asked by gaveen 
geometry
find the distance around this garden 4 ft 36 in 7 ft 7 yds
asked by norma 
algebra
A theater group made appearances in two cities. The hotel charges before tax in the second city were lower than in the first. The tax on the hotel bill was in the first city and in the second. After the trip, the total tax paid on accommodation expenses
asked by Anonymous 
HEALTH
TWO LETTER WORD FROM EDCIRLUSEEAM RELATING TO HEALTH CARE WEEK
asked by MEGAN 
Algebra 3
Solve: 7 less than or equal to 3x6 less than or equal to 1
asked by Anonymous 
science
How can computers predict the outcome of an election soon after the polls but before all the votes have been counted?
asked by Alex 
biology
which cell is catalase more present in ? plant or animal
asked by Mary 
chemistry
what is the ratio of water drops to EDTA if 2 drops of EDTA was needed to change the color of 20 drops of water with unknown hardness? a. 10 b. 5 c. 0.1 d. 1.0 please explain..
asked by alex 
chemistry
the reaction between CV+ and OH, which is lewis acid and lewis base? lewis acid: CV+ lewis base: OH is this correct
asked by bme1 
chemistry
Using data in table below and S °(CaSO4·H2O(s))= 194.0 J·mol1·K1, calculate ÄfS° for CaSO4·H2O(s) in J·mol1·K1.
asked by write2khin 
Chemistry
What is the concentration of 35.00 ml of KOH when it requires 115.00 ml of 0.75 M H2SO4 to neutralize it?
asked by hi! 
Math/ Probability
Two cards are drawn without replacement from an ordinary deck of 52 playing cards. What is the probability that both are spades if the first card drawn was a spade?
asked by lisa 
math 5th grade
how do simplify 7/2 long form
asked by austin 
english
I need a description of a major theme from The Robber Bridegroom by Eudora Welty, please please please. Preferably the theme with "Jamie Lockhart is the bandit of the woods. And the bandit of the woods is Jamie Lockhart" Thank you!!!
asked by Susana 
6th grade
What is the surface area of a rectangular prism with the numbers 15 26 9 12?
asked by Nicole 
math
graph each inequality y
asked by garret 
science
If solid copper sulfate is mixed with water, what is formed? A mixture, a solvent, a solution or both a mixture and a solution?
asked by sue 
Math
Please help, I need to write down the complete solution for the equation x^2 3x+0 So far I have added 3x to both sides giving x^2 =3x Now I am a little stuck! Any help would be very much appreciated
asked by Sam 
chemistry
Using data in table below and S °(CaSO4·H2O(s))= 194.0 J·mol1·K1, calculate ÄfS° for CaSO4·H2O(s) in J·mol1·K1. Compound S °, J·mol1·K1 C(s) 5.69 H2(g) 130.6 N2(g) 191.5 O2(g) 205.0 Na(s) 51.0 Cl2(g) 223.0 Ca(s) 154.8 S(s) 31.8 Anyone
asked by write2khin 
Chemistry
hrdrogen peroxide, H2O2, can be placed on open wounds as in an antiseptic. When you do this, bubbling occurs because 2H2O> 2H2O + O2 However, H2O2 only decomposes slowly in the bottle. Why does the wound accelerate its decompostion
asked by Z.......... 
math
A gutter cleaner wants to reach a gutter 40 ft above the ground. Find the length of the shortest ladder that can be used if the steepest angle at which it can be leaned against the house has measure 75°.
asked by crystal 
English
When I say, "I don't like milk." Should the person respond "me either" meaning, I don't like milk either? If they respond "me neither" isn't that a double negative? Thanks and I'm sorry. I'm sure I didn't type that question correctly.
asked by Mary 
12th grade
The Swiss franc is selling for $.7681 and the British pound is selling for $1.6581. The cross rate between the franc and the pound is? I figured out 2.16 but I have so much scribling over it I cant now refigure it out with our gettting it correct again.
asked by katrina 
stock market
If i invested 10,000 on 50 stocks that were 210.93 each, then the price of each went up to 217.00 each. How much did I earn?
