# JULIE

Popular questions and responses by JULIE-
## chem

How many moles of carbon are needed to react with 525 g of hematite 2FeO3+6C->4Fe+3Co2 idk how to convert moles of fe2o3 to carbon

*asked on September 29, 2013* -
## Physical Science

How many meters away is a cliff if an echo is heard 0.500 s after the original sound? Assume that sound traveled at 343 m/s on that day.

*asked on March 6, 2010* -
## Math

Isaac throws an apple straight up (in the positive direction) from 1.0 m above the ground, reaching a maximum height of 35 meters. Neglecting air resistance, what is the ball’s velocity when it hits the ground?

*asked on April 18, 2016* -
## physics

A hot iron horseshoe (mass = 0.43 kg), just forged (Fig. 14-16), is dropped into 1.60 L of water in a 0.26 kg iron pot initially at 20°C. If the final equilibrium temperature is 26°C, estimate the initial temperature of the hot horseshoe. Could someone

*asked on April 23, 2012* -
## geometry

find the value of the variable and LN if M is between L and N. LM=8a, MN=11a, LM=24

*asked on December 14, 2010* -
## science physics

Two locomotives approach each other on parallel tracks. Each has a speed of v = 95 km/h with respect to the ground. If they are initially d = 7.5 km apart, how long will it be before they reach each other?

*asked on October 6, 2010* -
## Math

Three times a number increased by seven is less than eleven

*asked on January 21, 2020* -
## Physics

A baseball thrown at an angle of 55.0 degrees above the horizontal strikes a building 16.0 m away at a point 8.00 m above the point from which it is thrown. Ignore air resistance. Find the magnitude of the initial velocity of the baseball (the velocity

*asked on September 19, 2006* -
## Chemistry

Calculate E, E^o and (delta)G^o for the following cell reaction: Mg(s) + Sn2+(aq) (yields) Mg2+(aq) + Sn(s) [Mg2+] = 0.045 M, [Sn2+] = 0.035 M

*asked on May 11, 2010* -
## chemistry 105

Lithium reacts with nitrogen gas according to the following reaction: 6Li(s)+N2(g)-->2LiN(s) What mass of lithium (in g ) is required to react completely with 59.9 mL of N2 gas at STP?

*asked on October 23, 2011* -
## Physics

Answer True or False to each case. Coulomb's law states that the force between static charges Q1 and Q2 is proportional to Q1 Q2. is proportional to the total charge Q1+Q2. is K Q1Q2/r where K is a universal constant. is proportional to 1/r2. is a force of

*asked on July 9, 2015* -
## Algebra

How can you use an equation to make a prediction from a pattern. I think that you can do based on the pattern giving you a base of probability to forecast with a reasonable degree of confidence something in the future.I would think that your degree of

*asked on August 27, 2014* -
## Physical Science

A rock thrown straight up climbs for 2.50 s,the falls to the ground. Neglecting the air resistance, with wat velocity did the rock strike the ground?

*asked on March 6, 2010* -
## math help

An engineer is required to survey a nonrectangluar plot of land but is unable to measure side UT directly. The followng data are taken; RU=130 meters, RS=12m ST=90m, angle RST=115, and angle RUT=100. Calculate the length of side UT and the area of the

*asked on January 12, 2008* -
## algebra

you are buying orange juice for $4.50 per container and have a gift card worth $7. TheFunction f(x)=4.50x-7 represents your total cost f(x) if you buy x containers of orange juice and use the gift card. How much do you pay to buy 4 containers of orange

*asked on November 2, 2015* -
## physics

A positively charged glass rod is brought close to a neutral sphere that is supported on a nonconducting plastic stand. Sketch the distribution of charges on the sphere if it is made of: a) Aluminum b) Non-conducting plastic

*asked on January 31, 2013* -
## math

The volume of a pyramid varies jointly with the base area of the pyramid and its height. The volume of one pyramid is 24 cubic inches when its base area is 24 square inches and its height is 3 inches. What is the volume of a pyramid with a base area of 10

*asked on November 15, 2014* -
## Physical Science

A cubic tank holds 1,000.0 kg of water. What are the dimensions of the tank in meters? Explain your answer.

