# Posts by Maria

Total # Posts: 2,009

**College Chemistry**

It worked! Thank you so much :)

**College Chemistry**

What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V? Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M, ...

**history of modern china**

was the expectation of chinese rulers during the taiping rebellion unrealistic?

**geography**

Been fearful of its neighbors

**Science**

can anyone please give me an example of a numbered key (classification) for these organisms about their structural features? squirrel,turtle, emu, goldfish and mouse. i need to make three but i need one example... thank you

**Physics**

Never mind, I figured this out.

**Physics**

A solid ball and a hollow ball, each with a mass of 2 kg and radius of 0.1 m, start from rest and roll down a ramp of length 3 m at an incline of 44°. An ice cube of the same mass slides without friction down the same ramp. What is the speed of the ice cube at the bottom ...

**Physics**

Thank you!

**Physics**

A 23-kg boy stands 3 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 180 kg m2. The boy begins to run in a circular path with a speed of 0.6 m/s relative to the ground. (a) Calculate the angular velocity of the merry-go-round in ...

**Grammar**

Thank you PsyDAG!

**Grammar**

What is the prefix, root and suffix of the word "subscribe"? My Answer: prefix - sub root - scrib suffix - e Can the suffix be a single letter? What about the word "misused"? Please help!? Am I right?

**Please Answer: Geography**

Describe the geography of Southern South America and how this geography influences economic activity? My Answer: Southern South America consists of 3 nations, Paraguay, Uruguay and Argentina. The Rio de la Plata is great river system that consists of 4 rivers that are also the...

**geometry**

The vertices of pentagon LMPQR are at L(4, -2), M(5, -2), P(8, -5), Q(6, -7), R(2, -4). The coordinates of the pentagon after two translations are L'(-5, -1), M'(-4, -1), P'(-1, -4), Q'(-3, -6), R'(-7, -3). How was LMPQR translated to create L'M'P...

**geography**

Taken as a whole, what would you say is the single most pressing problem found in Latin America or South America? What possible solutions can you develop? My Answer: In my opinion, the most pressing problem would have to be the management of poverty. South America is a huge ...

**Geometry Math**

If point M is the center of a sphere with the coordinates (-1,3,2) and point T is a point on the surface of the sphere with the coordinates (0,5,1), what is the radius of the sphere?

**Geometry Math**

Lines y= 2x/3+3&y=5 cut the ring formed by circles (x-3)2+(y-5)2=64 and (x-3)2+(y-5)2=25 into four parts. Find the area of each of the four parts.

**Math**

Find both the circumference area of the circle whose equation is (x-2)2+(y-3)2=64.

**maths**

4 3 - =8 2

**maths**

sorry the question was, show clearly that, 4 3 -- =8 2

**maths**

show clearly that 4 3 ---=8 2 solve the equation 5x2+14x-24=0

**Math**

x + (x + 17) = 45

**math**

María plans to enclose a rectangular area of her yard using the 16-foot side of her storage shed as one side of the enclosure, as shown above. If she uses 64 feet of fencing to complete the enclosure, what will be the length, x, of the enclosure?

**I need correct answers for all please !**

sorry, I worked hard to get the answers, you need to know this stuff though, try to answer and I will correct it for u

**Alg 2`**

what is the most simplified version of this? (x^2/x^2+2x+1)/(3x/x^2-1)

**Geometry**

Find the arc length, of a 130 degree arc, in a circle with a diameter of 7.2 inches. Round your answer to the nearest thousandth

**Geometry**

A 60 degree arc, of circle A, has exactly the same lenght as a 45 degree arc, of circle B. Find the ratio of the radius of circle A to the radius of circle B

**Geometry**

A circle is divided into three unequal sectors. One of the sectors has (x+40) degrees, the second sector has (2x+60) degrees, while the third sector has (3x+20) degrees. What is the value for x?

**math**

A laser pulse takes 2.56 seconds to travel from Earth to the Moon and return. Use this to calculate how far away the Moon is.

**composition(paraphrase this paragraph)**

self-service procurement. self service business intelligence. self-service recovery. user provisioning in private clouds. it's a wondrous world for end users today as IT departments roll out tools that hand them the reins to the data and services they desire, whether it&#...

**international trade**

India’s opening up to trade should be good for the U.S. if it reduces the relative price of goods China sends to the U.S. and hence increases the relative prices of the goods U.S. exports. Obviously, any sector in the U.S. hurt by trade with China would be hurt again by ...

