# Questions Asked onOctober 6, 2013

1. ## general chemistry

a 5.95 g sample of AgNO3 is reacted with excess BaCl2 according to the equation 2AgNO3 + BaCl2 yields 2AgCl + Ba(NO3)2 to give 3.17 g of AgCl. What is the percent yield of AgCl?

2. ## Physics

A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0° above the horizontal. How long is she in the air before returning to Earth? (g = 9.81 m/s2)

3. ## Physics

In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, depositing their kinetic energy and breaking apart the tumor’s DNA, thus killing its cells. For one patient, it is desired that 0.10 J of

4. ## chem 2

calculate kc for reaction I2 (g)+Cl2 (g)⇌2ICl(g )Kp=81.9 (at 298 K)

5. ## Math

Who is working harder, Fred running a 10 min mile pace at a 10% grade or Pete who is 55 kg, cycling on a Monarch ergometer with a resistance of 2.5 kg and a pedal rate of 60 rpm?

6. ## chemistry

If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?

Suppose that h(x)={x^2-x+5 if x2 Which of the following is equal to 7? I. lim h(x) x->2- II. lim h(x) x->2+ III. lim h(x) x->2 I only II only ***III only I and II only I, II, and III

8. ## college physics

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive

9. ## english

6.Read the following excerpt from "The Middle Passage" by Olauduh Equaino. Immediately another quite dejected fellow who on account of his illness was suffered to be out of irons also followed their example and i believe many more would soon have done the

10. ## Chemistry

If 5.300 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

11. ## Chemistry

Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) → C2H5OH(l) What is the maximum amount, in kg, of ethanol that can be produced when 1.65 kg of ethylene (C2H4) and 0.0610 kg

12. ## MATH - URGENT!!!

In how many ways can you spell the word COOL in the grid below? You can start on any letter, then on each step you can step one letter in any direction (up, down, left, right, or diagonal). You cannot visit the same letter twice. C C C C C L O O O L L O O

13. ## math

I need the answers to the why did the banana go out with the prune worksheet. I already have the answer to the riddle, but I need the numeral answers please.

14. ## Psychology

Please check my answers... 1. Asthma is associated with environmental conditions. True 2. Only one-half of U.S. children with asthma follow their doctor's advice about medication. False 3. The percentage of overweight children has increased only marginally

15. ## physics

Derive a formula for the maximum speed vmax of a simple pendulum bob in terms of g, the length ℓ, and the maximum angle of swing θmax. Express your answer in terms of the variables g, l, and θmax.

16. ## chemistry

Suppose 13.8 g Na and 21.6 g of water are mixed. What is the theoretical yield in grams of hydrogen from this mixture. what is the % yield if 0.500 g of H2 is formed

17. ## Physics/electricity

In the Bohr model of the hydrogen atom, an electron in the 2nd excited state moves at a speed of 5.48X10^5 m/s in a circular path having a radius of 2.12X10^-10 m. What is the effective current associated with this orbiting electron?

18. ## Math

What is the functional capacity in METs and Vo2 (mL/kg/min) of a 70 kg man who completed Stage V (3mph, 12.5% grade) of a Balke TM test?

19. ## Chemistry

The tripeptide is T-A-K 1. What is the overall charge of the tripeptide below pH 1.0? 2. What is the overall charge of the tripeptide at pH 12? 3. What type of intermolecular attractions could the side chains of the amino acids make with the solvent

20. ## Physics/electricity

Eighteen-gauge wire has a diameter of 1.024 mm. Calculate the resistance of 19 m of 18 gauge lead wire at 20°C.

21. ## physics/algebra

Find the tension in cable A A if w 1 w_1 = 54.0N N and w 2 w_2 = 120N in a downward triangle 60degress on (both sides of angel and at the end of the triangle is w1 a and then w2) how would I solve this equation I don't have a glue where to start. Your help

22. ## Algebra

A baseball team has home games on Thursday and Saturday. The two games together earn $4571.50 for team. Thursdays games generates$68.50 less than Saturday's game. How many was taken in each games? How much did Thursday's game generate?

23. ## Calculus help, please! :)

Consider the table of data for the function g(x),below: x: 2.9, 2.99, 2.999, 3.01, 3.1 g(x):4.41, 4.9401, 4.994, -5.006, -5.0601, -5.61 From the data given, it would appear that the lim g(x) x->3 is likely to be:

24. ## algebra

------Suppose someone opens the valve on a large water tank so that water drains out. Choose a starting volume of water in the tank (from 100 to 500 gallons), and choose how much water drains out each day (from 2 to 5 gallons). Write the equation that

25. ## MATH - URGENT!!!

