Friday
July 25, 2014

Posts by trista


Total # Posts: 38

Physics science 1206
You are coasting on your skateboard at 1.4 m/s and you decide to speed up. if you accelerate at 05 m/s2 (square) for 7.0s what is your final speed?

Please help me!!!!
2CH4 + 2NH3 +3O2 Arrow 2HCN + 6H2O CH4 is going to be used up making it the limited reagent 13.5 g CH4 10gNH3(1 mole NH3)(2 mole HCN) (14.01g NH3)(2 mole NH3) =.714 mole HCN Do the same for Ammonia and you get .499 mole HCN or .50

Pre Calculus
find an equation in standard form for the ellipse if the major axis endpoints are (-5,2) and (3,2); the minor axis length is 6.

math
Number 1 because the notation is less than ten and if u move the decimal back to the original number you would move decimal 5 places.

Algebra
(x^2+3)(2x+1) 2x^3+x^2+6x+3

Algebra II
I no the answer is 6.68. I can't remember how to get this.

Algebra II
John can clean an attic in 11 hours. DeShawn can clean the same attic in 17 hours. If they worked together how long would it take them? Please solve and show the work. Rounding the answer to the nearest hundredth.

math
2.43 * 10^13 is the correct answer

math
The answer is D

math
The answer is D

math
The answer is D

math
The answer is FALSE.

physics
A ball has an initial velocity of 22.0 m/s but is accelerating at a rate of -1.0 m/s squared. After it has traveled 25.0 meters what is its new velocity? The answer is 20.8 m/s squared. I don't no how my teacher got that answer. please help as soon as possible. Thank you

physics
Set a frictionless incline at various measured angles then determine the acceleration of a block by measuring the time it takes to increase from an initial speed to a final speed.If the angle is 20 and the initial speed is 0.68m/s and final speed is 2.43m/s and the time is 0.5...

algebra
It's a monomial and we are told to simplify and assume no denominator is equal to zero. its a -10m-1y0r means -10m to the neg. 1 power and y to the 0 power and r. I don't know how to write the powers. that equation is divided by -14m-7y-3r-4.which means -14m to the -7 ...

algebra
I sent a math equation to be solved because i am comfused on what to do with the whole numbers and I got one reply that is not correct. Here it is again. Simplify. Assume no denominator is equal to zero. -10m-1y0r _______________its a fraction set up. -14m-7y-3r-4

algebra
simplify. assume no denominator is eual to zero. -10m-1y0r(numerator) -14m-7y-3r-4(denominator)

english
i dont get why the saying... "War is hell." is too generalized and i to need to explain it.

english
We are reading the things they carried and i can not find an allusion in chapter 7 "HOw to Tell a True War Story". Can you please help

precal
i honestly dont know what to do or how to start anyways

precal
use the half angle formula to determine the exact values of sin, cos, and tan of the angle. pie/8 and pie/12

precal
rewrite the expression in terms to the first power of cos sin^2xcos^4x

precal
rewrite the expression in terms of the first power of cos sin^2xcos^2x

econ
How does a production possiblities curve illustrate how efficient an economy is?

econ
How is underutilization depicted on a production possibilities frontier?

english
I need help finding a good website that tells how dracula by bram stoker is a literary success. Also awards that Bram Stoker has recieved. I tried typing it in the search bar and i cant find anything. please help me!

chemistry
write a balanced formula equation for the reaction between sulfuric acid and calcium metal

alg 2
write an equation for the conic section Ellipse with vertices at (-2,2)and (4,2) and covertices at (1,1) and (1,3)

chemistry
For the reaction H2(g) +S(s)->H2S(s), Triangle H= -20.2 kJ and triangle S= 43.1 J/K. WHen will the reaction be spontaneous? I know that it has to be negative to be spontaneous but i dont exactly know how to answer this question.

chemistry
help me please i dont understand what to do... Calculate the molar entropy of vaporization for liquid hydrogen iodide at its boiling point -34.55 degrees celcius. HI(l) arrows pointing to both HI(g) Triangle H of vap= 19.76 kJ/mol

chemistry
is this true or false? i think its false because isnt it spontaneous if its positive When (triangle i think its called delta) H for a reaction is large and positive, the reaction is not expected to be spontaneous.

chemistry
is this right? A formation equation... it shows the change in enthalpy that comes from forming one mole of the compound in its standard state.

chemistry
k we did a lab and i dont understnad how to do this part... Determine the heat absorbed by the solution, which raises its temp.

chemistry
At 25 degrees celcius and 1.0 atm, 0.25 g of gas dissolves in 1.00 L of water. What mass of the gas dissolves in 1.00 L of water at 25 degrees celcius and 3.0 atm?

chemistry
The solubility of a gas is 0.34 g/L at STP. What is its solubility at a pressure of 0.80 atm and the same temperature?

Math
Given f(x) = x2 – 3x + 4, find f(0). If f(x) = x^2 – 3x + 4 then substitute 0 for x to get f(0).

Math
Given f(x) = –x3 + x2 – x – 5, find f(–3), f(0), and f(1) Hmmmm. Put in the value of x, and compute. Here is f(0) as an example: f(0)=-0^3 + 0^2 -0 -5 = -5

Geometry
1 How many faces does a square pyramid have? 2 How many edges does a square pyramid have? 3 How many vertices does a square pyramid have? answer? 8, 5, 10 Viualize one of the great pyramids of Egypt. It's base is a square and it has four sides. So the total number of faces...

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