1. Chem

Bromine has two natural occurring isotopes (Br-79 and Br-81) and has an atomic mass of 79.904 amu. The mass of Br-81 is 80.9163 amu, and its natural abundance is 49.31%. Calculate the mass and natural abundance of Br-79.

2. Physics

1. Question: Consider two planets with uniform mass distributions. The mass density and the radius of planet 1 are p1 and R1, respectively, and those of planet 2 are p2 and R2. What is the ratio of their masses? Ans: M1/M2 = (p1/p2)(R1/R2)^3...I got this

3. conflict and negotiation

A fellow supervisor usually argues about an issue before arriving at a decision. Knowing this a typical of this person's behavior. If you were the boss how would handle your next confrontation?

4. english

11-15: Read the passage and answer the questions that toflow on the basis of the information provided in the passage. Multitasking by Windows Multitasking lots you run several applications simultaneously. While you use a word processor in the foreground,

5. englissh

16-20: Read the passage and answer the questions that follow on the basis of the information provided in the passage. Dynamic Link Libraries Windows provides several files called dynamic link libraries (DILLS) that contain collections of software code that

6. Trig

A soccer goal is 24 feet wide. Point A is 40 feet in front of the center of the goal. Point B is 40 feet in front of the right goal post. Which angle is larger A or B? How much larger?

7. physics

A body at rest is given an initial uniform acceleration of 8m/s2 for 30s after which the acceleration is reduced to 5m/s2 for the next twenty seconds. The body maintains the speed attained for 60s, after which it is brought to rest in 20s. 1. Draw the

8. MATH

A MAP HAS THE SCALE OF 1 INCH = 80 MILES. WHAT IS THE ACTUAL DISTANCE , IN MILES, BETWEEN TWO TOWNS THAT ARE 4 1/2 INCHES APART ON THE MAP? 1. 280 2. 320 3. 324 4. 360 5. 400

9. math

marie purchased a 2-pound box of dog food with a 75-cents-off coupon. she also mailed in the box top to receive a company rebate for \$1.00. if p represents the original cost, what did she pay for the dog food after receiving all rebates ?

10. math

what is the average weekly food expense of the johnson family during a 4-week period in which they spent \$72.84, \$61.20, \$75.48, and \$68.76 for their weekly grocery shopping?

11. programming

how do I write a pseudocode to find and display the largest list of positive numbers entered by the user. The user should indicate that he/she has finished entering numbers by enter a

12. physics

At highway speeds, a particular automobile is capable of an acceleration of about 1.6 m/s2. At this rate, how long does it take to accelerate from 81 km/h to 117 km/h?

13. Math

3. A processor makes two components, A and B, which are then packaged together as the final product (each product sold contains one A and one B). The processor can do only one component at a time: either it can make As or it can make Bs. There is a setup

14. physics

A small plastic sphere with a charge of -5.0 is near another small plastic sphere with a charge of -15 . Part A - If the spheres repel one another with a force of magnitude 8.3×10−4 , what is the distance between the spheres? Express your answer using

15. Geometry

Suppose the coordinate of P is 2, PQ = 8, and PR = 12. What are the possible coordinates of the midpoint of the given segment?

16. math

vickie earns \$20,000 a year as a bookkeeper. if she receives a raise of 2%, how could her new total salary be represented? 1. 0.02(\$20,000) 2. \$20,000/0.02 3. 0.02(\$20,000)+ 0.02 4. 0.02(\$20,000)+ \$20,000 5. \$20,000/0.02 + \$20,000

17. Chemistry

Using John Dalton's law of multiple proportions. There are two different compounds of sulfur and fluorine. In SF6, the mass of fluorine per gram of sulfur is 3.55 gF/gS. IN the compound, SFx, the mass of fluorine per gram of sulfur is 1.18 g F/g S. What is

18. History

Can someone give me a few examples of economic factors/conditions determining foreign policy decisions. The one example I have so far is the economic crash in 2008 triggering a outcry for economic relief. People no longer cared about the iraq war.

