Wednesday
April 16, 2014

Posts by star


Total # Posts: 134

math
2 ones, 48 tenths and 5 hundreds =

Math
what is 996587*968547*6584/85

Chemistry
Element L has an average atomic mass of 54.2488 amu and is composed of two isotopes. The first has a mass of 55.2036 amu and makes up 41.030% of a standard sample. What is the mass of the second isotope? I under how to get average atomic mass but not sure how to get the second...

math x
0.051367

grammar
Phiilidelphia is located in Pennsylvania. It is located on the Delaware River. (combine the sentences with a phrase)

Chemistry
If Chelcy and Allyson reacted 2.55 grams of Mg with excess hydrochloric acid (HCl), how many grams of MgCl2 will they theoretically produce? Mg(s) + HCl (aq) → H2 (g) + MgCl2 (aq) ?g MgCl2

Chemistry
How many moles of P4O10 can be produced with 8.084e-001 moles of the limiting reagent?

geometry
A regular pentagonal pyramid has a side length of 4 mm, an apothem that measures 3 mm, and a height of 4.1 mm. What is the volume of the pyramid?

us history
I need your view on "Do you think the development of the New Word would've still taken place if it wasn't for Columbus' selfish motives?"

chemistry
the volume of a gas at 273 degree cels and 2 atm pressure is 5L. What would be its volume at 0 degree celsius and 1 atm pressure ?

physics
two forces of 10N and 7N respectively are applied simultaneously to an object . The minimum value of their resultant is, in newtons?

physics
of the following the largest quantity is a] 0.047 cm b] 47x10-4 cm c] 4.7x 10-4 cm d] 0.00047x10^2 cm e] 0.000047x10^6 cm

physics
its given in question that keep in mind the topis mass defect and then i got the options a) 4g b) less thn 4g c)more thn 4g d)8g

physics
if the mass of two particals is 2 gms each then when they combine to form a nucleus hw much will be the mass of nucleus ?

chemistry
plz help me

chemistry
i dnt understand which is number of moles i knw 60 is urea bt hw to calculate i dnot knw

chemistry
what is the molarity of a solution containing 1 mole of urea per litre of the solution ? Hw to solve this

ALGEBRA
Adams' plan. 2 3 3 2

physics
a man 60 kg skating with a speed of 10 m/s collides with 40 kg skater at rest and they cling to eachother. Find the loss in kinetic energy?

chemistry
plzzzzz ans ma question

chemistry
an engine operating between 100 degree celsius and 0 degree celsius takes 453.6 k cal of heat. The usefull work done by it is ? plz teach me the way of calculating it

chemistry
how will know the hydroxide concentration for a solution with a pH of 10 at 25 degree celsius?

chemistry
how we know that 1 mol of cabr2 is 199.89 ?

chemistry
plz ans ma question i am in a big trouble with chemistry

chemistry
how to calculate molar concentration of a 500 millimeter solution that contains 20 gram of CaBr2 ?

physics
if a period is doubled, than the length of the pendulum should be ? A) increased by root 2 b) quartered c) quadrupled d) halved e) doubled

biology
the gene for eye colour is located on ? a) x chromosome b) y chromosome c) both a and b d) non of them

biology
which of the following cannot cause change in gene pool a) mutation b) migration c) meiosis d) genetic drift

chemistry
an ideal gas in a closed inflexible container has a pressure of 6 atm and a temperature of 27 degree celsius . What will be the new pressure of the gas of temperature is decreased to -73 degree celsius? a) 2 atm b) 3 atm c) 4atm d) 8atm e) 9atm plz teach me the method also

chemistry
m getting k as 0.03465 m doin k =0.693/40x2 so m getting k as 0.03465

chemistry
m doin as k=0.693/40 and m just gettin an different ans

chemistry
stil i didnt get the ryt ans hw to calculate t1/2. Wats the ans ?

chemistry
a radioactive material is undergoin nuclear decay. After 40 minutes, 25% of the sample remains. What is the half life of the sample? Pls say the formula how to calculate it a)10 mins b) 20 mins c) 40 mins d)80 mins e) 160 mins

chemistry
6/27 = p1/-73 ths are the values which m getting frm question bt stil the last ans is like 438 which is obviously wrong

chemistry
m not getting the right answer am getting a different ans

chemistry
an ideal gas in a closed inflexible container has a pressure of 6 atm and a temperature of 27 degree celsius . What will be the new pressure of the gas of temperature is decreased to -73 degree celsius? a) 2 atm b) 3 atm c) 4atm d) 8atm e) 9atm plz teach me the method also

physics
what u mean it wil be the same as wat ?

