Shaun
Popular questions and responses by Shaun
CHEMISTRY
Consider the reaction N2+O2>2NO with Delta H=43.2kcal. When 50.0g of N2 react with an excess of oxygen, how much heat is generated/consumed? I know that this is an endothermic reaction b/c of the + delta H, is there some sort of formula to use here? I
asked on March 8, 2014 
math
the integer 49 can be written as the sum of smaller perfect squares in a variety of ways. one such way includes six terms: 25+9+4+1+1. if each term has a value between 0 and 49,what is the fewest number of perfect square terms that can be added together
asked on October 8, 2012 
math
how many prime positive integers are divisors of 555?
asked on September 16, 2012 
math
three consecutive primes are summed. when the sum is squared, the result is 72,361. what is the largest of the three primes?
asked on September 16, 2012 
chemistry
calculate the energy, in joules and calories required to heat 25.0g of water form 12.5 deg. celcius to 25.7 deg. celcius i know the answer just need to see how to do it especially the calories
asked on January 22, 2012 
Functions (Math)
The point P(2, 5) is located on the terminal arm of an angle θ in standard position. a) Draw and label an appropriate diagram. Remember to label θ and all the sides of the triangle. b) Determine the exact values of the primary trigonometric ratios for
asked on April 24, 2017 
math
a 12slice pizza was made with only pepperoni and mushroom toppings, and every slice has at least one topping. only six slices hav pepperoni, and exactly ten slices have mushrooms. how many slices have both pepperoni and mushrooms?
asked on September 17, 2012 
Algebra
Norman and Suzanne own 42 shares of a fast food restaurant stock and 66 shares of a toy company stock. At the close of the markets on a particular day in 2004, their stock portfolio consisting of these two stocks was worth $1944.00. The closing price
asked on October 22, 2017 
physics
Two point charges of the same magnitude but opposite signs are fixed to either end of the base of an isosceles triangle. The electric field at the midpoint M between the charges has a magnitude EM. The field directly above the midpoint at point P has a
asked on February 14, 2013 
physics
An electric field of 210000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of 6.2C at this spot?
asked on February 14, 2013 
math
what is the number of factors of the product 126*216?
asked on September 17, 2012 
math
how many positive integers less than or equal to 100 have a prime factor that is greater than 4?
asked on September 12, 2012 
Economics
When Burton Cummings graduated with honors from the Canadian Trucking Academy, his father gave him a $350,000 tractortrailer rig. Recently, Burton was boasting to some fellow truckers that his revenues were typically $25,000 per month, while his operating
asked on April 4, 2010 
Math
A monument has a base and a statue. The base is a rectangular prism that measures 4 feet by 6 feet by 2 feet. The statue is a cube with edges that are 2 feet long. What is the volume of the monument?
asked on October 26, 2016 
Physics
The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on Earth). Suppose a car is designed to accelerate at this rate. How much time would be required for the car to accelerate from rest to 61.8 miles
asked on May 28, 2014 
physics
A block of mass 4.44 kg lies on a frictionless horizontal surface. The block is connected by a cord passing over a pulley to another block of mass 6.55kg which hangs in the air , as shown above. Assume the cord to be light (massless and weightless) and
asked on October 5, 2013 
Math
Dress rehearsal of the play was attended by 142 people. Opening night was attended by 238 people. How many people saw the two shows in all?
asked on January 30, 2013 
math
Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine. sin^6(x) Answer=__________ ~Thank you.
asked on November 16, 2010 
math
Fivetwelfths of my salary was spend on food, then I gave 3/7 of the remainder to my sister and had 856 pesos left. How much did I spend for food?
asked on September 7, 2016 
Chemistry
Write the formula of CH3NH+3 conjugate base. and Indicate whether the conjugate base of CH3NH+3 is a strong base, a weak base, or a species with negligible basicity.
asked on July 25, 2013 
math
Maribel's city imposes a tax that is 40% of the state tax she pays. Her taxable income is $198.50 per week. Her state imposes tax at a rate of 5%. How much state and local tax is withheld from her weekly pay?