19. english

1) You can borrow my car -----------------------the end of the month A) until B) by C) in D) for 2) Most scholars consider 1887 to be the beginning of industrialization ----------- wine and brandy distillation in the country. A) of 8) in C) for D) and 3)

20. Physics

A car traveling at a constant speed of 33 m/s passes a trooper hidden behind a billboard. One second later the trooper starts the car with a constant acceleration of 2.62 m/s^2. How long after the trooper starts the chase does he overtake the speeding car?

21. mathematics

which of the following expressions shows the equation to use in finding the dimensions of a cube n by n by n with a volume of 125? 1. n3 =125 2. n2 =125 3. 3n =125 4. n =125 __ 3 5. not enough information is given

22. Chemistry

how many grams of sucrose are needed to make 100 ml of a 10^-2 Molarity sucrose solution?

23. Physics

A book is moved once around the edge of a tabletop with dimensions 1.75m x 2.25m. If the book ends up at the initial position, what is its displacement? If it completes its motions in 23s, what is its average velocity? What is its average speed?

24. Physics

A window is 1.50m high. A stone falling from above passes the top of the window with a speed of 3m/s. When will it pass the bottom of the window?

25. Physics

A car traveling at a constant speed of 33 m/s passes a trooper hidden behind a billboard. One second later the trooper starts the car with a constant acceleration of 2.62 m/s^2. How long after the trooper starts the chase does he overtake the speeding car?

26. nursing

What is the first pass effect? What routes are affected by this,which routes are not?

27. Physics

Two balls are dropped from rest from the same height. One of the balls is dropped 1.0 s after the other. What distance separates the two balls 2.00 s after the second ball is dropped?

28. basic chem

1)an atom has a mass number of 27 and 14 neutrons. what is the atomic number of this atom? 2)The atomic number of fluorine is 9. What is the mass # of a fluorine atom with 8 neutrons?

29. maths

Two trains are on the same track a distance 300 km apart heading towards one another, One at a speed of 150 km/h and other at a speed of 50 km/h. A fly starting out at the front of one train, flies towards the other at a speed of 600 km/h. Upon reaching

30. astronomy

what is the meaning of astronomy?

31. Math

If the area of rectangle abcd is 50 cm2, what is the radius, in centimeters , of each circle.

32. Math

Could anyone explain to be what these term mean in math? I try googling them but can't find the answer. Thanks 1.Opposite of a Difference 2.Opposite of a Sum 3.Opposite of an Opposite

33. Math

You and your roommate have timed the necessary physical operations. The ﬁrst physical production step is to wash out the mixing bowl from the previous batch, add all of the ingredients, and mix them in your food processor. The mixing bowls hold

34. Physics

You are on a boat heading out to sea. The boat is going 5m/s toward a buoy (the origin in your chosen frame of reference) that is 300 meters away. How long will it take to be 500 meters beyond the buoy?

35. Physics

Determine the magnitude and direction of the total electric force on the +q charge by the +Q and -Q charges respectively. it should express and algebraic expression using Q,q,x,d and fundamental constants. -- I am trying to post a graph but it is not

36. English

'choose any of the motifs and complete a piece of creative writing in any genre that uses that theme as a basis. you may also use that theme or motif, as long as you can justify the presence of that theme in the novel. You may write a short story play,

37. statistics

The diameters of grapefruits in a certain orchard are normally distributed with a mean of 6.45 inches and a standard deviation of 0.45 inches. Show all work. (A) What percentage of the grapefruits in this orchard have diameters less than 7.1 inches? (B)

38. Chemistry

Assume tat you have a sample of a gas in a cylinder with a movable piston at constant pressure. Determine the volume of the gas if the absolute temperature is decreased by twenty-five percent.

39. Chemistry

the temperature of a gas in sealed container changes from 20. c to 40.0 C. If the volume remains constant,the pressure will change from 660 torr to ?

40. physics

Calculate the kinetic energy acquired by a 11- nail when it is struck by a 540- hammer moving with an initial speed of 4.9 .

41. physics

Bob has a helicopter and from the launch pad he flies the following path. First he travels from the launch pad a distance of 33 kilometers at heading 10 degrees West of North. Then he flies 18 kilometers heading 45 degrees East of South. After this he

42. Physics

A ball is dropped from rest from a height of 20.0 m. One second later a second ball is thrown vertically downwards. If the two balls arrive on the ground at the same time, what must have been the initial velocity of the second ball?