*asked on March 6, 2010* -
## math

find the 5 diff. ways a collection of 100 coins-pennies, dimes, and quarters- can be worth exactly worth $4.99.

*asked on January 27, 2009* -
## inference

what it means inference

*asked on February 12, 2013* -
## Chemistry

I need to find out what the total acid concentration is in Kool-Aid. If 23.3 mL of 0.1043M NaOH neutralize a 60 mL solution of Kool-Aid (10 mL) and water (50 mL), what is the total concentration in a 10.00 mL aliquot of Kool-Aid? If you prepared a standard

*asked on February 15, 2011* -
## algebra

Find the equation of the line that passes through the points ( 8, - 15 )and(-2,5). write the equation in y=mx = b form.

*asked on February 19, 2011* -
## physics help please...

A light spring of constant k = 170 N/m rests vertically on the bottom of a large beaker of water. A 5.70 kg block of wood (density = 650 kg/m3) is connected to the spring and the mass-spring system is allowed to come to static equilibrium. What is the

*asked on December 20, 2010* -
## math

What are the machine numbers immediately to the right and left of 2^m? How far is each from 2^m?

*asked on September 14, 2008* -
## Science

Why is pseudo science not considered real science

*asked on September 22, 2019* -
## Genetics 160

Using D for tall plants and d for dwarf plants, a 1:1 ratio is obtained in which of the following crosses? These are my choices: Dd X dd DD X dd DD X Dd DD X DD Dd X Dd

*asked on September 29, 2013* -
## physics

A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 19.0{\rm cm} , giving it a charge of -13.0\mu {\rm C} Find the electric field just outside the paint layer. Find the electric field 8.50{\rm cm} outside

*asked on February 1, 2013* -
## Calculus grade 12

Determine the equation of the tangent line to the function (² = square): f(x) = x + cos²x at x = pie/4

*asked on April 12, 2012* -
## Finance

Use the following financial statements for Lake of Egypt Marina, Inc. LAKE OF EGYPT MARINA, INC Balance Sheet as of December 31, 2012 and 2011 (in millions of dollars) 2012 2011 2012 2011 Assets Liabilities and Equity Current assets: Current liabilities:

*asked on September 9, 2012* -
## Math

Write a mixed number that is equivalent to 16/3

*asked on December 12, 2019* -
## chemistry 105

A 260-mL flask contains pure helium at a pressure of 743 torr. A second flask with a volume of 480 mL contains pure argon at a pressure of 715 torr. If the two flasks are connected through a stopcock and the stopcock is opened, what is the partial pressure

*asked on October 23, 2011* -
## Chemistry 105

Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon dioxide gas at STP.

*asked on October 23, 2011* -
## Algebra

Lisa brought half of her savings to the bakery and bought 12 croissants for $14.20. The amount of money she brings home with her is more than $2. Use an inequality to find how much money she had in her savings before going to the bakery. (Write the

*asked on September 27, 2018* -
## geometry

What's the next number 360, 180, 60, 15...?

*asked on March 20, 2012* -
## Physics

A golf ball is given an initial speed of 20 m/s and returns to ground level. Which launch angle above level ground results in the ball traveling the greatest horizontal distance? Neglect friction. 1. 60 degrees 2. 45 3. 30 4. 15 The answer is 45 but I was

*asked on June 15, 2011* -
## Physical Science

How much would 80.0 kg person weight (a) on Mars, where the acceleration of gravity is 3.93 m/s2, and (b) on Earth's Moon, where the acceleration of gravity is 4.63 m/s2?

*asked on March 6, 2010* -
## newton's method #2

i want to verify that when newton's method is used to compute sqrt(R) (by solving the equation x^2=R), the sequence o iterates is defined by x_(n+1)=.5(x_(n) + (R/x_(n))

*asked on September 28, 2008* -
## Math

It takes a plane 40 minutes longer to fly from Boston to Los Angeles at 525 miles per hour than it does to return at 600 miles per hour. How far apart are the cities?

*asked on November 23, 2007* -
## math

A nurse must give 1 12 milligram of a drug for each kilogram of patient weight. If Mr. Krisanda weighs (or has a mass of) 60 kilograms, find the amount of the drug Mr. Krisanda should be given.