asked on May 16, 2013 
math
what is the least natural number that has exactly five distinct, positive factors?
asked on September 16, 2012 
social studies
what river name comes from choctaw word meaning "long river"
asked on August 29, 2010 
Algebra 2
Find the value(s) of t for which the vectors are parallel. a = (t, t+2) b = (23t, t) I managed to work it down to t = 2k  3t  6, but I don't know what to after that.
asked on August 23, 2018 
Physics
A coal power plant with 30% efficiency burns 10 million kilograms of coal a day. What is the power output of the plant and at what rate is thermal energy being discarded by the plant?
asked on August 17, 2018 
science
A driver takes off with a speed of 10m/s from a 5m high diing board at 30° above the horizontal how much later doesh she strike the water A rescue plaNe carries a package of emergency supply to be dropped at a point that is very close to a target the
asked on February 26, 2018 
Maths
1) Suppose of the 4,000 freshmen at a college everyone is enrolled in a mathematics or an English class during a given quarter. If 2,000 are enrolled in a mathematics class, and 3,000 in an English class, how many are enrolled in both a mathematics class
asked on April 16, 2017 
Math
Christina spent a quarter of her savings on piano lessons. She then babysat for $10 per hour and babysat for a total of 20 hours. She deposited that money in her account. After paying for piano lessons, Christina still had $300 in her savings account. How
asked on December 1, 2016 
Algebra
Four times the sum of 6 and a number is 6 increased by the same number. Find the number
asked on December 1, 2016 
Math
The original price of a comic book is, the tax is 6%. What is the selling price for the comic book?
asked on November 8, 2016 
Math
The measure of one angle is 7 times the measure of its complement. What is the measure of each angle?
asked on June 12, 2016 
algebra
subtract 2x^2+5x10 3x^2x+9 then place the answer in the proper location on the grid
asked on April 30, 2016 
Math
A scale drawing of the floor of a theater has a scale factor of 18. Mark says that he can use this information and any length on the scale drawing to find the corresponding length and the actual theater. He says that he can also use this information and
asked on April 9, 2016 
math
a rectangle has an area of 20 square feet. A similar rectangle has an area of 180 sq feet. What is the ratio of the area of these similar rectangles? Is it 9 or maybe 3000??? Not sure. Please help....
asked on December 11, 2014 
physics
What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is 0.24? a_{max} =
asked on February 21, 2014 
Physics  PLEASE HELP
A 25kg uniform ladder 10m is leaning against a frictionless wall. The ladder is making an angle of 32° to the ground. What is the magnitude of the total force exerted on the ladder by the ground? 675 N 462 N 245 N 543 N 314 N
asked on November 4, 2013 
Physics
A 30kg uniform ladder 12 m long is leaning against a frictionless wall at an angle of 50 degrees above the horizontal. A 45kg boy climbs 5.0 m up the ladder. What is the magnitude of the force exerted by the ladder on the wall?
asked on November 4, 2013 
Math
In the expression A(x+5)+2(−Bx+2), the coefficient of x is 17 and the constant term is 219. What is the value of A−B?
asked on September 22, 2013 
Math
5 times the least of three consecutive odd numbers is 35 more than twice the sum of the greater two. What is the sum of the three consecutive odd numbers?
asked on September 22, 2013 
Algebra
5 times the least of three consecutive odd numbers is 35 more than twice the sum of the greater two. What is the sum of the three consecutive odd numbers?
asked on September 22, 2013 
Math
In the expression A(x+5)+2(−Bx+2), the coefficient of x is 17 and the constant term is 219. What is the value of A−B?
asked on September 22, 2013 
English
I"m having difficulty correctly addressing the below sentences. The assignment is to fix, if needed, sentence fragments. At first and second glance, I feel these are correct: With machetes, the explorers cut their way through the tall grasses to the edge
asked on July 17, 2013 
Criminal Justice
Uncle Bob's vacation discuss the possible communications methods between the officer and his/her agency
asked on June 8, 2013 
Chemistry
How many grams of co2 are in 3.92 times 10 to the 24th molecules
asked on April 11, 2013 
MATH!!