43. +1 SCIENCE

AN INSECT TRAVELS IN A CIRCULAR MOTION AND IT TRAVELS 6 ROTATIONS AT A TIME 31.4 SECOND FIND THE ANGULAR VELOCITY OF THE INSECT AND OBTAIN THE EXPRESSION FOR CENTRIPETAL ACCELARATION IN TERMS OF ANGULAR SPEED?

44. math

How Can I Find The Value Of (10 ^ -0.1) (Without Using Calculator)

45. chemistry

I will be very greatfull to you,if you help me to balance the below equations: 1.)NaOH+S gives rise to Na2S+S2O3+H2O 2.)Al(OH)3+3HCL gives rise to AlCl3+3H2O

46. algebra

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 175 and a standard deviation of 6. We find the heights of 60 people. (a) How many would you expect to be between 167 and 183 cm tall? (b) How many would you expect to

47. computers

_______________ works as a command interpretor A) Hardware B) Kernal C) Shell D) CPU 6. The process which terminates before the parent process exits, is called as A) Zombie B) Orphan C) Child D) None 74. The primary characteristic of a key field as that it

48. Science

Please I really need help!!! Question- Car A travels from New York to Miami at a speed of 25m/s. Car B travels from New York to Chicago, also at a speed of 25m/s. Are the velocities of the cars equals? Explain.

declarative, imparative, interrogative, or excalmatory? 1. How pretty the sunset is 2. Don't stand so close to the edge 3. It was quite chilly at night 4. Look at us riding on mules in this canyon

50. math

If a pair of shoes that cost 90\$ are on sale for 25% off. What is the sale price ?

51. MATH

An investor received a check in the mail that was for 6 percent of the amount invested. if the amount invested was \$450, what was the amount of the check?

52. education-curriculum and instruction

1- what does being a reflective decision maker mean to you ? 2- how have you experienced teachers you know being reflective dicision maker?

53. Math

Write 0.2 in the form a/b using integers to shoe that it is a rational number

54. Chemistry

What are the various uses of radioactivity in healthcare? What are the future trends in healthcare with respect to the use of radioactivitiy?

55. history

The Spanish, French, and English all explored America and left a lasting mark on the New World’s development. Compare and contrast the colonization methods used by each. Be sure to discuss the goals, characteristics, and lasting effects of each power’s

56. social studies

Hi, Can you help please? I usually have my answer ready and ask you to check it , but this time I cannot find it? The question is--- What difficulties did the North face from its own people? This is a question from a worksheet of 12 questions and it is

57. science

1. what weight in grams of magnesium oxide will produce from burning 96 grams of magnesium? 2. a solution containing 252g of calcium sulfate will produce from 165lbs of phosphate rocks containing 82.5 % pure calcium phosphate treated with sulfuric acid? 3.

58. Physics

Item 4 Two 2.0 masses are 1.0 apart on a frictionless table. Each has 1.0 of charge Part A - What is the magnitude of the electric force on one of the masses? Express your answer using two significant figures. = Part B - What is the initial acceleration of

59. +1 SCIENCE PHYSICS

A FROG SAW AN INSECT ON THE GROUND AT A HORIZONTAL DISTANCE OF 30 METER FROM IT. THE FROG CAN JUMP WITH A SPEED 20 METER/SECOND IN ANY DIRECTION. IT JUMPS WITH HIS INITIAL SPEED AND LAND ON THE INSECT. A: WHAT IS THA TYPE OF MOSSION MADE BY THE FROG? B:

60. trig

Suppose that 0degrees

61. algebra

What is the probability of getting a license plate that has a repeated letter or digit if you live in a state that has three numerals followed by five letters followed by one numeral? (Round to the nearest whole percent.)

62. pre-algrbra

need help with math problem 15-2(5-2) Answer=10

63. Physics

You are riding on a jet ski directed at an angle upstream on a river flowing with a speed of 2.8 m/s. If your velocity relative to the ground is 8.2 m/s at an angle of 25.0° upstream, what is the speed of the jet ski relative to the water?

64. math

arrange these fractions in acsending order :1/2,3/4,5/8,7/16 i got 1/2,3/4,5/8,7/16. My answer is same as the question is my answer correct

65. math

What is the probability of getting a license plate that has a repeated letter or digit if you live in a state that has four letters followed by two numerals followed by two letters? (Round to the nearest whole percent.)

