Monday

April 21, 2014

April 21, 2014

Total # Posts: 189

**Math**

A motorist traveling 55 mph is being pursued by a highway patrol car traveling 65 mph. If the patrol car is four miles behind the motorist, how long will it take the patrol car to overtake the motorist?

**Chemistry - Please Help!**

XeO3 + I- ----> Xe + I2 (acidic solution) CN)2 -----> CN- + OCN- (basic solution) MnO2 + SO32- ---> Mn2+ + S2O62- (acidic solution) H2SeO3 + H2S -----> S + Se (acidic solution) Cl2 ---> Cl- + ClO3- (basic solution) ClNO2 -----> NO3- + Cl- (acidic solution)

**Chemistry**

Balance the following equation for a basic solution. MnO4-+C2O4-2= Mno2 + CO3-2

**math**

Kittens weigh about 100 grams when born and gain 7 to 15 grams per day. If a kitten weighed 100 grams at birth and gained 8 grams per day, in how many days will the kitten triple its weight?

**chemistry**

J. J. Berzelius collected the following data for three reactions: Reaction 1 – 11.56 grams of lead sulfide, PbS, were formed when 10.0 grams of lead reacted with 1.56 grams of sulfur Reaction 2 – 11.56 grams of lead sulfide were formed when 10.0 grams of lead reacted...

**chemistry**

thank you!

**chemistry**

When cane sugar reacts with oxygen in living systems, carbon dioxide and water are produced. What weight of carbon dioxide can be produced from the reaction of 15.0 grams of cane sugar with 15.0 grams of oxygen? (Hint: balance the equation) ___C12H22O11(s) + ___O2(g) ...

**chemistry**

thank you!

**chemistry**

how many H2O molecules can be formed from 200 H2 molecules and 200 O2 molecules?

**chemistry**

Manganese(III) fluoride, MnF3, can be prepared by the following reaction: 2MnI2(s) + 13F2(g) → 2MnF3(s) + 4IF5(l) If the percentage yield of MnF3 is always approximately 51%, how many grams of MnF3 can be expected if 40.0 grams of each reactant is used in an experiment?

**Chemistry**

thanks!

**Chemistry**

Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) → C2H5OH(l) What is the maximum amount, in kg, of ethanol that can be produced when 1.65 kg of ethylene (C2H4) and 0.0610 kg of steam are pla...

**Physical Chemistry**

Thanks!!

**Physical Chemistry**

Integrate the expression β = 1/V (δV / δT) at constant pressure, assuming that β is independent of temperature. By doing so, obtain an expression for V as a function of T and β at constant P.

**Chemistry**

Calculate the enthalpy change when 45 g of ice at -40.0 oC is heated to completely melt to liquid water at 0.0oC. (The heat of fusion for water is 333 J/g.)

**math**

Write a recursive formula for the sequence: 12,-1,-14,-27...

**physics**

The coefficients of friction between a 250 lb football sled and the grass are Mu(s)=0.6 and Mu(k)=0.4. For grass and cleats, Mu(s)=0.9. One 280 lb tryout exerts a horizontal push of 140 lb on the sled. What is the acceleration of the sled?

**Vista High school **

solve the following inequality. write your solutionin interval notation x^3-x<0

**algebra**

If you have 75 cents and you have 27 nickels and dimes how many nickels do you have.

**Math**

if a number is subtracted from the numerator of 3/5 and the same number is added to the denomminator of 3/5, the result is equivalent to 1. find the number

**math**

what times 60 equals 5076

**math**

rewrite the equation so that y is a function of x.then use the result to find y when x= -2,-1,0,1 -2y-3x-16=0

**math**

rewrite the equation so that y is a function of x.then use the result to find y when x= -2,-1,0,1 -6x-1=-4y+2

**math**

i meant 6x-2y=10

**math**

rewrite the equation so that y is a function of x.then use the result to find y when x= -2,-1,0,1 6x-2y=10

**math**

thanx for ur help

**math**

is that correct

**math**

4(1/2x+1/2)=2x+2 4/2x+4/2+2x+2 2x+2=2x+2 2x+2x=2+2 4x=4 x=1

**math**

4(1/2x+1/2)=2x+2

**math**

8x+6=3(4-x)

**math**

-6+5x=8x-9

**English**

Direct Object

**Physics**

A car traveling at 20 m/s applies the brakes. The coefficients of static and kinetic friction between the tires and the road are 0.80 and 0.50 respectively. (A) Determine the stopping distance if the car is able to stop as quickly as possible without skidding. (B) Determine th...