There are 5 boys and 4 girls in my class. In how many ways can they be seated in a row of 9 chairs such that at least 3 girls are all next to each other?

26. ## Jiskha

I typed several questions and answers regarding the subject of Geography, and suddenly, as I was waiting for a reply from Ms. Sue, it seemed as though my questions were deleted from the webpage where all of the other questions are posted. I do not know

27. ## physics

The drawing shows an exaggerated view of a rifle that has been "sighted in" for a 91.4-meter target. If the muzzle speed of the bullet is vo=427m/s, what are the two possible angles between the rifle barrel and the horizontal such that the bullet will hit

28. ## physics

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

29. ## Geography (Ms. Sue)

1). How has Siberia's climate affected transportation in the region? A: Siberia's climate has affected transportation as it made travel through the region was slow and dangerous. 2). What impact did the Trans-Siberian Railway have on Russia's population?

30. ## Finance

You were hired as a consultant to ABC Company, whose target capital structure is 40% debt, 15% preferred, and 45% common equity. The before-tax cost of debt is 8.00%, the cost of preferred is 7.50%, and the cost of common is 12.75%. What is its WACC if the

31. ## Physics

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 42 ∘. The gravitational acceleration is g=10 m/s2 (a) At

32. ## Chem

An analysis of generic antacid tablets labeled to contain 250mg of CaCO3 (MM= 100.09g/mol) per tablet of active ingredient was performed. The analysis was performed by dissolving a 0.550g sample of the antacid tablet in 75.00mL of 0.1055M HCl. The excess

33. ## physics(help)

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

34. ## Biochemistry

You are performing site-directed mutagenesis to test predictions about which residues are essential for a protein's function. Which of each pair of amino acid substitutions listed below would you expect to disrupt protein function the most? A. Val replaced

35. ## PHYSICS

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

36. ## math

The reading list for a literature class has 7 fiction and 9 nonfiction books. A student is to write a report on 5 books from the list during the semester. The reports must include at least 1 and at most 4 reports of fiction books. In how many ways can the

37. ## College Math 45

Mrs. Brown has 17 children in her first-grade class, and Mr. Lopez has 20 children in his second-grade class. The principal has been asked to select 1 student from one of the classes to appear at a PTA meeting. How many ways can the selection be made?

38. ## physics

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 45 ∘. The gravitational acceleration is g=10 m/s2. (See

39. ## Algebra

The blood alcohol concentration (BAC) of a person who has been drinking is given by the following expression. Number of ounce % alcohol x 0.075 divide body weight in pounds minus hour of drinking x 0.015 In 4 hours a 220lb person has drunk 5 12 ounce beer

105. ## english

Although she never actually said it, mom (blank) that we were going to get a pet. a=refuted b=implied c=substantiated d=inferred answer is b

106. ## English

1. The basketball player threw the ball into the basket. 2. The basketball player threw the ball in the basket. 3. The basketball player threw the ball on the board so that it can go into the basket. 4. The basketball player threw the ball onto the

107. ## college physics

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive

108. ## Ethics and moral reasoning

The history of philosophy would describe Immanuel Kant as

109. ## Journalism

I tried writing the opening to my article on vegetarianism and this is what I got so far. [A lot of people like to sit down at night and eat a big, juicy steak – and then there are those who prefer an organic meal without any meat. Vegetarianism is not

110. ## history

2. William Lloyd Garrison’s The Liberator was known for appealing to its readers’ sense of (1 point) A. moral correctness. B. modern convenience. C. economic concern. D. social status. a

111. ## Geography (Ms. Sue)

If it is 6:00 Sunday morning in New York,what are the day and time in Auckland, New Zealand?

112. ## math

A tray contains 11 chocolate chip cookies and 15 oatmeal raisin cookies. How many ways can a child select 4 cookies that include at least 1 chocolate chip cookie?

113. ## algebra

to determine the number of trout in a lake, a conservationist cathes 123 trout, tags them and throws them back into the lake. later,44 trout are caught, 11 of them are tagged. how many trout would the conservationist expect to be in the lake

114. ## math

Assume that the camper has 3 jackets, 7 sleeping bags, and 9 different packages of food. An outfit consists of 1 jacket, 1 sleeping bag, and 6 packets of food. How many ways can the trip be outfitted?

