Thursday
October 23, 2014

Posts by grace


Total # Posts: 378

Science
4
September 26, 2014

Maths
Find the 2 and 3 digit factors of 4396 using the numbers 1-9.
September 22, 2014

M.A.T.H
Aha,thank u
September 18, 2014

M.A.T.H
Wait,is it just me or did u like trick me or something????? why u add 5 anyways and 10????????? oh well....ill figure it out
September 18, 2014

M.A.T.H
Thank u me and my twin Gracie were having trouble thanks a lot
September 18, 2014

M.A.T.H
USE THE RULE TO WRITE THE FIRST 12 TERMS IS THE PATTERN. Rule: Add 10,subtract 5 First term: 11 WEAKNESS HERE
September 18, 2014

physics
In a certain particle, a current of 0.50 mA is carried by a 5.0MeV proton beam that has a radius of 1.5 mm. Find the density of protons in the beam.if the beam hits a target, how many protons hit the target in 1.0s.
September 11, 2014

Math
Two ways to write 67,000 ----place value
August 27, 2014

literature
Hi, I'm doing a poem for a literature book called Red Sky In the Morning by Elizabeth Laird. The theme that my teacher assigned to me is'Anna's love for Ben'. It can be through her thoughts, words, actions or what other characters say about her love towards her...
August 17, 2014

Biology
It's a chemical reaction.
July 23, 2014

SECONDARY ALGEBRA
f(x)=(120m^3)x
July 22, 2014

SECONDARY ALGEBRA
A rectangular field is to be fenced off with 120 m of fencing materials. the length of the field is x. express the area in square meters of the field as a function of x.
July 22, 2014

Distribution and warehousing
What are the risks of distribution of goods and materials
June 11, 2014

chemistry
Calculate a value for the solubility of (NH4)2C2O4H2O in g/100 cm3 at 298 K
May 21, 2014

math
A number from 20 to 30 is drawn at random. Posibility of it not a 23
May 13, 2014

math
how much lottery revenue has been allocated to education in nc
May 1, 2014

Math
HELP A Certain state's lottery LOTTO, is set up so that each player pays $1 per ticket and chooses six different numbers from 1 to 49. if the six numbers chosen match the six numbers drawn each Saturday evening, the player wins the top cash prize. the order in which the ...
April 30, 2014

math
the sum of an integer and the next greater integer is at least 27. find the lesser integer.
April 23, 2014

math
which figure must have both parallel and perpendicular sides. 1.parallelogram 2. rectangle 3. rhombus 4. right triangles
April 10, 2014

Chemistry
Write the balanced chemical equation for each of the following. (Use the lowest possible coefficients. Include states-of-matter at 1 atm and 25unknown_prefixC in your answer.) (b) the reaction of magnesium metal and hydrobromic acid
April 2, 2014

Chemistry
Write the balanced chemical equation for each of the following. (Use the lowest possible coefficients. Include states-of-matter at 1 atm and 25unknown_prefixC in your answer.) (a) the dissociation of solid magnesium hydroxide in water
April 2, 2014

Chemistry
Write a balanced chemical equation that represents the self-ionization of water. (Use the lowest possible coefficients. Include states-of-matter at 1 atm and 25°C in your answer.)
April 2, 2014

Chemistry
How many milliliters of 0.326 M HCl would be required to titrate 5.48 g KOH?
April 1, 2014

Chemistry
What are the molality and mole fraction of solute in a 32.3 percent by mass aqueous solution of methanol (CH3OH)? molality = ?m mole fraction =
March 13, 2014

chemistry
In the laboratory a student finds that it takes 20.7 Joules to increase the temperature of 11.0 grams of solid platinum from 20.5 to 35.8 degrees Celsius. What is the specific heat of platinum she has measured.
March 11, 2014

Chemistry
Possible Sources of error in a reaction or sodium bicarbonate and acetic acid. Also known as baking soda and vinegar.
February 25, 2014

Chemistry
When copper(II) oxide is heated in the presence of hydrogen gas, elemental copper and water are produced. What mass of copper can be obtained if 34.0 g copper(II) oxide is used?
February 24, 2014