**Math**

What equivalent fraction would you use to subtract 1/3 from 5/9?

**Chemistry**

What is the temperature of 0.45mol of gas at a pressure of 1.0at and a volume of 10.1L ? if anyone can tell me what i need to do to solve this problem it would be helpful

**physics**

The radius of a merry-go-round is 7 meters, and it takes 12 seconds to make a complete revolution. What is the speed of an atom on the outer rim?

**Math**

How do you solve a(x+1)= b solving for x

**Math**

How do you solve a(x+1)= b solving for x

**biology**

What is meant by the statement, "Living things do not exist in isolation"?

**Chemistry**

If your body develops a charge of -17 (microcoulombs), how many excess electrons has it acquired, and what is their collective mass?

**Chemistry**

It's 50mg. I really dont understand how to do this.

**math**

what is the gross profit percent on a item bought for 3.50 at wholesale price and then sold at 5.00 for retail price

**frictionless ramp**

Suppose a 19.3 kg curling stone was on a frictionless ramp. If the ramp is 4.76 m tall and 19.5 m long (along the incline), how much mass must hang from the pulley in order that the stone not accelerate up or down the ramp?

**Physics Help**

A force sensor is used to measure a force applied to a 9.1 kg box on a hard, horizontal surface. It records that the box starts to move when the force is equal to 26.9 N. This force makes the box start to move with an acceleration of 0.2 m/s2. Find mu sub s/k respectively.

**algebra 1**

Choose the product. -7p3(4p2 + 3p - 1) -28p5 - 21p4 + 7p3 28p6 + 21p3 - 7p 21p3 + 8p2 + 3p4 - 8p -21p5 + 8p4 - 3p3

**Chemistry**

Calculate the uncertainty in the position (in A) of an electron moving at a speed of (6.5 +/- 0.1)* 10^5m/s. The mass of an electron is 9.109x10^-31 kg. Thanks!

**algebra**

If a train goes 25 mph how many hours. Does it need to go in 125 miles

**history **

How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism?

**history **

Describe President Reagan’s foreign policy goals and summarize several of the major, specific actions he took to meet those goals.

**history**

How was the civil rights movement of the 1950s and 1960s a continuation of the Reconstruction-era struggle for blacks to achieve equality?

**chemistry**

empirical mass = (12+1= 13) molar mass = 78 78/13 = 6; therefore, (CH)6 = C6H6 so thats correct?

**chemistry**

Benzene has the empirical formula CH and an experimental molar mass of 78 g/mol. What is its molecular formula? Explain how you got your answer.

**history**

How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism

**physics**

A charge of 2.1 nC and a charge of 4.7 nC are separated by 57.90 cm. Find the equilibrium position for a -4.7 nC charge. ____ cm from the 2.1 nC charge. what is the answer? and how did you get it? thaanks

**chemistry**

will SrSO4 precipitate when .1g of Na2SO4 are added to 1L of a .01M solution of Sr

**MATH FOR TEACHERS**

the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the floor) Give an organize...

**math for elementary teachers**

the roof is a right rectangular prism and the floor is a rectangle. (its the outside of a warehouse). for the roof- the base has 51 x 51. The rectangular for the floor is 120 (l) x 20 (h) x 90 (w). need to find the volume and surface area. (counting the floor) Give an organize...

**math for elementary teachers**

thank you. helped out alot!

**math for elementary teachers**

Suppose that carpeting cost $12.36 per square yard at a carpet store. what will be the cost to carpet a conference room if the rooms dimensions are 110 ft by 42 ft. (the conference room should seat 380 people using 6' diameter tables each seating 10 people.)

**Chemistry**

A string has a length of 84 cm. The string is stretched taut, and both ends are restricted to be nonmoving. Touching the string at which of the following points will not produce a standing wave when the string is plucked?

**science**

If the magnitude of the electric field in air exceeds roughly 3 X10^6 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 52 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks without a spark forming (w...

**history **

How was Fort William Henry massacre used by the British and the American colonists to justify brutality against the Indians? HELPPPP PLEASE

**history **

Discuss the importance of landscape in crafting battle strategy for both the French and the English. HELP PLEASE!

**philosophy**

what makes an idea dangerous?

**business/accounting**

Christy Burch and Myung Lim, partners, compared their current income statement with their income statement of a year ago. They noted that sales were 12.0% higher than a year ago. They also noted that the total expenses were 20.0% higher than a year ago. What type of analysis s...

**Liberal Arts**

Part 1: You finally made it…graduation day has arrived! Your parents are so proud that they are throwing you a HUGE party. They have rented a big tent for your graduation party just in case it rains. The inside of the tent (represented by the blue area) is set up for a da...