*asked on February 17, 2018* -
## algebra 1

a 100- foot cable is cut into two pieces.the first piece is 18 ft longer than the second. how long is each piece

*asked on January 6, 2011* -
## math

At 9:30 A.M. Andrew left Exeter for Portsmouth, cycling at 12 miles per hour At 10:00 A.M. Stacy left Portsmouth for Exeter, cycling at 16 miles pewr hour. The distance from Exeter to Portsmouth is 20 miles. At what time did they meet?

*asked on November 23, 2007* -
## music

what does a sixteenth note = ? A sixteenth note is half of an eighth note. it half of a half of a beat

*asked on August 27, 2006* -
## chemistry

Given two liters of 0.496M KCl describe how you would use this solution to prepare 250.0 ml of 0.175M KCl.

*asked on November 7, 2015* -
## geometry

An equilateral triangle has sides that measure 5x+3 units and 7x-5 units. What is the perimeter of the triangle?

*asked on November 8, 2011* -
## Physical Science

Find the resulting acceleration from a 300 N force that acts on an object with a mass of 3,000 kg.

*asked on March 6, 2010* -
## science

in which state of matter do particles stay close together,yet are able to move past one another? 1)solid 2)gas 3)liquid 4)plasma

*asked on January 14, 2010* -
## Chemistry 105

Ozone is depleted in the stratosphere by chlorine from CF3Cl according to the following set of equations: CF3Cl+UV light-->CF3+Cl Cl+O3-->ClO+O2 O3+UV light-->O2+O ClO+O-->Cl+O2 What total volume of ozone measured at a pressure of 22.0 mmHg and a

*asked on October 23, 2011* -
## Chemistry 105

A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9.3 atm?

*asked on October 23, 2011* -
## Math

How many different rectangles can you draw that have a perimeter of 48cm? whole numbers only.

*asked on July 22, 2010* -
## Math

The scale drawing of a room is drawn on a grid that represents a quarter-inch grid paper. The scale is 1/4 in.:4 ft. Redraw the scale drawing of the same room using a different scale. What scale did you use? What is the length and width of the actual room?

*asked on February 27, 2020* -
## Physics

A car traveling at 14 m/s accelerates at 2.11 m/s2 for 14 seconds. To the nearest meter how far does it travel? To the nearest tenth of a m/s, what is the final velocity of the car in the previous problem?

*asked on January 24, 2012* -
## english - text commentary "Painful case"

Hello, I'm french student and I must to make a text commentary and I need your help finding some idea to develop. It's an extract from "Painful case" by James Joyce Thank you! When he gained the crest of the Magazine Hill he halted and looked along the

*asked on April 12, 2011* -
## Physics

A Ferris wheel with radius 14.0 m is turning about a horizontal axis through its center, as shown in the figure below. The linear speed of a passenger on the rim is constant and equal to 6.60 m/s. What is the magnitude of the passenger's acceleration as

*asked on September 19, 2006* -
## mathematics

solve for x 5x + 34 = -2(1 - 7x)

*asked on September 18, 2020* -
## chemistry

order from smallest to biggest 10g , 100mg , 0.1kg 1km ,100m , 1000cm

*asked on February 4, 2019* -
## English

A topic sentence should be very long. 1. True 2. False Please recheck my answer. I say True

*asked on July 16, 2016* -
## physics

You throw a ball downward from a window at a speed of 2.7 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below?

*asked on October 15, 2013* -
## Algebra

A ball is dropped from the top of a building that is 784 feet high. The height of the ball above ground level is given by the polynomial function h(t)= -16t to the second power + vot + ho where t is measured in seconds, vo is the initial velocity and ho is

*asked on July 28, 2013* -
## Chemistry

Given that E^o = 0.52 V for the reduction of Cu+(aq) + e - (yields) Cu(s) Calculate E^o, (delta)G^o and K for the following reaction at 25°C. 2Cu2+(aq) (yields) Cu2+(aq) + Cu(s)

*asked on May 11, 2010* -
## chemistry

Calculate the pH of a solution prepared by mixing 25.0 mL of 0.60 M HC2H3O2 and 15.0 mL of 0.60 M NaOH?

