# Al

Popular questions and responses by Al-
## math

Aaron earns $1.50 for every video game he sells. When he sells one carton of 30 video games, he earns an additional $10. What is the minimum number of video games he has to sell in order to earn $450?

*asked on March 5, 2015* -
## chemistry

If the formula of a oxide is X2O3, what is the formula of the chloride of X? (A) XCl3 (B) XCl (C) X3Cl (D) XCl6

*asked on September 8, 2008* -
## Chemistry

How many valence electrons does molybdenum have? (give only 1 answer) Go to this site and look for the electrons available in the outside shells. Click on element #42 and scroll down the menu on the left side until you come to electron configuration.

*asked on April 1, 2007* -
## Math fractions

Jackie loves to cook fried foods. She recorded the total amount of oil that she used each month in the table below. In January she used 3/5 of the amount of oil that she used in Fedruary. Fill in the amount of oil that Jackie used in January in the table

*asked on April 2, 2017* -
## Chemistry

List Sn , Sn2+, Sn4+ in order of decreasing ionization energy

*asked on October 18, 2015* -
## integral calculus

a rectangular plate 12ft long and 8 ft wide is submerged vertically with the longer edge in the surface of the water. Find the force on one side of the plate.

*asked on May 7, 2012* -
## Calculus

a hyperbola passing through (8,6) consists of all points whose distance from the origin is a constant more than its distance from the point (5,2). find the slope of the tangent line to the hyperbola at (8,6).

*asked on October 26, 2014* -
## Chemistry

A protein subunit from an enzyme is part of a research study and needs to be characterized. A total of 0.135g of this subunit was dissolved in enough water to produce 2.00 mL of solution. At 28 ∘C the osmotic pressure produced by the solution was 0.138

*asked on June 27, 2014* -
## chem

Aspartame, an amide, is the sweetener commonly used in diet cola.What is the carboxylic acid that is a reactant in the production of aspartame.

*asked on April 26, 2012* -
## Physics

Water flows from a fire truck through a hose that is 11.7 cm in diameter and has a nozzle that is 2.0 cm in diameter. The firemen stand on a hill 5.0 m above the level of the truck. When the water leaves the nozzle, it has a speed of 20.0 m/s. 1) Determine

*asked on April 10, 2017* -
## Geometry

The circumference of a circle is 20 pi cm. Find diameter, radius, and area of the disk, the length of an arc of 90 angle and area of a 90 angle sector. Answer in terms of pi. d= ___ r= _____, disk area= _______ arc length =______, sector area =________

*asked on February 26, 2015* -
## CHEMISTRY

Identify the conjugate base in the following reaction. H2O (l) + HCO31- (aq) ¨ H3O+ (aq) + CO32- (aq)? Identify the Bronsted-Lowry acid in the following reaction. H2O (l) + HCO31- (aq) ¨ H3O+ (aq) + CO32- (aq)

*asked on December 3, 2014* -
## chemistry

A mixture of 3.00 g of silver and copper metals was dissolved in excess nitric acid. Resulting salts, silver(I) nitrate and copper(II) nitrate, were isolated and dissolved in enough water to make 0.100 L of a solution with a total concentration of the

*asked on September 29, 2014* -
## math

The radius of a circular oil slick expands at a rate of 8 m/min. a. How fast is the area of the oil slick increasing when the radius is 30 m? = 480pi b.If the radius is 0 at time t=0 , how fast is the area increasing after 2 mins? i cannot get part b!

*asked on October 12, 2007* -
## Math

Lee walks along the edges of a rectangular pool from point A to B to C to D, a distance of 38 metres. Marina walks along the edges of the same pool from B to C to D to A, a distance of 31 metres. What is the perimeter of the pool, in metres?

*asked on October 24, 2017* -
## math

At 8 A.M., Dylan and his neighbor, Mickey, drove in their cars to a city that was 240 mi. away from their neighborhood. When Dylan reached the city, Mickey had 40 mi. to go. He finally completed the trip 48 minutes later. a) How long did it take Mickey to

*asked on February 26, 2015* -
## math

A basket contained 75 brown eggs and some white eggs. Salima found that 15% of the total number of eggs were rotten. Of the rotten eggs,2/3 were white and the remaining 6 were brown. a) How many white eggs were there altogether? b) How many eggs were not

*asked on February 19, 2015* -
## chem

carbamic acid and ammonia react to form an amide and water. What is the amide product of this reaction.