asked by serena 
algebra
x^+2x^5x6/x+3= x+x6 is this right, please help with this question
asked by Ashley 
human growth and developmnet
Which one of the following adolescents would be most vulnerable to peer influence A)Gracie who is alone at home after school B)Thomas who is alone at home after school C)Tania,who hangs out with friends but calls her mom to let her know where she is
asked by vedrana 
Algebra 1
solve 14 less than or equal to 4x+2 and 4x+2
asked by Anonymous 
Math
Square Root of 5 plus 2 Square root of 2 over 4 minus the square root of 5 simplify
asked by Andrew 
algebra concept 2
2. Tripling the greater of two consecutive even integers gives the same result as subtracting 10 from the lesser even integer. What are the integers?
asked by Anonymous 
math
how do i find the area of a circle with a diameter of 2mi
asked by karley 
Math
If a single letter is drawn from the set (m,a,t,h,e,i,c,s) what is the probability that the letter drawn is a member of the set (m,a,t,h)? PLEASE HELP!!
asked by lisa 
LAL!
is always a linking verb
asked by Sara! 
LAL!
how do you know when you have to add a comma to a subordinate clause
asked by Sara! 
LAL!
IS THE VERB ALWAYS i always shower
asked by Sara! 
British Literature
Could you help: Compare and contrast Beowulf's speech with Sir Gawain's speech.
asked by Karen 
Algebra 2
Solve: 8
asked by Anonymous 
Algebra 4
Determine whether the ordered pair is a solution (8,3);8x+y,2
asked by Anonymous 
3rd grade math
Double my tens digit to get my ones digit. Double me and I am less than 50. Who am I?
asked by Pam & Hannah 
mathematics
1. area of a triangle having autitude=7 cm and bass= 4 cm is : ??? 2. supplimentry angle of 84: ?? 3. a boy is asked to run 12 times around a rectangular field measuring 35m by25m find the total distance boy ran. Thanks
asked by rebecca bhutto 
Algebra
solve for h. d=1.2 square root h
asked by Kim 
LAL!
are these complex sentence. if it is complex, and are the subordinate clause right are these right? the subordinate clause are in capital letters 1IN THE 1950S the giants were the national league team from new york.( COMPLEX) 2 fans argued all the time
asked by Sara! 
9th grade
find the slope of the line? (1/2, 2/3) and (3/2,14/3)
asked by marie 
Management
I am collecting ideas for the following question. Any help would be appreciated, thanks. Please give an example of good or bad management control based on your own experience.
asked by Chen 
Chemistry
For the lab we just did in class, one of the questions wants to know what the molarity of the NaOH is for each of the 'trials' of titration we did. The only problem with this is that the only number given to me was that of the amount we used! (11.29 mL for
asked by Alexa 
math's
Solve for this 5x^313x^2+4x9  7x^2+2x 11
asked by rima 
math
which of the following numbers has the greatest value (3.5), 12, the square root of 140, or the square root of 169
asked by tamia 
LAL! _
where would this relative pronun fit in this sentence allegedly, eight players took money to lose the world series. they were members of the chicago white sox. (WHO)
asked by Sara! 
LAL!
what kind of tense are these verbs 1. doesn't know 2. seems 3.wrote 4.had caught
asked by Sara! 
Science
What You Call that Thing that is on top of the subway station were the whole dust and garbage is located on top of the train (where it passes through?????
asked by Alisha 
MATHS !!!
convert 3.22 mm into cm please
asked by Andy 
math
how to slove (2y+5)(y3)
asked by james 
Algebra 1
slove (8w+2)(w+5)
asked by jorge 
algebra
ln(x5)+ln(x+4)=ln36
asked by Celest 
intermidate alegebra
ac Method 15t^ 17t4 ac=15*4=60 This the ac Method can you help me finished this problem
asked by JJ 
Chemistry
One of the questions on my worksheet asks: Litmus changes color between a pH of 5.5 and 8. This range is called.....BLANK. I don't really get what it wants me to put theresome help, please!
asked by Alexa 
childcare
the most fundamental principle behind learning is that children do what
asked by tammy 
biology
how important are test crosses to mordern day science
asked by imms 
history
what was lee harvey oswalds motive for killing jfk thanks
asked by looby lou 
trig
my last question was supposed to say 0 degrees instead of ) sorryyy
asked by Courtney 
Science
Why do different elements "glow" when excited?
asked by Noah 
Science
If you cut the root of a plant it would die. Why?
asked by Danielle (7th grade) 
literature
sentence with loveliness
asked by Anonymous 
math
answer for (y+4)(5y8)
asked by ed 
math
what is a fracture?
asked by alex