*asked on May 6, 2010* -
## physics

The New River Gorge bridge in West Virginia is a 518 m long steel arch. How much will its length change between temperature extremes -19°C and 39°C? (answer in cm)

*asked on November 30, 2009* -
## AP Chemistry

Finish the equation: Solutions of zinc sulfate and sodium phosphate are mixed

*asked on October 28, 2007* -
## English

Choose the answer with the correct grammar and punctuation. Question 4 options: With machetes, the explorers cut their way through the tall grasses to the edge of the canyon. Then they began to lay out the tapes for the survey. With machetes, the explorers

*asked on September 16, 2020* -
## Math

The length of a rectangle is 8 cm longer than its width , if the perimeter is 84 cm , what is its area

*asked on January 20, 2016* -
## math

if about 32,680 kilobytes of memory is still available how many more pictures can they take

*asked on August 27, 2015* -
## Management

within an organization the first step in human resources planning is

*asked on February 22, 2015* -
## Chemistry 105

A sample of N20 gas has a density of 2.65 g/L at 298 K. What must be the pressure of the gas (in mmHg )?

*asked on October 23, 2011* -
## arithmetic

THE TOTAL AGE OF GROUP OF PARENTS IS 342.A NEW PARENT AGED 48 JOINS THE GROUP AND THE AVERAGE RISES BY 1. WHAT IS THE ORIGINAL AVERAGE.

*asked on October 11, 2011* -
## Math

Eggplants in Thailand are 1.24 baht per kilogram, where one dollar is worth 1.37 baht. What is the price of eggplants in dollars per pound?

*asked on September 11, 2011* -
## Physics

Earth's moon is 3.8 X 10 8 m from the planet and is in freefall. Acceleration due to the Earth's gravity acting on the moon is 2.70X 10 -3. What is the moon's speed? How long does it take to make a complete orbit?

*asked on April 22, 2010* -
## integral confusion

integral of Sec[2x]Tan[2x] i know u is sec 2x du=2sec2xtan2x dx what would i have to multiply with du so it would equal tan 2x dx? if my question is confusing, then here's another example of what i'm talking about: integral of (3x-2)^30 dx u=3x-2 du=3 dx

*asked on November 26, 2007* -
## Web design

Is wireless networks the most difficult network to set up?

*asked on September 27, 2019* -
## Science

How are the respiratory and circulatory and respiratory systems similar? A) Both systems provide glucose and other substances to cells. B) Both systems regulate blood flow throughout the body. C) Both systems help remove carbon dioxide from the body. D)

*asked on March 30, 2018* -
## Math

a student answered 86 problems on a test and got a 98%. How many problems were on the test?

*asked on November 21, 2016* -
## math

The student to teacher ratio is 19:1 at a local school and there is a total of 500 students and teachers. How many teachers and how many students are there. I'm not sure how to begin to set this up since I have two unknowns and not only one.

*asked on April 11, 2016* -
## Math

The length of a rectangle is 8 cm longer than its width , if the perimeter is 84 cm , what is its width

*asked on January 20, 2016* -
## Calculus

6e^3t=9e^2t

*asked on October 13, 2015* -
## Physics

The electric potential at a position located a distance of 20.1 mm from a positive point charge of 6.50×10-9C and 12.1 mm from a second point charge is 1.26 kV. Calculate the value of the second charge.

*asked on July 13, 2015* -
## chemistry 11

Food manufacturers sometimes add calcium acetate to puddings and sweet sauces as a thickening agent. What volume of 0.500 mol/L calcium acetate, Ca(CH3COO)2 (aq), contains 0.300 mol of acetate ions? So I've been over this a hundred times and I still can't

*asked on December 17, 2014* -
## Chemistry

Complete each calculation. Express your answer to the correct number of significant digits. a)4.02mL + 3.76mL +0.95mL b)(2.7 x 10^2m) x (4.23 x 10^2m) c)5092kg divided by 23L d) 2-6.3 + 6-7 e)(6.853 x 10^3L) + (5.40 x 10^3mL) f)(572.3g + 794.1g) divided

*asked on September 11, 2014* -
## Algebra

Is (1, -4) a solution for the equation y = -2x? My answer is 1 = 2 (-4) 1 = -8 No it isn't