Andy, Barbara and Chrisy play a game. Their probabilities of winning are 1/2, 1/3, and 1/6 respectively. What is the probability that each wins exatly one of the first three games played? Express your answer as a common fraction.
asked on April 2, 2013 
physics
Two spherical objects are separated by a distance of 1.41 × 10^3 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons.
asked on February 14, 2013 
physics
An electrically neutral model airplane is flying in a horizontal circle on a 2.0m guideline, which is nearly parallel to the ground. The line breaks when the kinetic energy of the plane is 50 J. Reconsider the same situation, except that now there is a
asked on February 14, 2013 
Math
In Ms.Ramirez's class, there are 28 students. They sit in 4 rows. How many students are in each row?
asked on February 11, 2013 
3rd grade Math
Explain It How can you suse a multiplication fact to find a division fact?
asked on February 7, 2013 
Math
Explain It Franklin says that if he divides 50 by 5, he will get 10. Jeff says he should get 9. Who is correct? Explain.
asked on February 6, 2013 
Math
Ron painted part of a tiled section of his bathroom floor. the whole section was shaped like a rectangle. There were 35 square tiles in the section. How many tiles were in each row? There are 7 rows
asked on January 30, 2013 
Math
Ron painted part of a tiled section of his bathroom floor. the whole section was shaped like a rectangle. There were 35 square tiles in the section. How many tiles were in each row?
asked on January 30, 2013 
history
3. Among members of George Washington's cabinet, __________ had a pessimistic view of human nature and a dread of democratic excess. A. Hamilton B. Adams C. Jefferson D. Marshall
asked on January 30, 2013 
Math
Explain It Tamara says that 15/3=5. Is she correct? Explain
asked on January 30, 2013 
Math
Explain It Ron and Pam each have 20 pennies. Ron will put his pennies into 4 groups. Pam will put her pennies into 5 groups. Who will have more pennies in each group? Explain.
asked on January 23, 2013 
math
Sara needs help solving the problem 11x8. Which pattern can she use to help her find the product?
asked on January 15, 2013 
Math
Explain it How can you use a pattern to find the product of 5x12?
asked on January 13, 2013 
math
write a multiplication story for 9x8. include the product in your story.
asked on January 11, 2013 
math
there exists a two digit integer, "AB", such that AB=2(A+B)squared. what is the value of the product A x B?
asked on October 8, 2012 
math
what is the least positive integer with exactly 10 factors?
asked on September 17, 2012 
math
what is the least whole number with exactly eleven factors?
asked on September 17, 2012 
math
how many factors of 1800 are multiples of 10?
asked on September 17, 2012 
math
five cards are chosen at random from a standard deck of 52 cards. what is the the probability that all five cards are the same suit? express your answer as a common fraction.
asked on September 17, 2012 
math
the sum of the squares of four consecutive positive integers is 734. what is the smallest of the integers?
asked on September 17, 2012 
math
the product of three consecutive positive integers is 35,904. what is the sum of the three integers?
asked on September 17, 2012 
math
calculate the number of distinct whole number factors of each number...... factors of 18,multiples of 3=
asked on September 17, 2012 
math
what is the sum of the two least natural numbers that each have exactly six distinct,positive factors?
asked on September 16, 2012 
math
what is the least natural number that has exactly four distinct positive factors?
asked on September 16, 2012 
math
anderson will roll two standard six sided dice once. what is the probability that the two numbers rolled will be the same? express your answer as a common fraction
asked on September 16, 2012 
Social studies
Which century did the industrial revolution start?