physics
a 20 ohm and 60 ohm resistors are connected in series to a DC generator. The voltage across the 20 resistor is 80 volts. The current through the 60 ohm resistor? A) 1.0A B) 5.0 A C) is about 1.3 A D)4.0 A E) cannot be calculated

physics
an object is placed 10 cm from a concave spherical mirror whose radius of curvature is 12 cm. What is the distance of image a) 5cm b) 10 cm c)15cm d)20cm e)24cm

physics
i dno thats y m posting it here

physics
an electron moves with constant speed at right angles to a uniform magnetic flux, if the flux density were doubled, the force on the electron would be A) unaffected B) reduced to one month C) halved D) doubled E) quadrupled

physics
if a stone at the end of a string is whirled in a circle, the inward pull on the stone A) is known as the centrifugal force B) is inversely proportional to the speed of the object C) is inversely proportional to the square of the speed D) is proportional to the speed E) is pro...

algebra 2
x^2-4x-32=0 solve by factoring

Math
1. A colony of bacteria grows exponentially according to the function where N is measured in grams and t is measured in days. N(t)=100e^0.045t You may use graphical method or algebraic method. Please show work if algebraic or show the graph if graphical method - round to 2 dec...

chemistry
What is the concentration of NaOH? using this solution (0.04756 M (i think its stand for Molarity) H2SO4) what is the concentration of NaOH in 10.00 ml of a solution, titrate to an end point using 24.22 ml of acid? formula that was given is (H2SO4 + 2NaOH --> Na2SO4 (aq) + ...

Science
Helium gas is added to a ballon already partially filled with helium gas the balloon inflated because the

Science
Which of the following statements describes the most serious , long term , environmental damage produced by oil spills in the ocean ?

American History
In the election of 1912, Teddy Roosevelt's Bull Moose Party platform was built around what he called the?

science
a 600 kg toy car moving at 3 m/s collides and hooks up with a 900 kg toy car at restand they move off together. What is their final velocity?

Calculus
FIND THE LIMIT As x approaches 0: tan 5 x/sin 25 x

Math
solve for x, where x is a real number. (x^2)+3x-4=14 Please show me the steps im missing one and i cant figure out what

Math
when a problem asks for domain and range which is which?

Calc AB
(x+y)^3 expand

Calc AB
(1/(x+h))-(1/x) ..simplify

fractions
line up together and shade 2 parts in for 2/5 and for 6/15 shade in 6 parts for 6/15

Pronoun Pratice
Ok I see know. Thank you so much for your time!

Pronoun Pratice
Is the sentence "that (all) credit cards are evil" correct? is it the correct use of a pronoun?

Pronoun Pratice
I have written a paragraph about credit cards using at least five different pronouns. Could you please look over it and let me know if you see any errors, if my pronoun use is correct and if the sentences are complete. If you have any input about how a sentence can be improved...

English
Thank you both! I appreciate your time

English
Is this sentence correct or am I missing a comma? Is there a way to rewrite it so that it sounds better? I have learned how to properly write a complete sentence and to avoid run ons and fragments.

Grammar
Great! Thanks again for your time!

Grammar
Is Having an education plays a big part in successful financial planning. Correct? Does Having an education plays a big part in successfully planning for the future financially sound better?

Grammar
The verbs in my sentences are 1. were talking 2. plays 3. are investing 4. will have helped 5. will be planning

Grammar
Five sentences about the role of education in successful financial planning, using different verb tense in each sentence with the verb in bold. Can you please tell me if the following sentences are correct? My husband and I were talking about our financial goals. (Past Progres...

physics varsity
tarzan(85 kg) tries to swing across a river hanging from a monkey rope(10m)long as he reaches bottom of his swing he os travrlling at 8m/s but he doesn't realise the rope has a breaking strength of 1000N.does he make it safely across the river

Chemistry
How many liters of air (78 percent N2, 22 percent O2 by volume) at 20 degrees Celsius and 1.00 atm are needed for the complete combustion of 1.0 L of octane, C8H18, a typical gasoline component that has a density of 0.70 g/mL?

