# Shaun

Popular questions and responses by Shaun
1. ## 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

2. ## 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

3. ## math

how many prime positive integers are divisors of 555?

4. ## math

three consecutive primes are summed. when the sum is squared, the result is 72,361. what is the largest of the three primes?

5. ## 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

6. ## 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

7. ## math

a 12-slice 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?

8. ## 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

9. ## 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

10. ## 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?

11. ## math

what is the number of factors of the product 126*216?

12. ## math

how many positive integers less than or equal to 100 have a prime factor that is greater than 4?

13. ## Economics

When Burton Cummings graduated with honors from the Canadian Trucking Academy, his father gave him a \$350,000 tractor-trailer rig. Recently, Burton was boasting to some fellow truckers that his revenues were typically \$25,000 per month, while his operating

14. ## 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?

15. ## 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

16. ## 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

17. ## 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?

18. ## 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.

19. ## math

Five-twelfths 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?

20. ## 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.

21. ## 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?

22. ## math

what is the least natural number that has exactly five distinct, positive factors?

23. ## social studies

what river name comes from choctaw word meaning "long river"

24. ## Algebra 2

Find the value(s) of t for which the vectors are parallel. a = (t, t+2) b = (2-3t, t) I managed to work it down to t = 2k - 3t - 6, but I don't know what to after that.

25. ## 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?

26. ## 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

27. ## 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

28. ## 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

29. ## Algebra

Four times the sum of 6 and a number is 6 increased by the same number. Find the number

30. ## Math

The original price of a comic book is, the tax is 6%. What is the selling price for the comic book?

31. ## Math

The measure of one angle is 7 times the measure of its complement. What is the measure of each angle?

32. ## algebra

subtract 2x^2+5x-10 3x^2-x+9 then place the answer in the proper location on the grid

33. ## 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

34. ## 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....

35. ## 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} =

A 25-kg uniform ladder 10-m 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

37. ## Physics

A 30-kg uniform ladder 12 m long is leaning against a frictionless wall at an angle of 50 degrees above the horizontal. A 45-kg boy climbs 5.0 m up the ladder. What is the magnitude of the force exerted by the ladder on the wall?

38. ## 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?

39. ## 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?

40. ## 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?

41. ## 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?

42. ## 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

43. ## Criminal Justice

Uncle Bob's vacation discuss the possible communications methods between the officer and his/her agency

44. ## Chemistry

How many grams of co2 are in 3.92 times 10 to the 24th molecules

45. ## 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.

46. ## 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.

47. ## physics

An electrically neutral model airplane is flying in a horizontal circle on a 2.0-m 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

48. ## Math

In Ms.Ramirez's class, there are 28 students. They sit in 4 rows. How many students are in each row?

Explain It How can you suse a multiplication fact to find a division fact?

50. ## 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.

51. ## 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

52. ## 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?

53. ## 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

54. ## Math

Explain It Tamara says that 15/3=5. Is she correct? Explain

55. ## 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.

56. ## math

Sara needs help solving the problem 11x8. Which pattern can she use to help her find the product?

57. ## Math

Explain it How can you use a pattern to find the product of 5x12?

58. ## math

write a multiplication story for 9x8. include the product in your story.

59. ## 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?

60. ## math

what is the least positive integer with exactly 10 factors?

61. ## math

what is the least whole number with exactly eleven factors?

62. ## math

how many factors of 1800 are multiples of 10?

63. ## 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.

64. ## math

the sum of the squares of four consecutive positive integers is 734. what is the smallest of the integers?

65. ## math

the product of three consecutive positive integers is 35,904. what is the sum of the three integers?

66. ## math

calculate the number of distinct whole number factors of each number...... factors of 18,multiples of 3=

67. ## math

what is the sum of the two least natural numbers that each have exactly six distinct,positive factors?

68. ## math

what is the least natural number that has exactly four distinct positive factors?

69. ## 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

70. ## Social studies

Which century did the industrial revolution start?

71. ## 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

72. ## 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

73. ## 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

74. ## 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)) / (1-tan(π/2)tan((2π)/3)) Answer=__________ Exact value answer=_________ ~Thank you.. I

75. ## 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.?

76. ## math

LCM of 2t, (t-2) and t(t-2)

77. ## 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

78. ## social studies

My last time if you just answer this queston. Name two states that extend further south than louisiana.

79. ## social studies

No url please. what are all the states that the 33rd parallel passes through?

80. ## social studies

I still didn't get help on this question. Name two states that extend further south than louisiana. No url please.

81. ## social studies

Thank you for all your help.In which direction would you go to Louisiana to pennyslvania? Please no url.

82. ## social studies

What river flows to lake borgne?

83. ## social studies

what river begins in new mexico?

84. ## social studies

What two states extend further south in louisiana?

85. ## social studies

what states border Louisiana?

86. ## 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

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.

The contest _ea__i_e is tommorow.

89. ## health

components of Health communications

90. ## Chem

Calculate the number of moles and number of grams of solute in 250 mL of a 0.10M CaCl2.

91. ## 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%

92. ## Middle School Algerbra

I need to write an algebraic expresion for "Y Divided among X" What does among X mean

1. ## world history

They influenced the caste system and Sanskrit,Hinduism and the steel plow

posted on December 4, 2018
2. ## MATHS

3.6

posted on September 20, 2018
3. ## 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
4. ## English

If there's only supposed to be one answer, I'd say 2 is the best.

posted on August 23, 2018
5. ## Hayden

posted on August 23, 2018
6. ## Math

its 87.28 i just took it too it is correct it said 11:16am 5/28/2018

posted on May 28, 2018