Monday

April 21, 2014

April 21, 2014

Total # Posts: 219

**Chemistry: gases, liquids, solids problem**

4 NH4NO3 -> 8 H2O + 4 N2 + 2 O2 What will be the total volume in liters of gas produced at 720. mm Hg and 570.0°C when 2.50 g of NH4NO3 completely decomposes? Use molar masses with at least as many significant figures as the data given.

**Chemistry**

thanks Liliana! and everyone else.

**science**

explain why a single5 500 kg block of granite weathers much more slowly than 100 chunks of granite weighing 5 kg each.

**chemistry**

A 3.0% by mass solution of H2O2 contains 3.0 g of H2O2 per 100 g of solution. (3.0 g H2O2 / 100 g solution) x (1.01 g solution / 1 mL solution) x (1000 mL / L) = 30.3 g H2O2 / L (30.3 g H2O2 / L) x (1 mole H2O2 / 34.01 g H2O2) = 0.8909 moles H2O2 / L = 0.89 M to 2 sig figs

**math**

_______7m______ |\ / | | \ 2.8m 2.8m / | | \ / | | n \ / | | / \ n | | / \ | | / \ | / 2.8m 2.8m \ | ____________ \ | Find the area of each shaded region( n not shaded). Assume that all angles that appear to be right angles are right angles.

**Math**

This irregular shape has 2m,2m,2m, 3m, 4m, 7m _2m_ _2m_ | |2m__3m_| | | | |________| 4 m 7 m how would I find the area if you can't tell how it is so you can't answer it I understand

**Math**

A= 10,560 ft x 2 mi

**Math**

Find the measures of two supplementary angles if the difference of their measures is 56 degrees I know supplementary angles are the sum of the measure if two angles is 180 degrees but then what is the question asking?

**math**

A= 5 m x 200 cm A= 500 cm x 200 cm A= 100000 cm2?

**math**

How do areas of two parallelgrams compare when the dimensions of one are three times the demensions of the other?

**math **

A= 100 cm x 1 m A= 100 cm x 100 cm A=10000 cm2?

**math 7th **

similar figuers have the same shap but not the nesessarily the same size. They have corresponding angles and corresponding sides. What exactly do you need help with?

**math**

but I don't get how to tell if it is m or cm

**math**

A= 0.5 m x 20 cm

**math**

the answer is 1m2

**math**

A square with an top as 100cm and a side with 1 m A= b x h A= 100 x1 A= 100 cm2 or m2?

**Weather & Climate (science)**

Why is it that an Aneriod Barometer Can be used to measure elevation as well as air pressure?

**math**

How are sales tax and discounts figured? specifically socks @ $2.99 and 5.5% sales tax

**biology**

when the peple are having s*x

**Weather & Climate (science)**

okayy and there are alot more questionss

**Weather & Climate (science)**

Which ones/one is true? a.)Altitude affects density b.)Altituce is the dictance above sea level c.)Altitude is also call elevation

**Weather & Climate (science)**

Thankss

**Weather & Climate (science)**

1.A(an)_________________ barometer Has a closed space surrounded by metal 2.A(an)_________________ barometer Has a glass tube that is open at the bottom end. ive been tryin thesse for ever! when awncering put like for example ur goi no awncer #1 put 1. then the awncerr

**science**

either e or c

**Weather & Climate (science)**

i just added them to the current questions

**Weather & Climate (science)**

Thankss. Can you help me with some more problemss?

**Weather & Climate (science)**

1. an insturment used to measure air pressure is a(an)___________________________________.

**Algebra/Word problem**

320! i thinkk

**7th grade**

what he said

**spanish**

Correctt

**6th grade math**

But how does it awnser in part related to factors of 10

**math**

i need some serious help with limits in pre-calc. here are a few questions that i really do not understand. 1. Evaluate: lim (3x^3-2x^2+5) x--> -1 2. Evaluate: lim [ln(4x+1) x-->2 3. Evaluate: lim[cos(pi x/3)] x-->2 4. Evaluate: lim x^2+x-6/x^2-9 x--> -3 5. Evaluat...

**statistics**

Give an estimate for each expression in Exercises, Then state whether you believe that the exact answer is greater than or less than the estimate. Explain how you decided. Use a calculator to check the accuracy of your estimate. 978 X 66

**alegbra**

b

**computers**

Can you find both multitasking system and a multiprocessing system operating system?