66. math

classify the triangle as acute right obtuse 3,5,radical 34

67. science

What are attributes of lab safety rules

68. algebra

given the linear equation y=-7/4x-1 find the y-coordinates of the points (-4 ), (0 ),and (4 )

69. Physics

n reaching her destination, a backpacker walks with an average velocity of 1.19 m/s, due west. This average velocity results, because she hikes for 5.07 km with an average velocity of 2.22 m/s due west, turns around, and hikes with an average velocity of

70. social studies

I have another Civil War question. How did the war split families and divide friends? My answer-- It pitted brother against brother, parents against their children, and neighbor against neighbor. For example, John Crittenden had two sons who were generals

71. Geometry

Suppose the coordinate of P is 2, PQ = 8, and PR = 12. What are the possible coordinates of the midpoint of the given segment? The coordinates are PQ, PR, and QR.

72. pre algebra and trigonomerty

5x+5 +5x+13 5x+9 5x+9

73. 6th grade language to Ms. Sue

this is what i think. 1. How pretty the sun is- declarative 2. Don't stand so close to the edge- imparative 3. It was quite chilly at night-exclamatory 4. Look at us riding on mules in this canyon- exclamatory

74. computer science

I have three different network a linux, windows xp and MAC is there a way for me to connect them so that the all could share resources. if so how

75. statistics

if I rank 338 out of a class of 540 what percentage of the class am i in

76. Geometry

Find the x- and y- intercepts for each equations. What is the x- and y- intercepts? y= -2x + 8

77. Trigonometry

determine real numbers a and b so that the expression 8sin^2(theta) + 2cos^2(theta) can be rewritten as (a)sin^2(theta) + b? If you can help me out on how to start it would be great.

78. Biology

Identify two ways that scientists address bias in their research. How should I answer?

79. algebra

find the x and y intercepts and graph the equation plotting the intercepts 6x-7y=-42

80. Math

Describe how to create an equivalent fraction for a pewrcent when given the factor

81. Math

Michelle is making 8 identical necklaces by stringing beads together. To make one necklace, se will repeat the pattern of beads shown four times. How many purple and yellow beads will be needed to make all eight necklaces? This is the pattern:

82. Accounting

March 3 Inventory units 60 per unit \$1,500 total \$90,000 March 8 Purchase 120 units \$1,800 per unit total \$216,000 March 11 Sal units 80 per units \$5,000 total \$400,000

83. algebra

solve the following equation for s r=10t-3s/16

84. computer

Which of the following does not print the numbers from I to 10? A) maino int i; while (i

85. algebra

write slope intercept equation for line passes through (6,1) and has the slope 5/6

86. math

given that csc(theta) =-3 and cos(theta)>0, find the remaining 5 trigonometric functions of theta. i have my triangle graphed in the fourth quadrant but I'm getting confused because of the negatives...

87. Chemistry

given 6.7 grams of sodium acetate and 6.7 g of magnesium acetate, calculate the number of moles of acetate in sodium acetate. calculate the number of moles of acetate in magnesium acetate.

88. chemistry

B-Mercaptoethanol is available as a 98% (w/w) solution, sp gr 1.114. What voulume is needed to prepare 0.100 L of a 50.0 mM solution. fw=78.13

89. algebra/math

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 169 and a variance of 9. The material is considered defective if the breaking strength is less than 163 pounds. What is the probability that a single,

90. ALGEBRA II

the perimeter of a triangle is 51 centimeters, the longest side is 1 centimeter less than the sum of the other two sides. twice the shortest is 11 centimeters less than the longest side. find the lengths of each side of the triangle.

91. History

How did Pp !@#\$%^& Cheney's net worth change after he left his position as secretary of defense under Reagan-Bush but before he became VP? Who employed him? Any information regarding his net worth over time and who employed him over the years would be most

92. physics

In a region containing a uniform electric field at right angle to the magnetic field suppose, for instance, that Vector B point in X direction and Vector E in the Z axis as shown below. What path will a particle that is released from the origin it follow.