Chemistry
In 1901, Thomas Edison invented the nickel-iron battery. The follwing reaction takes place in the battery. Fe(s) + 2 NiO(OH)(s) + 2 H2O(l) Fe(OH)2(s) + 2 Ni(OH)2(aq) How many mole of Fe(OH)2, is produced when 3.70 mol Fe and 6.95 mol NiO(OH) react?
February 24, 2014

chemistry
a 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 4.23 g of CO2 and 1.01 g of H2O as the only carbon and hydrogen containing products respectively. Another sample of the same compound, of mass 4.14 g, ...
February 15, 2014

math
In the basketball game, Sarah made three times as many 2-point shots as 3-point shots. She made 8 shots in all. How many 2-point shots did she make?
February 13, 2014

Math #rd grade
Thank you! It was worded so weird I didn't know what they wanted. : )
January 14, 2014

Math #rd grade
Bryan has 3 nickels, 3 dimes, and 2 quarters. What fraction of the coins is either a dime or a quarter? There is a space for only 1 fraction answer.
January 14, 2014

Spelling
What is the antonym of brandishing? a) furbishing b) concealing c) defacing d) galvanizing
January 8, 2014

us history
How did immigrants regard public education? a. as an aid to assimilation b. as a threat to cultural heritage c. as a path to advancement d. all of the above
November 25, 2013

English
I have the sentence: Kyle seems calm despite his situation. Kyle is the subject, seems is the being verb, calm is a subject complement adjective that describes Kyle. My question is, is "...despite his situation" an adverb phrase? Is it describing calm or seems? Thanks,
October 25, 2013

math
In a class of 40 students, 27 like math and 25 like Filipino. At most how many students do not like at least one of these subjects?
October 22, 2013

chemistry
a tuning fork produces a sound of musical note middle C. It moves back and forth 256 time each second. What is the frequency of the tuning fork?
October 21, 2013

grammar
can you explain the predicate and complete predicate in a sentence
October 3, 2013

Geography
Why do the trees drop their leaves in the fall?
October 2, 2013

Geometry
The peremiter of triangly rst is 40 what is the perimeter of triange xyz
September 8, 2013

calculus
After solving with A=(-1,2) x^2+2x^2+x+1 got 119/12a pls where did i get it wrong. And with -[(-55)] x^2-25dx i got -50 pls am i correct
September 7, 2013

calculus
find the area enclosed between the x-axis and the curve, if y=x^2-25 for (-5) is less than or equal to x less than or equal to 5
September 6, 2013

calculus
find the area enclosed between the x-axis and the curve, if y=x^3 and the straight line y=x
September 6, 2013

calculus
find the area enclosed between the x-axis and the curve, if y=x^3+2x^2+x+1 between x=-1 and x=2
September 6, 2013

calculus
Determine l= 2e^xdx, given that l=50.2, when x=3
September 6, 2013

calculus
int e^5xsin3xdx =
September 6, 2013

calculus
int dx/3sinx+4cosx dx =
September 6, 2013

calculus
int x^2/(x-2)(x^2+1)dx
September 6, 2013

physics
A car is traveling at 95km/hr. the driver steps on the brakes and the car comes to a stop in 60m. What is the car's deceleration?
September 5, 2013

geometry
Given that r1=6i-8j+2k,r2=4i+5j+7k,r3=-2i+j+6k is a vector. Find r1r2,r2r3,r3r1(a)30,21,-8(b)26,23,8(c)24,19,-7(d)19,27,7
August 30, 2013

geometry
if U=i+3j-2k and V=4i-2j-4k are vectors find U.V, 3U+V& (2U+V).(U-2V) (a)6,10,4(b)4143(c)11,4,5(d)5,11,6
August 30, 2013

physics
Two charges Q 1 =500/mu(C) and Q 2 =100/mu(C) are located on the XY plane at the positions r1=3/vec(j)m and r2=4/vec(i)m. Find the force exerted on the Q2(a)14.4/vec(i)+10.8/vec(j)(b)14.4/vec(i)-10.8/vec(j)N(c)10.8/vec(i)-14.4/vec(j)N(d)10.8/vec(i)+14.4/vec(j)N
August 28, 2013

physics
Two large horizontal metal plates are separated by 4mm. The lower plate is at a potential of (-)6v.What potential should be applied to the upper plate to create field strength of 4000v/m upwards in the space between the plates?(a)(+)22(b)(+)10(c)(-)10(d)(-)22
August 28, 2013