**algebra**

Thank you for the information.

**algebra**

I have one more step in my question. I have to Find the value of 10^-2.4 by putting this value in a calculator. I do not have a calculator to do this, can anyone help me out?

**language**

Because a compound is when two words are joined together to make one word. Black alone ia a word. Is ness?

**language**

no examples eye + ball= eyeball grand + mother = grandmother

**language**

A compound word is made when two words are joined to form a new word

**language**

Homonyms are words that sound like one another but have different meanings. B

**Algebra- IS this right?**

Evaluate The Logarithmic Equation For 3 Values Of X Greater Than -1 3 Between -2&-1 &x=-1 Y = Ln(x + 2) Y = Ln(x + 2) ,x=3,y=1.6,1.6>-1. X=-1,y=0.

**Algebra- IS this right**

Evaluate The Exponential Equation For 3 Positive, 3 Neg. Values Of X &x=0 Y=3^-x" Y=3^-x,x=3y=1/27, x=-3,y=27,x=0,y=1.

**Algebra**

I need to rewrite the following as an equivalent logarithmic yt = x I wrote logy=logt=logx. My teacher said that was wrong. Can someone guide me on the right answer?

**Algebra**

Given log b 3 = 0.8397 and log b 7 = 1.4873. Find log b 3b Is the right answer 0.8397

**algebra**

My choices for this question are a x = log8 over log 3 b x log = log 8 c x=log 3 over log 8 d x= ln8 over ln3

**algebra**

My choices for this question are a x = log8 over log 3 b x log = log 8 c x=log 3 over log 8 d x= ln8 over ln3

**algebra**

Can you please tell me me if the expression or equation that is equivant to 8^x=3 would be x log 3 = log 8?

**algebra**

Rewrite the following as an equivalent logarithmic equation.Do not solve. y^t = x answer logy+logt=logx-is this right also Express as an equivalent expression that is a sum of logt (3ab) the t is at the bottom of the g answer log3+loga+logb logarithms.

**Is this right**

I need to express as an equivalent expression that is a sum of logarithms. logt 13ab2 is this right (log+13t+loga+log+b+log+2)

**Is this algebra question right**

Do you rewrite the following as an equivalent logarithmic equation yt=x as E^2-2=7.3891?

**Algebra**

what would be the approximation to the nearest ten-thousandth log 8900 over log 110?

**algebra**

Not sure where to go next. I need to solve this quadratic equation 7x^2-5=0. This is what I have so far, not sure where/what to do next x=2/7 x=sqrt2/7 or x=-sqrt2/7* =+/-sqrt2/7 +/-sqrt14/7 not even sure if this is right.

**algebra-Am I right so far**

Use the quadratic formula to determine the x-intercepts (if any)f(x)=2x^2=2 am I right so far? f(x)ax^2+bx+c y=ax^2+bx+c y=2x^2+2 y=0=>2x^2+2=0 =>2x^2+2=0 ax^2=2,bx=2,c=0 x=b=sqrtb^2+4ac over 2a x=(2)+sqrt(2)^24(2)(0)over2(2) x=sqrt4+4over 2

**algebra**

Is the line of symmetry in f(x)= -(x-2)^2+2 x=2

**algebra**

Would the vertex of f(x)= -(x+3)^2+4 be (-4,3)?

**algebra**

Thank you

**algebra**

Use the formula 4.9t^2 +vot=s, where t is the time in seconds, vo is the initial velocity, and s is the distance in meters. Approximately how far will an object fall in 4 seonds, if it is thrown downward at an initial velocity of 20 meters per second (vo) from a helicopter? Is...

**algebra**

I am totally lost on how to solve g(x)=2x^2+3x-1 to find the y and x-intercepts. This is what I have so far, but I don't know if I am on the right track. And if so what would be next? g(x)=2x^2+3x-1 =2x^2+3x -1 =(2x^2+3+6) +3-1

**Math**

solve using the quadratic formula. 3x^2/4 - 1x/4 - 1/2 = 0

**Algebra**

How would I write a quadratic equation having the given numbers as solutions 4i, -4i

**Algebra**

Can someone help me with this question? Use the discriminant to determine whether the following equations have solutions that are:two different rational solutions: two different irrational solutions: exactly one rational solution: or two different imaginary solutions. s^2-5s-6=0

**algebra**

Graphing Quadratic Functions Find any x-intercepts and the y-intercept. If no x-intercepts exist, state this g(x)=2x^2+3x-1

**algebra**

Thank you so much for your help

**algebra**

How do you solve the quadratic formula 9 over 8 - 2 =5 over x^2

**algebra**

Thank you for taking the time to help me out

**algebra**

How do you solve the quadratic equation 7x^2-5=0

**college algebra**

Quadratic formula solve 9 over 8 - 2= 5 over x^2

**college algebra**

Sorry, I did not see it posted the first time so I didn't think it worked.