**algebra**

Fill in the blank to make the two fractions equivalent. 3/4=/12

**English**

Idon't konw

**Algebra**

x^1/2 * y^1/6 *z^1/5. We are to use rational exponents to write an expression. The sqrt of x - the sqrt of y, over the sqrt of x + the sqrt of y. I need to simplify and use radicals as needed. I obviously do but what...?? Please assist. Thank you.

**chemistry**

If 10L of CO2 at STP and 50g sodium chloride react with excess ammonia and water, what is the limiting reactant and the mass of baking soda produced?

**math**

how do you find the area under a curve

**vance high school**

how i can used division of labor in a sentences?

**vance high school**

how i can used specialization in a sentences?

**Chemistry**

Determine the volume of nitrogen gas at a pressure of 3.00 atm if it had a volume of 400.0 mL at STP.

**Chemistry**

A gas is collected over water at 30.0 degrees celsius. It's pressure is 752.5 mm Hg. What is the pressure of the dry gas? Water vapor pressure at twenty degrees Celsius is 27.5 mm Hg.

**Chemistry**

A gas is collected over water at 30.0 degrees celsius. It's pressure is 752.5 mm Hg. What is the pressure of the dry gas? Water vapor pressure at twenty degrees Celsius is 27.5 mm Hg.

**math**

A pair of dice is rolled, and a number that appears uppermost on each die is observed, Refer to this experiment and find the probability of the given event. (Enter your answer as a fraction)The sume of the numbers ia an add number.

**Math**

2^x+1=1/16 find x

**chemistry**

what mass of ethanol(C2H5OH) will be required to prepare a 2.00m solution in 8.00kg of water?

**Mathematics**

thank you very much. in the 40 day.

**Mathematics**

Kate has a tennis lesson every 5 days. She has a basketball game every 8 days. If she has both a tennis lesson and a basketball game today, on what day will she have both again?

**Geometery**

A cylindrical water tank near Lisa's school is 18 meter high and has a circumference or 33 meter. The given formula can be used to determine the (v) of a cylinder?

**physics**

45

**physics**

A child loses his balloon, which rises slowly into the sky. a) If the balloon is 21.5 cm in diameter when the child loses it, what is its diameter at an altitude of 1150 m? Assume that the balloon is very flexible and so surface tension can be neglected. b) And what is the ...

**physics**

Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 3527 kg), which is made of steel (ρ = 7850 kg/m^3). In typical comic-book fashion, they decide to raise the yacht (which is now on the bottom of a lake) by filling it with ping-pong balls. A ping-...

**physics**

A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 2.19 cm and is 1.25 m above the bottom of the tank. The outlet pipe has a diameter of 5.93 cm and is 4.85 m above the bottom of the tank. A volume of 0.411 m^3 of water enters the tank ...

**physics**

A supertanker filled with oil has a total mass of 14.1·10^8 kg. If the dimensions of the ship are those of a rectangular box 271 m long, 93.1 m wide, and 93.1 m high, determine how far the bottom of the ship is below sea level (ρsea = 1020 kg/m^3).

**Pre-Calculus**

Find all solutions to the equation in the interval [0, 2pi) cos4x-cos2x=0 So,this is what i've done so far: cos4x-cos2x=0 cos2(2x)-cos2x (2cos^2(2x)-1)-(2cos^2(x)-1) No idea what to do next.

**chemistry**

a pitcher baseball moves at 44 M/s . It has 150 J of kinetic energy on its way to the catcher. What is the baseball 's mass?

**donwoody**

A football field forms a rectangle. 120yd long 53yd find the perimeter

**childhood education**

Children readiness to engage in make believe play and the social experiences that promote it

**Algebra 1**

My little sister needs help on her homework and I don't remember really how to do this. I can't tell her if the answers or if she is doing them is the correct way. So if you could please tell me the answer and how you got it that would be great...

**english**

I need help on writing a thesis statement for my informative essay for ENC 1101. I decided to write about adoption and I want to write what the advantages and disadvantages of adoption are. I'm very undecisive on how I should write it. Please help.

**physics**

A small object with mass 4.05 kg moves counterclockwise with constant speed 1.70 rad/s in a circle of radius 3.15 m centered at the origin. It starts at the point with position vector 3.15 m. Then it undergoes an angular displacement of 9.10 rad. (a) What is its new position ...

**business math**

ms. sue, is it $ 1,754.96? Thanks

**calculus**

a)find the first partial derivatives of f(x y)= x √1+y^2 b)find the first partial derivatives of f(x,y)= e^x ln y at the point (0,e)

**calculus**

find the domain of the function f (x,y) = e^-xy

**math**

7.5 inches

**C**

you are right the question is exactly like this... can you help me for this question.... thanks Write a MAIN function and a FUNCTION to compute the sum of the below series. ((-1)^(n+1)*n!)/(n^n) (from n=1 to infinity) Within the MAIN function: . Read a variable EPSILON of type...