93. english

can you please help me make my three senences advanced. im talking about two ways of becoming rich really fast if yourfrom a middle class family. im writing these senetnces for an essay on the book, "the great gatsby." There are two ways of getting wealthy

94. Math Pre Algerbra

How did the teacher get this answer for this problem? Okay so heres two questions... first 24/4(2) = 12 and i believe he said he didn't use the (2) but... when i ask a question about a question like that they use the 2 like this 9*3 - 2(5) = 17

95. Math Pre Algerbra

How did the teacher get this answer for this problem? Okay so heres two questions... first 24/4(2) = 12 and i believe he said he didn't use the (2) but... when i ask a question about a question like that they use the 2 like this 9*3 - 2(5) = 17

96. teacher aide technology in the classroom

what does a stimulation program do? (a)it tutors stuents only on a one on one way (b)it presents a sequence of images that imitates a real or imaginary system (c)it allows students to play games with a computer (d)it drills students in subjects they need

97. math

the measure of angle 1 is five less than four times the measure of angle 2. if angle 1 and angle 2 form a linear pair, what are their measures?

98. american history

what were the features of the compromise of 1860? i cant seem to find the answer anywhere

100. physics

A whale swims due east for a distance of 4.2 km, turns around and goes due west for 3.0 km, and finally turns around again and heads 1.8 km due east. What is the total distance traveled by the whale?

101. explain the difference between muslims and arabs

what are some of the changes the united states has made to policies concerning the treatment of muslim and arabic members of societys

102. math

There are 1000 Meters in 1 Kilometer, If you express the diameter of mercury in meters, what will be the value of the first digit

103. chemistry

20 g of sugar are dissolved in 1 L of water. Calculate the concentration of this solution.

104. American Hist

The wilmot proviso was a bill that would ban slavery in territories gotten after the war with mexico - True or false? True?

105. management quality

how do you deal with poor boss behavior when stealing company property?

106. Mathematical Applications

For the life of me, I cannot understand this question! Will someoe please help me, explain to me how I can solve it, PLEASE! Q- a party supplies store recorded net sles of \$423,400 for he year.The store's beginnng iventory at retail was \$105,850 andits

107. Trigonometry

determine real numbers a and b so that the expression 8sin^2(theta) + 2cos^2(theta) can be rewritten as asin^2(theta) + b I just need help in how to start it.

108. algebra

write the slope-intercept equation for the line that passes through (-8,-11) and is perpendicular to -2x-7y=-14

109. english

The following questions have sentences with blanks. Choose the answer option which will correctly rill the blank 1) You can borrow my car the end of the month A) until B) by C) in D) for 2) Most scholars consider 1887 to be the beginning of

110. History

Explain U.S relations in East Asia during the 1950s

111. Physics

Part A - What is the magnitude of the electric force on charge in the figure?

112. Math

Cans of soup 1 2 3 4 Number of servings 4 8 12 16 Write a function rule

113. science

i want round 21or 11 or 55 to30 20 60 respectively

114. Math

Hello, im in 6th grade and im trying to find out the least common multiple of a number and the greatest common factor of a number. I don't know what they are. thanks

115. math

Find the probability whose odds against are given in the problem. Odds against are 10000 to 1.

116. physics

Ann is driving down a street at 59 km/h. Suddenly a child runs into the street. If it takes Ann 0.774 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m

117. chemistry

if there are 8.0 mg of Na+ contaminant per liter of water sample, calculate the number of moles of Na+ per liter. Calculate the weight of Na+ in a 1L sample of water that contains 1.00 x 10^2 umol Na+/L

118. Chemistry

Why are covalent bonds weak in the presence of heat but strong in the presence of water?

119. Math/Operations

Wells Fargo has adopted lean philosophy for its document management team that provides paper imaging, electronic document routing, fata lifting, and document storage services to the the Home and Consumer Finance division. One function area of the document

120. science

Newton’s law of gravity is used with great success in most everyday situations, and indeed, in planning planetary space missions such as the Rosetta probe. However, Einstein’s theory of general relativity and a theory of quantum gravity are needed to

121. short story lambslaughter

what is the issues raises by the author and the setting fot this short story actually?

122. Composition and communication

Using the internet, find two examples of what you consider biased writing about the effect of videogames on children?