*asked on August 27, 2014* -
## Precalculus

The application of one function followed by the application of a second function to the result of the first as in F^-1(f(x)) is called composition of functions. The two functions need not be inverse of each other. In a diagram, the output of one function

*asked on February 10, 2013* -
## accounting

A review of the ledger of Terrell Company at December 31, 2012, produces these data pertaining to the preparation of annual adjusting entries. 1. Prepaid Insurance $18,279. The company has separate insurance policies on its buildings and its motor

*asked on October 2, 2012* -
## Calculus grade 12

differentiate the function ( a) y = cos³x b) y = Sin²xCos3x c) y = Sin (x³)

*asked on April 12, 2012* -
## trig.

A ladder 20 feet long leans against the side of a house. Find the height from the top of the ladder to the ground if the angle if the angle of elevation of the ladder is 80°

*asked on March 7, 2012* -
## Chem 105

A 1.5-L container of liquid nitrogen is kept in a closet measuring 1.3 m by 1.3 m by 1.8 m. Assuming that the container is completely full, that the temperature is 22.3 C, and that the atmospheric pressure is 1.2 atm , calculate the percent (by volume) of

*asked on October 23, 2011* -
## Chemistry 105

The air in a bicycle tire is bubbled through water and collected at 25 C. If the total volume of gas collected is 5.65 L at a temperature of 25 C and a pressure of 729 torr, how many moles of gas was in the bicycle tire?

*asked on October 23, 2011* -
## chemistry 105

Consider the following reaction: Li2S(aq)+Co(NO3)2(aq)-->2LiNO3(aq)+CoS(s) What volume of 0.150 M Li2S solution is required to completely react with 125 mL of 0.150 M Co(NO3)2?

*asked on October 10, 2011* -
## Algebra

what is the square root of 12x^3y^2

*asked on May 14, 2011* -
## Calculus

Find the area of the region enclosed by the inner loop of the curve. r = 5 + 10sin(θ) Any help would be greatly appreciated!!!

*asked on April 4, 2011* -
## physics

A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 2.00 cm, and the toy is released. If the toy has a mass of 105 g and rises to a maximum height of 75.0 cm, estimate the force

*asked on January 11, 2011* -
## Physical Science

What was the average speed in km/h of a car that travels 400.0 km in 4.5h?

*asked on March 6, 2010* -
## Physical Science

A hot dog bun (volume 240cm3) with a density of 0.15g/cm3 is crushed in a picnic cooler into a volume of 195cm3. What is the new density of the bun?

*asked on March 6, 2010* -
## 3rd grade math

Writing in math, how would a 3rd grader explain how to use multiplication to convert yards to feet?

*asked on December 10, 2009* -
## physics help

Larry weighs 300 N at the surface of the earth. what is the weight of the earth in the gravitational field of Larry? -would it still be 300 N

*asked on October 17, 2007* -
## physics

A 920 g empty iron kettle is put on a stove. How much heat in joules must it absorb to raise its temperature form 15.0° C to 93.0° C? (The specific heat for iron is 113 cal/kg · °C.)(1 cal = 4.184 J)

*asked on January 22, 2013* -
## physics

Help, please :( A dog pulls on a pillow with a force of 6.1 N at an angle of 27.7 ◦ above the horizontal a) What is the x component of this force? Answer in units of N. b) What is the y component of this force? Answer in units of N.

*asked on September 27, 2019* -
## algebra

There are 5 red tiles and 5 blue tiles with the letter A in a bag. There are also 6 red tiles and 4 blue tiles with the letter B in the bag. What is the probability that a randomly selected tile is blue or has the letter B?

*asked on September 22, 2019* -
## physics

A projectile is launched from the ground level to the top of a cliff which is 195m away and 135m high. If the projectile lands on the top of the cliff 6.6s after it is fired, find the initial velocity of the projectile( magnitude and direction). Neglect

*asked on October 26, 2018* -
## English/writing

Can someone tell me if this sentence is ok? Or give suggestions on how I can make it better? The students not only raised money during the walk-a-thon but continued to collect pledges three weeks afterward.

*asked on April 14, 2018*