CHEM
I had the Br on the second due to the 2-bromo, and the ring on the 4th, but it was marked wrong so then I thought perhaps it should have been flipped right to left - which reading left to right would have put the Br on the 4th...I still dont understand though. Im sorry. =/

CHEM
Trying to figure out how to draw the structure 2-bromo-4-phenylpentane I thought it was a five carbon strong with the ring on the second C and a Br on the 4th - but thats not correct (or not completely correct) What am I doing wrong?

CHEM
omg that was it! I was missing the extra H on the Cl points. Thank you SO much! I am also trying to draw another one..but I will post it into a seperate question in case others need to see that as well. Thanks again!!!

CHEM
draw the structural formula for 1,3,5-trichlorocyclohexane

grammar
what is the role of education in successful financial planning?

physics
An airplane is flying with a velocity of 248 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.8 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle?

algebra 1
what kind of shoes does a frog wear

10th grade
2x-y=-5 -2x-5y=11

Math
Use the echelon method to solve the following system. x/5+3y =31 2x-y/5=8

Math
Solve each equation. Round decimal answers to the nearest thousandth. 5(0.10)^x = 4(0.12)^x

Physics
Torque= (F)sinTheta(r) Given: F=55N d= 74cm (converted to M=0.74M) Theta=90degrees. Since, Perpendicular is equal to 90 degrees, sin90 = 1. T=55N(1)(0.74m) Tperpendicular= 41N. 45degrees. T=55(sin45)0.74 T=29N. Hope this will help :)

Assembly Language
Hello, i am new at assembly language and i just got started with this stuff. I have this assignment which doesn't make any sense to me. Can someone please help? I am using Kip Irvine's, Assembly Language for x86 Processors, 6th edition. These are the instructions to as...

computer science (Assembly language)
Hello, i am new at assembly language and i just got started with this stuff. I have this assignment which doesn't make any sense to me. Can someone please help? I am using Kip Irvine's, Assembly Language for x86 Processors, 6th edition. These are the instructions to a...

Health
What role can a bystander play in reducing incidents of bullying?

academic
what is the antecendent and pronoun in the sentence. You have probaly read or heard aesop fables.

finance
Please help with finance question. Thanks What judgment would you make about diversification during an economic recession? An economic expansion?

psychology
First explain the difference between sensation and perception. Next define the just noticeable difference and sensory adaptation. Finally give examples of how both the just noticeable difference and adaption play a role in both sensation and perception

sciice
Why do you think another mistake doesn't just correct the mutation in an abnormal CF gene? What do you think the chances of this occuring would be? Compare this to the chance of some other event happening

biology;zoology
What do you think the embryological steps we see in the early development of the invertebrates tells us about evolutionary history? How did those steps evolve? Please use specific examples and be prepared to defend your answer.

English
we have to write and present a drama script about 'marginalization' for example homeless people are left out of the society. those with disabilities and those young people under 25 who care for their relatives. they are all positioned outside of the great circle of soc...

Art
i have to do a still life about "Music", but i have no idea how to do it. i just know that i'm definitely going to add a guitar but what else? please give some ideas...

English
can anyone come up with an idea for a short narrative for the poem "In the tube" by Richard Aldington. it has to fill a gap in the poem, in other words it has to say what it hasn't in the poem. the focus is on 'marginalization' i have to write an epistola...

algebra
Translate the problem into a pair of linear equations in two variables. Solve the equations using either elimination or substitution. State your answer for both variables. In a basketball game, Will scored 26 points, consisting only of three-point shots and two-point shots. He...

math
Which of the following is a subset of set A? A: {children between the ages of 3 and 7} a.children over 7 b.children3 years old c.children of all ages d.children under 3

math
27.2(m)/t Force m time 11000 8 sec 9520 10sec 12000 7 sec 11500 9sec

math
27.2(m)/t Force 11000

math
b.Use your new formula to find the mass of the automobile in kg for each value of force and time given in the table below. Round your answer to the nearest whole number

history -history teacher if poss
for my history homework i need to answer this question Explain why the Peace Settlement was changed in the years 1920-1928. ive looked but can`t find anything its due in tomorrow and i can`t find anything. please can someone help.

Ms Sue-re
just to say a BIG thankyou to you i was abit confused but what you found was a huge help and helped to clear it up.you are a star! thanks again

relgious education
do muslims get baptised/christened. ive looked on some websites on one it says they do and on another it says they donot believe in it. im a bit confused. thanks

5th grade
what is an answer and to explain my answer for 569 divided by 25

science
make inferences to answer the foeoling question: At which pencil point was oxygen produced? can u help me plz?

home work
what's a sentence for hasten

sentences
what's a sentence for column

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