123. Math Pre Algerbra

4+3[8-3*2+4(5-1)] I got 68

124. algebra

The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 167 and a variance of 9. The material is considered defective if the breaking strength is less than 161 pounds. What is the probability that a single,

(9m+2)(m-3)

126. English

please explain the statement "The suitors are an embodiment of a heroic society in decay" I have to write a paper and would like to better understand that statement. This is from the epic Odyssey.

127. maths

In film criticis process 62 people seeing US based film,75 people seeing Indians film,86 people seeing Chinese film, 45 peoples seeing both US and Indians film,34 people seeing both Indians and Chinese film,26 people seeing Chinese and US based film.3

128. maths

THE LEAST SUM OF A POSITIVE NUMBER AND ITS RECIPROCAL IS A.2 B.4 C.6 D.NONE my answers is A

which of the following is not recommended when considering or acceptin a job offer

how long would it take to accumulate 2,000,000 with a 5% intrest rate

131. English

What is the meaning of validity, truth, and soundness as they relate to logical syllogisms

132. nursing

name 5 functions of pharmacodynamics

133. nursing

What are the 4 goals of drug therapy.

134. Biochem

The pK of acetic acid is 4.76. Which statement is true at pH 5.0? [A^-] = [HA] [A^-] < [HA] [A^-] > [HA]

135. 6th garde language to ms. sue

this has to be correct! 1. How pretty the sunset is-interrogative 2. Don't stand so close to the edge- imparative 3. It was quite chilly at night- declarative 4. Look at us riding on mules in this canyon- exclamatory

137. nursing

How do the physiologic changes of pregnancy affect drug administration?

138. math

−7.2x − 1.5 > 20.1

139. Algebra

I do not understand multioplying binomials + factoring (x+9) (x-9) can you show and explain the steps

140. algebra

What is the x- and y- intercept for this equation? y= -2x + 8

141. English

What year was it when the treatment of taliban women became known?

142. Chemistry

At a prominent state hospital, a 45 year old woman is recieving a combined modality' treatment for the intial stage of breast cancer. State the two aspects included in this treatment. State the methods by which a radiation oncologist can administer these

143. algebra

If a and b are positive numbers, then is a -b is always??

Why are cyanobacteria not bacteria? Is it because they can be nitrogen fixers?

145. medical billing and coding

which of the following is an expanded option for participation in private health care plans? A-medicare part A. B-Medicare part B. C- medicare advantage or D- medigap

146. Math

Write a function rule. Cans of soup- 1,2,3,4 Number of serving-4,8,12,16

147. Language arts

I'm doing a 2min. Presentation to the class and I need to find information about prepositional adverbs, but what site should I go.

148. English(Essay)

This is the finished version of my essay from earlier. I'm not sure if it's all the way finished because I have to read it to my group for their point of view. Could someone proofread this for me and give me some tips again? Just don't be too harsh because

149. physical science

One observation that regards the magnetic stipes on the ocean floor that would disprove the theory of platetectonics would be?

whats a2=a2

151. trig

5sin^2 270degrees -3cos180degrees-tan(-180degrees) i got -2 but I'm not sure if i did it right?

152. Social Psychology

What are some of the stereotypes clichés that are aimed at men that might or can affect their self esteem?

153. Chemistry

If there are 8.0 mg of dissolved O2 per liter of H2O at 20 degrees C and 1 atm, calculate the number of moles of molecular O2 and the molarity of dissolved O2 per liter of H2O.

(a+b)3

155. Chemistry

calculate the number of K atoms in a 1.00 ug sample of pure KCL. K=39.1 g/mol and KCL= 74.6 g/mol.

156. science fair ideas

What are some really good/cool science fair ideas?

157. maths

How to find distance and midpoint b\w the given points: a. (-3,-1)and(9,4) b.(3rs,-s2)and(rs,-r2) Find the length of given quadrilateral: (-8,-3),(-2,6),(8,5)and(2,-4)

158. Astronomy

If the giant blue star R136a1 has the diameter 35 times our sun, how many times bigger is it? example: our sun is 1.3 million times bigger than the earth. thanks for the help!

159. geometry

If X=5 units, x=11 units, h=10 units, what is the area of trapezoid shown above

160. Dav,science

U find your mass to be 42 kg on weighing machine.is your mass more or less than 42 kg?explain