*asked on April 26, 2012* -
## geometry

find the area bounded by a regular pentagon with radius 6 cm. round to the nearest tenth.

*asked on March 2, 2015* -
## Physics

ANY ANSWERS WILL HELP! THANKS! 1. Isolated points of electric charge are called ____. 4b. ____ was the American physicist who first measured this fundamental unit of charge. 5. This type of electrification occurs when the charging rod touches an

*asked on December 17, 2013* -
## calculus

lim_(theta->0)(cos(6 theta)tan(6 theta))/(theta)

*asked on June 2, 2012* -
## physics

A simple Geiger counter is constructed out of a setup similar to what we just used in problem 5. A thin wire with a linear charge density _ is held in the center of a cylindrical tube, which is filled with an inert gas. When a high speed 2 particle coming

*asked on September 23, 2008* -
## physics

a thin wire with linear charge density _ is surrounded by a conducting cylindrical shell. (a) If the electric field must be zero inside a conductor, is the electric field due to the wire shielded from extending beyond the conducting shell? (b) Find the

*asked on September 23, 2008* -
## physics

the region 0 < r < r1 is a charged insulating sphere with uniform charge density _E, the region r1 < r < r2 contains free space, and the region r2 < r < r3 is an insulating spherical shell with uniform charge density ��_E. What is the

*asked on September 23, 2008* -
## calculus

A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $30/ft and on the other three sides by a metal fence costing $10/ft. If the area of the garden is 42 square feet, find the dimensions of the garden that

*asked on November 4, 2007* -
## mustangs/horses

Does anybody know any really good web sites on mustangs or horses? Thank you http://en.wikipedia.org/wiki/Mustang_(horse) http://www.ansi.okstate.edu/breeds/horses/mustang/

*asked on March 28, 2007* -
## Physics

An airplane traveling at 200 mph in a direction of 40 degrees north of east encounters a wind blowing east at 50.0 mph. Find the velocity of the plane measured from the ground.

*asked on September 26, 2017* -
## algebra

The equation f(x) = 4x2 − 16x + 9 represents a parabola. What is the vertex of the parabola? (2, −7) ( −2, 57) (4, 9) ( −4, −137)

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

An airplane is heading due south at a speed of 734 km/h . A wind begins blowing from the southwest at a speed of 110 km/h (average). In what direction should the pilot aim the plane so that it will fly due south?

*asked on September 3, 2015* -
## Chemistry

I need definitions for chemistry and I can't come up with any heterogeneous reaction homogeneous reaction activation energy activation energy activated complex elementary reaction

*asked on March 16, 2015* -
## MATH

a rodeo performer spins a lasso in a circle perpendicular to the ground. the circle has a diameter of 118cm. she starts with the knot at the lowest point which is at 90 cm above the ground, she spins the lasso and .5 seconds later the knot is at the

*asked on January 16, 2015* -
## AP Chem

MnS(s) + 2 H+ --> Mn2+ + H2S(g) At 25 C the solubility product constant, Ksp, for MnS is 5 x 10-15 and the acid dissociation constants K1 and K2 for H2S are 1 x 10-7 and 1 x 10-13, respectively. What is the equilibrium constant for the reaction represented

*asked on January 13, 2013* -
## college

For the reaction P4(s) + O2(g) = P4 O10(s) Identify the limiting reaction mixture conataining 1.00 mol each of P4 and O2

*asked on March 10, 2010* -
## chem.

How much heat would be required to warm Earth's oceans by 1.0 degree celsius ? Assume that the volume of Earth's oceans is 137x10^7 km^3 and that the density of seawater is 1.03 g/cm^3. Also assume that the heat capacity of seawater is the same as that of

*asked on February 5, 2010* -
## science

how to make an american flag 3-D with materials but not on paper

*asked on February 5, 2009* -
## elementary

perimeter for a 3ft x 3 in answer in ft and in inches

*asked on February 5, 2009* -
## chemistry

how much oxygen is produced by heating 20g of mercury (II) oxide if 18.6g of mercury is produced?