**Math**

Janet has a circular garden in her front yard with a diameter of 8 feet. How does the diameter d compare to the circumference C of the garden? F) D = 1/3C G) D = 1/2C H) D = 2C I) D = 3C

**Math**

Sorry, The length is 7 7/8 in., and width is 5 3/4in.

**Geometry**

Area of trapezoid is 80 square units, height is 8 units. What is the lenght of median ?

**life orientation**

By quet at the job and find another job tha is gud for him by telling athers

**writing paper**

I need to add a cover page to my writing assinment. I can not find any information on what I include in the cover page. This is for Penn Foster College.

**algebra**

(3x3-4x2 -x+6) Divide By (x-2) its 9three x cubed negative 4 xsquare -x+6) divide by (x-2)

**Finance**

You want to have $5 million in real dollars in an account when you retire in 30 years. The nominal return on your investment is 8 percent and the inflation rate is 3.9 percent. What real amount must you deposit each year to achieve your goal?

**WORLD HISTORY**

My teacher ask us to draw a picture that represents a command economy what can I draw??

**counseling**

its with boundaries of children that have autism

**counseling**

when writing a paper on boundaries with children that have special needs what all would you write about? so far I have responsibility thanks

**Math**

what do you think about math

**math**

explain how the digit 1 can have diffrent values in 111

**math**

Tania is in charge of designing a school pennant for spirit week. She wants the base to be 3 1/2 feet and the height to be 6 1/2 feet. She has 20 square feet of paper available. Does she have enough paper? Explain.

**Chemistry**

how do you get the rate?

**math**

i have 30 coins made up of 5c and 20c pieces that total $3.45. how many of each do i have?????

**Physics**

Going at an angular velocity of 5.2 rad/sec, how far in kilometers will a car have traveled in 10 minutes? Do I just convert minutes to seconds and multiply or...?

**Physics**

A wheel 1 meter in diameter is rotating at 100 revolutions per minute without slipping along a level stretch of road and passes mile marker 0 at 12:00 noon. it continues past mile marker 0 for 10 minutes and then has a period of angular acceleration of 2.5x10^-2 radians per ...

**Science**

thanks

**Science**

Oceans receive freshwater from precipitation and rivers. Yet ocean level do not change very much from these actions. Why are ocean level not greatly affected? a) Water is constantly seeping underground in the ocean; B)Water is constantly evaporating over the ocean's ...

**English**

what are the strengths and what are the weaknesses of George and Lennie's relationship in John Steinbeck's "Of Mice and Men"?

**Pre-Calculus/Trivia**

csc(theta)= 1/x sec(theta)= 1/ sqrt(1-x^2) cot(theta)= sqrt(1-x^2)/x What are these equations used for in real life matters or in regards to calculus? Can't seem to find the answer anywhere :/

**history**

what did jefferson davis believe congress and the government should do about slavery?

**Economics**

-The "Baby Boomers" are in their retirement age. What affect might this have on the productive capacity of a country's labor force? -How does consumer demand and the price mechanism influences demand in the factor market?

**communication**

Can anyone explain to me what the meaning of "communication phenomenon" exactly is? Thankssss!

**math**

how can i make the target number 670,just by using the following digits. 6,9,6,5,9,50

**Social studies**

compare the political system and the political philosophies of China to those ofEgypt and Mesopotamia?

**Math 2**

did you hear about

**Sociology**

How to start my thesis statment according with C. Wright Mills about my autobiography and how relates research papers with this theme?

**Business Finance**

210,200.00

**Business Finance**

thanks

**math**

what is 18x5.25

**Algebra 1**

(8.4x10^9)(4x10^-5)

**chem**

Earlier I asked does the following represent an equilibrium situation: 1) A glass of iced tea still has sugar at the bottom after several minutes of stirring. If no more sugar can be dissolved could you explain why that represents an equilibrium? Please

**PHYSICS**

IS IT BETTER TO PUSH A GROCERY CART FROM THE BACK,OR TO PULL IT FROM THE FRONT.

**PHYSICS**

IS IT BETTER TO PUSH A GROCERY CART FROM THE BACK,OR TO PULL IT FROM THE FRONT.

**chemistry**

Do the following represent an equilibrium situation: 1) A glass of iced tea still has sugar at the bottom after several minutes of stirring. 2) The student population at a high school remains constant for 5 years.

**statistics**

A new extended-life light bulb has an average service life of 750 hours, with a standard deviation of 50 hours. If the service life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 600 hours and 900 hours?