Math
nn jhb
August 20, 2013

Math.....
16
July 16, 2013

Math
tom had 18 comic books , while Diane and Helen had none. Tom gave 1/3 of the comic books to Diane who passed 1/3 of these books along to Helen. If Tom then gave Helen 1/3 of the books he had left, how many comic books did Helen receive from Tom and Diane
July 3, 2013

Math
An airplane traveled a distance d in t hours, where r>1, and arrived one hour late. The airplane would have arrived on time if it had traveled at what rate per hour? a. t-1 b. d/t-1 c. d/t+1 d. d/t-1 e. d/t+1
July 2, 2013

Math
Each plant of a certain variety yields 50 seeds in the early fall and then dies. Only 40 percent of these seeds produce plants the following summer and the remainder never produce plants. At this rate, a single plant yielding seeds in 1986 will produce how many plants as ...
July 1, 2013

Language barriers
Females are passive
June 28, 2013

Ganguage barriers
If a child displays discriminatory behavior in the classroom, one should
June 27, 2013

Language and other barriers
An example of an exceptional child is one who
June 27, 2013

Technology
Non system disc means
June 17, 2013

Technology
If you want to teach whole classes how to use computers, where is the best place to locate the computers?
June 17, 2013

math
At a point on the ground 80ft from the base of a tree,the distance to the top of the tree is 11ft more than 2 times the height of the tree. find the height.
June 12, 2013

Physics
What happens to the momentum of the truck if sand leaks at a constant rate through a hole in the truck bed while the truck maintains a constant velocity?
May 26, 2013

life orientation
6 ways in which earthquake can impact negatively on one's health
May 14, 2013

math
0.21 x 63 = 13.23
May 9, 2013

Math
A lighthouse is east of a Coast Guard patrol boat. The Coast Guard station is 20 km north of the lighthouse. The radar officer aboard the boat measures the angle between the lighthouse and the station to be 23°. How far is the boat from the station?
May 8, 2013

Chemistry
When I solve for H^+ I put 1.7 x10^-3 x 0.26. I got 4.42 x 10^-4. My pH is 3.35. Is that right?
April 16, 2013

Chemistry
Substance X (MW=356gm) is a weak acid. Its Ka is 1.7x10^-3. Calculate pH of725ml of the following solutions: a)Containing 0.187 mol of substance x b)containing 127gm of Substance x I have been trying to figure this problem out for hours now and do not get it. Please help me ...
April 16, 2013

Chemistry
Does that mean that I do not need to do an ICE table but just use the HH equation?
April 16, 2013

Chemistry
Calculate the pH of the following buffer solution that resulted from 125ml of 0.1M NH3 with 250ml 0.1 M NH4Cl ( for NH3, Kb= 1.76x10^-5)
April 16, 2013

Chemistry
Calculate the pH of the following buffer solution that resulted from 125ml of 0.1M NH3 with 250ml 0.1 M NH4Cl ( for NH3, Kb= 1.76x10^-5)
April 16, 2013

Chemistry
Three metals P,Q and R form three ionic solids with three nonmetals X,Y, ands Z respectively as follows P2X, QY2, and RZ3. If their molar solubilities are the same, how are their Ksp values related? Please not only explain but write the respective dissociation.
April 16, 2013

algebra 2 (permutations & combinations)
from a standard deck of 52 cards, how many different five-card hands can be drawn?
April 10, 2013

science
tundra
April 4, 2013

Math
What property is this? 4(7+9)=(4x7)+(4x9)
April 2, 2013

Math
One half of 9.76
April 2, 2013

Math
The sunglasses that Ramon wants to buy are 50% off the original price of 85$ .How much did he have to pay?
April 2, 2013