*asked on March 24, 2008* -
## Math

Which ratio is equivalent to 3/15 A) 1/3 B) 3/5 C) 1/5***** D) 15/3

*asked on November 13, 2018* -
## physics

Machines A, B, and C do the same amount of work, but they each take a different amount of time. Machine A takes more time as compared to machine C. Machine B takes the maximum time to do the same amount of work. Which machine expends the most power doing

*asked on May 21, 2017* -
## Physics

You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 5.50 m/s. You jump at an angle of 29.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.34 m away from you. If

*asked on September 27, 2016* -
## Chemistry

when potassium in water are combined they produced 4000.0 kJ of heat along with potassium hydroxide and hydrogen gas. how much energy would be produced if you dumped a 1.00 kg chunk of potassium into a swimming pool? s this reaction what is the enthalpy

*asked on October 19, 2015* -
## Chemistry

When methane is combusted with excess oxygen 891 kJ of energy is produced start with 100g of methane. how much energy is produced? is this reaction endothermic or exothermic? Also provide enthalpy change for this reaction: CH4 + 2O2 (arrow)= CO2 + H2O +

*asked on October 19, 2015* -
## Chemistry

I have to do a lab on equilibrium, where you have to transfer water with two different sized straws, and answer questions based on that the questions are about the significance of where there is a flat line on the graph, and the significance of the point

*asked on March 19, 2015* -
## Math

Kelly was helping a friend with cleaning her bedroom. Kelly spent two hours and cleaned 80% of the room. what fraction of the room did Kelly help clean? How would I solve this - divide?

*asked on January 21, 2015* -
## Calculus

Find al points where tangent lines to: (x^2+y^2)^(3/2) = sqrt(x^2+y^2) + x is either horizontal or vertical.

*asked on October 26, 2014* -
## Calculus

Find al points where tangent lines to: (x^2+y^2)^(3/2) = sqrt(x^2+y^2) + x is either horizontal or vertical.

*asked on October 26, 2014* -
## Calculus

The graph of the equation x2 − xy + y2 = 9 is an ellipse. Find the lines tangent to this curve at the two points where it intersects the x-axis. Show that these lines are parallel.

*asked on October 26, 2014* -
## Science

-Describe the zero sum rule -True of False: The formula for the nitride ion is N^(-3) -True of False: The stock system shows the charge on the negative ion Answer this Question

*asked on October 1, 2014* -
## math

1. Finding the Counterfeit Coin. You have 5 coins. You know that one of them is counterfeit and weighs less than the others. Suppose also that you have a balance scale. Is there a strategy for finding the counterfeit coin using the balance scale only

*asked on September 30, 2014* -
## History.

Do you think the CRTC's restriction on media freedom were reasonable in the 1960's? DO you think they are reasonable now? Explain.

*asked on May 15, 2014* -
## chemistry

determine the density in copper at 1305K. 1 mole of vacancies in copper is 104kJ. The answer I calculated this time is 8.4572*10^22. I am not sure if this correct. Thanks.

*asked on November 17, 2013* -
## Physics

6) The relationship between force and acceleration is given by Newton’s 2nd Law: Fnet = ma. In this case this becomes: !@#$%^&p – Ff = ma. a. Rearrange this formula to fit the equation of a straight line: y = mx + b b. What does the y‐intercept

*asked on October 30, 2013* -
## chem

Predict out of which of the following would a dialysis bag be permeable to? Potassium Ions= DNA= Sucrose= No? Starch =No? Sulfate Ion=yes Chloride Ion=yes Protein=No I'm not sure about potassium ions or DNA though.

*asked on April 18, 2012* -
## SOCIAL STUDIES

HOW OLD IS THE GREAT BARRIER REEF?

*asked on April 16, 2012* -
## grade 10 chemistry

factor labels 200ml per hour to kl per year

*asked on February 29, 2012* -
## Algebra

what is the square root of 5 divided by 2 times the square root of 125?

*asked on October 23, 2011* -
## Chemistry question Please help

Consider the expected conductivities of CaCl2(aq) and Ca(OH)2(aq). Which of these can be expected to have the higher conductivity. Explain your reasoning.