asked on March 9, 2012 
chemistry
a 10.0L ballon contains helium gas at a pressure of 655mmHg, what is the new pressure, in mmHg, of the helium gas at 20.0L, if no change in temp or amount of gas
asked on March 1, 2012 
Chemistry
0.0337g of a volatile liquid when vaporized completely at 100Pa and 300K occupied a volume of 20cm3. When this volume of vapor was completely burnt in an excess of oxygen, 40cm3 of carbon dioxide and 20cm3 of water vapor were formed. All volumes being
asked on February 18, 2012 
Chemistry
If a liter of a buffer is prepared with a final concentration of .3M monosodium phosphate and .5M disodium phosphate, what is the pH of this buffer? (Hint: Which is conjugate acid (HA) and conjugate base (A)? What's the pKa for this particular pair of HA
asked on July 6, 2011 
Math
Use an addition or subtraction formula to write the expression as a trigonometric function of one number, and then find its exact value. (tan(π/2)+tan((2π)/3)) / (1tan(π/2)tan((2π)/3)) Answer=__________ Exact value answer=_________ ~Thank you.. I
asked on November 15, 2010 
physics
An object is dropped onto the moon (gm = 5 ft/sec2). How long does it take to fall from an elevation of 250 ft.?
asked on October 19, 2010 
math
LCM of 2t, (t2) and t(t2)
asked on October 10, 2010 
social studies
Thank you for every single question I've asked you. You're a great teacher Ms.Sue. I learned a lot from you. May god bless you.But, before I go I want to make sure my answers are right for this qustion. Here they go, Louisiana, Texas, Alabama, and
asked on August 29, 2010 
social studies
My last time if you just answer this queston. Name two states that extend further south than louisiana.
asked on August 29, 2010 
social studies
No url please. what are all the states that the 33rd parallel passes through?
asked on August 29, 2010 
social studies
I still didn't get help on this question. Name two states that extend further south than louisiana. No url please.
asked on August 29, 2010 
social studies
Thank you for all your help.In which direction would you go to Louisiana to pennyslvania? Please no url.
asked on August 29, 2010 
social studies
What river flows to lake borgne?
asked on August 29, 2010 
social studies
what river begins in new mexico?
asked on August 29, 2010 
social studies
What two states extend further south in louisiana?
asked on August 29, 2010 
social studies
what states border Louisiana?
asked on August 29, 2010 
social studies
what states border Louisiana? what two states extend further south than Louisiana? what tates have a Gulf of Mexico coastline? Is Louisiana closer to nevada or virginia? What direction would you go from Louisiana to pennyslvania? What direction would you
asked on August 29, 2010 
8th grade math
The area of Manhattan Island is 641, 000,000 square feet. According to legend, the Indians sold it to the Dutch for $24. Estimate the area that was purchased for one cent.
asked on August 26, 2010 
7th grade
The contest _ea__i_e is tommorow.
asked on August 6, 2009 
health
components of Health communications
asked on September 10, 2008 
Chem
Calculate the number of moles and number of grams of solute in 250 mL of a 0.10M CaCl2.
asked on April 21, 2008 
Chemistry
The theoretical percent of Copper (II)Oxide is 79.9%. What are two reasons why the percent of Copper in Copper (II) may vary from 79.9%
asked on March 17, 2008 
Middle School Algerbra
I need to write an algebraic expresion for "Y Divided among X" What does among X mean
asked on October 2, 2007

world history
They influenced the caste system and Sanskrit,Hinduism and the steel plow
posted on December 4, 2018 
MATHS
3.6
posted on September 20, 2018 
English
#5 is incorrect. "It" cannot refer to a family. #2 is correct but unnecessarily wordy, because we already know it's about her family, so "they" is enough. #3 is grammatically correct, but doesn't directly answer the question. To sum up, all are correct
posted on August 23, 2018 
English
If there's only supposed to be one answer, I'd say 2 is the best.
posted on August 23, 2018 
Hayden
Your answers look right to me.
posted on August 23, 2018 
Math
its 87.28 i just took it too it is correct it said 11:16am 5/28/2018
posted on May 28, 2018 
math
Medline please explain your answer in detail in not getting it
posted on February 8, 2018 
Algebra
I think I got it, if someone wants to check it for me? Fast food was $34.50 Toy company was $7.50
posted on October 22, 2017