**trigonometry **

A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will it take her to go dire...

**trigonometry **

A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will it take her to go dire...

**trig**

A river is 2000 ft wide and flowing at 6 mph from north to south. A woman in a canoe starts on the eastern shore and heads west at her normal paddling speed of 2 mph. In what direction (measured clockwise from north) must she aim her canoe? How long will it take her to go dire...

**english**

How does the text use clothing and garments (or the lack thereof) to portray Edna’s rebellion against Victorian norms? Use examples from the book to support your answer.

**introduction to floral design amd flowers**

Im trying to find out if my answers to the exam is right

**basics and tools of floral design**

The fabric label doesn’t say if the linen was preshrunk. You test the fabric for shrinkage and determine it needs to be shrunk. How do you do this? A. Wash the material in cold water and dry on high in dryer. B. Immerse the material in hot water and drip dry. C. Wash the ...

**history**

Flexible

**chemistry**

calculate the hydronium ion concentration in an aqueous solution that contains 2.50x10^-6M in hydroxide solution

**math boxes 3.3**

make up a set of at least twelve numbers that hav the following landmarks maximum:8 range:6 mode:6 median:5

**physics**

A 30 kg child steps to a dock from a 60 kg boat,giving the boat an acceleration of 2m/s^2. Neglecting water Resistance, the acceleration experienced by the child is?

**Essential Mathematics 1**

Can somebody please help me evaluate: 13 1/3 + 6 2/9 ? (=

**Essential Mathematics 1**

Yay! Thanx soooo much! <3

**Essential Mathematics 1**

The answer would be 7 right?

**Essential Mathematics 1**

Can somebody please help me Evaluate: 3 1/9 * 2 1/4 ? (=

**Essential Mathematics 1**

Nope. its 10 2/3 divided by 4

**Essential Mathematics 1**

10 2 2/3 / 4

**PHYSICS**

force = change of pressure/area = 25000 N

**PHYSICS**

The door and the seals on an aircraft are subject to a tremendous amount of force during flight. At an altitude of 10,000 m (about 33,000 ft), the air pressure outside the airplane is only 2.7 x 104 N/m2, while the inside is still at normal atmospheric pressure, due to pressur...

**Chemistry**

A 110.-g sample of copper (specific heat capacity = 0.20 J/°C · g) is heated to 82.4°C and then placed in a container of water at 22.3°C. The final temperature of the water and copper is 23.5°C. What is the mass of the water in the container, assuming th...

**Chemistry**

In a coffee-cup calorimeter, 1.70 g of NH4NO3 is mixed with 76.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents is 23.71°C. Assuming the solution has a heat capacity of 4.18 J/°C &mi...

**calculus 2**

Six and one-half foot-pounds of work is required to compress a spring 3 inches from its natural length. Find the work required to compress the spring an additional one-half inch.

**algebra**

b=5

**Advance Algebra (Graphing)**

I need help finding the asymptotes, and domain of these two graphs.. 1) 1/x^2 Vertical Asym.:? Domain:? Horizontal asym.: y=0 2) x^2/1 Vertical Asym.:? Domain:? Horizontal asym.: none THANKS!

**chemistry**

i do not understand how to do these and i have a question on my test tomorrow on this stuff can someone explain to me how to do this? for each of the following molecules draw the lewis structure, determine the shape, determine the polarity, and determine the kinds of intermole...

**science**

the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.

**chemistry**

the human body obtains 2000 kj from a candy bar. if this energy were used to vaporize was at 100 degrees celcius, how much water in liters could be vaporized? ??(assume that the density of water is 1.0g/ml)

**College Algebra**

Determine whether x+6 is a factor of x^3+4x^2-27x-90

**Algebra**

Thanks Damon!!!

**Algebra**

ok did i do this right? evaluate the expression log(base4)(16)(4) log(4) 16 + log(4) 4 ? can you do that?

**Algebra**

Ok well bobpursley first of all your a genius ;) second of all im a newbie at this logorithm stuff. thank you for helping me!

**Algebra**

Expand the expression of log5x^(1/3)y^6 5 is the base of the log. this is pretty tricky stuff and im not sure how to attempt it..

**Algebra**

Solve the equation and check for extraneous solutions. 10^((x^2)+1)=100,000 How do i handle this when the exponents have exponents?

**Algebra**

Find a power function of the form y=ax^b whose graph passes throught the points (2, 5) and (8, 12). How do i solve this??

**Physics**

NVM I got it!!