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

In a circle, the measure of an inscribed angle is one-half the measure of its intercepted arc. Is this true or false?

*asked on January 17, 2011* -
## math

substitution 4x + 3y = 3 7x - 9y = 6

*asked on January 13, 2011* -
## math

solve with substitution 5x - y=-1 15x=2y

*asked on January 12, 2011* -
## Chemistry

what would an open manometer look like in which the pressure of the gas sample is 34.5 kPa higher than the atmosphere?

*asked on January 6, 2011* -
## science 6th grade

Statement: Most compounds that produce this in aqueous solution are ionic. Does this statement refer to an acid or a base or both?

*asked on January 2, 2011* -
## math

N and P are integers greater than 1 5N is the square of a number 75NP is the cube of a number the smallest value for N+P IS what? i cant figure it out, please help thank you so much

*asked on October 4, 2010* -
## Chemistry

When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 11.0 oz drink from 75 degree Fahrenheit to 37 degree Fahrenheit, if the heat capacity of the drink is 4.18 J/g degree celsius ? (Assume that the heat transfer is 100 %

*asked on February 5, 2010* -
## physics

Infrared telescopes are very sensitive to increases in temperature. If the temperature rises above a certain point, the telescope is blinded because it becomes a bright source of infrared light itself (if that doesnft immediately make sense, it is

*asked on December 9, 2008* -
## Physics URGENT!!!

At a certain location, the horizontal component of the earth's magnetic field is 2.5 x 10^-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances its weight. Find the speed of the proton.

*asked on November 9, 2007* -
## government

these are some questions i am having trouble with: 1. what margin is required to ratify treaties 2. where in the constitution is the ratification power described 3. what body has the power to impeach the president 4. what vote is required to impeach 5.

*asked on September 23, 2007* -
## science

Distinguish between high-energy and low-energy You have to put this in context. We don't do homework for you, but will be happy to critique your thinking. You have to put this in context. We don't do homework for you, but will be happy to critique your

*asked on July 6, 2007* -
## Easy Chemistry

How many valence electrons does molybdenum have? it depends, it can either have valence electrons of 6,5,4,3,2.

*asked on March 29, 2007* -
## trig

How do I find 1 positive and 1 negative coterminal angle for: 1) -460 degrees 2) 11pi/4 3) -12pi/5 WERE DO YOU GO TO GOOGLE BECAUSE I TIRED!

*asked on January 17, 2007* -
## Help w/Quattro Formula

Am getting frustrated w/failing to get Quattro Pro formula right. Here's what I'm looking for: Col. A = Base period number Col. B = Given number this current period. Formula I need: If B >= A, what is %? (Example: A=20, B=30, the # I want should read 50.0,

*asked on July 20, 2006* -
## Maths

A glass is 4/7 full then 70 cm3 of orange juice is poured in the glass is now 3/4 full what is the total volume of the glass?

*asked on January 29, 2020* -
## Math

I am in even 3 digit number I am less than 200 but more than 190 my son is 18 what is my number

*asked on August 27, 2019* -
## pre-calc

A dog is attached to a 2121-foot rope fastened to the outside corner of a fenced-in garden that measures 1818 feet by 2323 feet. Assuming that the dog cannot enter the garden, compute the exact area that the dog can wander.

*asked on July 12, 2019* -
## math

7 1/2-1 9/10 what is the difference? PLZ Help!!!!!

*asked on November 2, 2018* -
## physics

If you pull one end of the rope 1.4 downward with a 46- force, find the height you can lift a 170- load.

*asked on October 9, 2018* -
## Math

Use benchmark to estimate the sum, difference, or product 14/16 + 1/5 A. 2 B. 0 C. 1/2 D. 1

*asked on October 3, 2018* -
## Math please help me quickly

1/4 divided by 3/8 and I'm so confused because I know it's division but the answers are A.1/3 B.2/3 C.3/4 D.3/8 and I just need help

*asked on September 25, 2018* -
## Social Studies

As a result of their large oil supplies many Middle Eastern economies rely on what in oder to grow? A) automobile manufacturing B) government regulations C) exports D) tariffs

*asked on September 24, 2018* -
## Math please help

So I have this question and I don't understand Find the missing number. 32/52 ?/13 A.) 9 B.) 4 C.) 7 D.) 8 so can anyone help me please

*asked on September 14, 2018* -
## college chemistry

How many grams of NaCN are needed to react with 50.0 g of MgCl2?