**college algebra**

How do you solve the Quadratic equation 7x^2-5=0

**algebra**

Determine wheter each pair of equations represent paralle lines. Show work 3x=5y-2 10y=4-6x

**algebra**

Solve using the substitution method and state if the system has a solution. 4p-2q=16 5p+7q=1

**com220**

before someone can fix this for you, you need to cite it.If you dont it is still concidered plagiarised. include the authors last name, date after using their work.

**algebra**

i need help on dis question.

**hca 270**

I wish I could help you, but I am having the same problems in this class. this is my second time through this class.

**physics**

a person carries a 58kg package of books up a flight of stairs the length along the stairs is 24 meters the vertical height of the stairs is 12 meters how much work is done in raising the package I know the answer is 6800 J but how to get????

**Chemistry**

The pH of a nitric acid solution is 1.2. What is the concentration of nitrate ion in the solution? Any help would be greatly appreciated, Thank you!!

**english**

Can you help me find the predicate in this sentence Kerry is one of Irelands twenty-six counties.

**COM 220 Axia college of University of Phoenix**

A.P.A.

**Chemistry**

I'm quite confused with this process, by doing this I get approx. 26 but the actual answer should be approx. 6 :(

**physics**

using ideas of torque and center of gravity explain why a ball rolls down a hill

**All core classes.**

What were some 80's icons? I have a project that's on the most important political and environmental events in the U.S during the 80's. I want to make some titles, for each subject (i had an assignment for almost each class, excluding my elective and p.e), and I...

**Systems of Inequalities-8th Grade Algebra**

I D K!

**Chemistry**

Atoms stick together in bonds to form molecules. What is responsible for this sticking? Thank you.

**History**

I'm designing my energy transformation for my rube goldberg project, and i can't seem to figure out how to design some of them. How could i represent the american boycott of the moscow olympics, the soviet boycott of the Los Angeles Olympics, the signing of the INF tre...

**English**

What's an idiom, simile, or metaphor for getting back at someone?

**english**

What is a simile, idiom, or metaphor for relief?

**History**

How did the Chernobyl disaster affect the U.S? Did it at all?

**Physics**

Two projectiles are launched form ground elvel at the same angle above the horizontal, and both return to groudn level. Projectile A has a launch speed that is twice that of projectile B. What are the ratios of the maximum heights of the balls? What are the ratios of the range...

**Physics**

A tennis ball is hit into the air and moves along an arc. Neglecting air resistance, where along the arc is the speed of the ball a)a minimum and b) a maximum? I'm thinking it's at a max at the begging and end, and a min at the top, but that's just a guess.

**Math (Word Problems)**

I need to know how to set up this problem: A salesman drives from Ajax to Barrington, a distance of 120 miles, at a steady speed. He then increases his speed by 10 mph to drive the 150 miles from Barrington to Collins. If the second leg of his trip took 6 minutes more time tha...

**physiology**

this is an exact question on my physiology final. i'd like to know the answer too

**MATH**

The ratio of graduate students to undergraduate studaent at a certain university is 4 to9. if there are 2340 students at the university how many undgergraduates are there?

**accounting**

On April 1, 2008, Company issued $600,000, 9% bonds for $645, 442 including accrued interest. Interest is payable annually on January 1, and the bonds mature on January 1, 2018. So the way I started the entry was: April 1, 2008 DR Cash 645,442 CR Interest Payable (600,000 *.09...

**science**

What is the Pro's and Con's of energy

**math**

use distibutive property. three loaves of bread at $1/99 each

**woodwork**

how to shape and edge a cam

**History**

What were some problems during the Renaissance. I am supposed to make an invention to help people during the renaissance.

**poetry**

i need help with penn foster examination 00779000

**poerty**

i need help penn foster examination 00779000

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