Math
What is a attribute?
April 2, 2013

Chemistry
When 50.0ml of 1.00M HCl is titrated with 1.00M NaOH, the pH increases. calculate the difference in pH of the system when you add 49.99ml NaOH and 50.01ml of NaOH. Please work out detailed steps.
March 29, 2013

Chemistry
You have two buffer solutions 1) weak acid and its conjugate base 2)weak base and its conjugate acid. Write explicitly ( considering generic formula for acid and base) the equations of neutralization when you: a) add strong acid and strong base 1) b) add strong acid or strong ...
March 29, 2013

Math
6 quarters, 4 dimes, 3 nickels, 10 pennies. what is the probability you will get at least one of each coin in change of 1 dollar
March 26, 2013

chemistry
what is the total heat lost if you have 8 grams of copper and the temperature changed from 43°C to 36°C
March 24, 2013

Statistics
A national caterer determined that 87% of the people who sampled their food said that it was delicious. A random sample of 144 people is obtained from a population of 5000. The 144 people are asked to sample the caterer's food. If sample proportion, P^, is the sample ...
March 22, 2013

NJHS (essay)
hi, i'm currently applying for the national junior honor society, and i'm working on my essay. any ideas what i should include??? ps. i have no leadership experience and the section is blank! D:
March 20, 2013

Statistics
Suppose a basketball player is an excellent free throw shooter and makes 90% of his free throws (i.e., he has a 90% chance of making a single free throw). Assume that free throw shots are independent of one another. Suppose this player gets to shoot three free throws. Find the...
March 17, 2013

Basic Math Venn Diagram
Hi! Having a lot of trouble with this one problem. The venn diagram problem is n(U)-n(B). I realize I did not post the venn diagram, I just need to know how to solve that type of problem using a venn diagram! Help would be greatly appreciated. : ) Thank you so much!! God ...
March 7, 2013

Math
Thx that really helped😄😃😜😝👍👍❕👏🎓🆗🆕🔝🆒 freind bump🆙
March 7, 2013

Math
I don't know what 4r=96 means. Also I don't know what 51=3n means!😰😁😱😨📝HELP! It's due tomorrow
March 7, 2013

Physics
A uniform ladder of 5.0 m long and 12 kg is leaning against the wall (contact with the wall = point b, contact with the floor = point a). The height from the ground to point b is 4m . The wall is frictionless but the floor is not. A painter of 55 kg climbs 75% of the way up ...
February 24, 2013

MATH
if 5 times a certain integer ìs subtracted from twice the square of the integer the result is 63. find the integer
February 8, 2013

Algebra 1
In 1991, the federal minimum wage rate was $4.25 per hour. In 1997, it was increased to $5.15. Find the annual rate of change in the federal minimum wage rate from 1991 to 1997.
February 7, 2013

Macroeconomics
If the economy is at point C what is the cost of one more automobile? One more forklift?
January 31, 2013

chemistry
a sample of sulphuric acid is 95.7% by mass and has a density of 1.84g/cubic cm.calculate the mass of pure H2SO4 in a 2.00L bottle and volume of acid that contain 200g of pure H2SO4.
January 26, 2013

Environmental Biology
Identify two different types of businesses or corporations (be as specific as possible) that receive subsidies, through which it could be argued that environmental damage is a result. Briefly describe the environmental damage for each.
January 19, 2013

solid mensuration
what is the area of a section bounded by a closed elliptical figure in which the major and minor segments measure 60 cm and 45 cm
January 11, 2013

Physics...Help!!!
given that Earth's surface gravitaitional field strength has a magnitude of 9.80N/kg, determine the distance(as a multiple of Earth's radius re) above the Earth's surface at which the magnitude of the field strength is 3.20N/kg.
December 20, 2012

Economics
If businesses believe consumption will increase six months from now, everything else held constant, and they begin to increase investment, what do you predict will happen to aggregate demand?
December 10, 2012

Chemistry
Devise a test to distinguish between Cu2+ and Co2+.
November 19, 2012

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