*asked on February 18, 2017* -
## Statistics

A VP of manufacturing claims that more than 3% of items produced using a certain assembly line are defective. A random sample of 400 items is selected. At the 10% level of significance, which of the following would be part of the standardized decision

*asked on October 25, 2016* -
## us history

You have OREGON FEVER! On your voyage west, there are many things you must plan for if you plan to make it to your final destination. Choose one of the following to complete and submit to Mrs. Sterling through webmail for extra credit. • You are

*asked on April 15, 2016* -
## laney college

The following questions are based on the “Mt. Dome, California,” quadrangle (Figure 33-2 found on page 228 of the Laboratory Manual; enlarged to scale 1:48,000; contour interval 40 feet) and the stereogram of the same

*asked on March 23, 2016* -
## English assignment

I need to make a thesis statement about racism based on my two books. The two books that I chose to do was: secret life of bees and black like me. I am having trouble making a thesis. I'll give you all the information about the racism in these two books.

*asked on January 13, 2016* -
## Chemistry

2Fe2O3 + 6C + 3O2 -> 4Fe + 6Co2 What mass of Fe2O3 present is needed to produce 15 of iron? what mass of CO2 is released when 15g of iron is produced?

*asked on October 18, 2015* -
## Chemistry

Element X has the highest first electron affinity in its period; the ground state electron configuration of it's most common ion is [Kr] 5s^2 4d^10 5p^6 a Element Y is the second largest element in it's period; it's valence electrons are in orbital(s) that

*asked on October 18, 2015* -
## prealgebra

translate; the quotient of 41 and the product of a number and 35

*asked on September 17, 2015* -
## physics

PLEASE HELP! When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘

*asked on September 8, 2015* -
## phyics

When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘ angle with the

*asked on September 6, 2015* -
## physics

When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the ball when it left the bat? Assume the ball was hit 1.2 m above the ground and its path initially made a 39 ∘ angle with the

*asked on September 6, 2015* -
## Physics

I really need help with this question, i've found that a texbook said fourth hand, but I don't know if that's a thing Which rule is used to find the direction of force produced by electromagnetic induction? a. First right-hand rule b. Second right-hand

*asked on June 3, 2015* -
## Physics

I need some help with a few multiple choice quadroons that I don't understand 1.EMF is best described as a(n) a. electric force. b. energy measure. c. charge flow rate. d. potential difference. 2. Which rule is used to find the direction of force produced

*asked on June 3, 2015* -
## Math

The parking lot has 5/6 as many vans as trucks. What equation can be use to show the number of vans?

*asked on May 28, 2015* -
## geometry

the following system of equations bounds a region. If the region is rotated about the line x=0, what is the shape of the resulting solid figure? y=-2x+4 X=0 Y=0 Y=2

*asked on March 24, 2015* -
## physics

We have to do a lab in physics where we research and write on real life applications of momentum, the guidelines we have are Research Assignment: Application of Momentum in Real-Life Situations Task: Choose any real-life situation where the concept of

*asked on March 24, 2015* -
## Math

Davida bought a pair of earrings, each in the shape of an isosceles triangle with equal side lengths of 24 mm and a base length of 16 mm. She used one earring to make another pair of earrings, similar in shape, with the base length equal to 11 mm. What is

*asked on February 27, 2015* -
## Chemistry

what is the trend in the atomic radii as the atomic number increases across a period? What is the exception to this trend? I know the radius decreases as you go from left to right, but I can't figure the exception, I read somewhere that it's the noble

*asked on February 23, 2015* -
## Chemistry

what is the trend in the atomic radii as the atomic number increases across a period? What is the exception to this trend? I know the radius decreases as you go from left to right, but I can't figure the exception, I read somewhere that it's the noble

*asked on February 23, 2015* -
## Chemistry

what is the trend in the atomic radii as the atomic number increases across a period? What is the exception to this trend? I know the radius decreases as you go from left to right, but I can't figure the exception, I read somewhere that it's the noble

*asked on February 20, 2015*