115. ## Computers

Hi, Am I on the right track? Reading for an hour now..and wanted to check my answers.. Which modem uses the same medium used to transmit video signals" My answer: C. Cable ADSL BRI DiGITAL '2. Which is the fastest wireless standard? My answer: 802.11G

116. ## science

What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA–, A2–) at pH 8.67? The acid dissociation constant values for piperazine are Ka1 = 4.65×10–6 and Ka2 = 1.86×10–10.

117. ## math

a picture 8 in. by 12 in. is placed in a frame which has uniform width. if the area of the frame equals the area of the picture, find the dimension of the frame

118. ## math prob

A committee of 5 people is selected from a group of 7 men and 9 women. In how many ways can the committee be selected so it contains at least 1 woman?

119. ## maths

(3x + 4) + (5y -1) = 10 - 16i A. x = 2, y = -3 B. x = 1, y = -2 C. x = 3, y = 2 D. x = -3, y = 1 think the answer is C

120. ## math prob

Twelve people attend the first meeting of the Star Wars Club. They exchange e-mail addresses. How many exchanges take place?

121. ## sociology

what are three challenges involved with ensuring that teachers strategies are appropriate for culturally diverse children

122. ## physics

The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time it takes to walk 12ft on a non moving sidewalk in the oppsite direction. At what rate would a person walk on a nonmoving

123. ## maths2

|10x - 1| = x - 10 A. -1, 1 B. 1 C. -1 D. No solution

141. ## Physics

A stone is thrown up vertically from the ground (the gravitational acceleration is g = 10 m/s^2 ). After a time dt =1 s, a second stone is thrown up vertically. The first stone has an initial speed v1 = 11.0 m/s, and the second stone v2 = 16.0 m/s. (a) At

142. ## math

Which set of numbers has a greatest common factor of 1 ? a. 2,3,and 6 b. 2,200, and 400 c. 3,9,and 27 d. 22,33,and 99 e. 100,500, and 2,500 please answer and explain

143. ## algebra

What did the baby buzzard say when it say an orage in the nest

144. ## physics

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

145. ## world history

the meaning of paleolithic age

146. ## Physics

The time at which it took the arrow to reach the bulls eye is .6 seconds and it will land 1.8m under the bullseye

147. ## physics

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

148. ## college physics

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive

149. ## bus 101

Team diversity is often established in a team,by bringing together the expertise of members from various functions in the organization. A.problem-solving B.working C.cross-functional D.self-managed I need help with this ? THX

150. ## Chemistry

In the space below, show your work for determining the volume, mass, and moles of baking soda Moles of baking soda reacted Mass of baking soda reacted (g) Volume of baking soda reacted 140 ml of vinegar 5 tsps of baking soda were used

151. ## Chemistry

I need help with answering this question. Thanks! What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?

152. ## Politics

What is the history of the formation of Democratic Socialism? Can you please provide links?

153. ## Pre-Calculus

The profit in dollars in producing x items of some commodity is given by the equation P=−11x2+346.5x−2612.5. How many items should be produced to break even?(If there are two break-even points, then enter the smaller value of x. Your solution may not

154. ## intro to chem

a 155.0 g piece of copper is dropped into a 250.0 g of water at 28.8 C, what is the final temp of the mixture?

155. ## physics

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

156. ## science

You prepare a buffer solution from 10.0 mL of 0.100 M MOPS (3-morpholinopropane-1-sulfonic acid) and 10.0 mL of 0.079 M NaOH. Next, you add 1.00 mL of 7.15 × 10-6 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine

157. ## physics/algebra

A 74.0kN kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s {\rm km/s}, it comes to rest in 2.40min min with uniform acceleration. What braking force must its rockets provide? Ignore air resistance.

158. ## Math

A patient must exercise a MET level of 8. What grade is needed if the speed is 3 mph?

159. ## Math

What is the MET level of a person that is running on a level treadmill at 6 mph?

160. ## Math

Determine the MET level for each activity for a 70 kg person. a.) 18 steps/min, 25 cm/step b.) 6 mph, 12% grade c.) 750 kg m/m on a Monarch ergometer d.) Arm cranking at 350 kg m/min on a Monarch ergometer

161. ## Find the value of K (Polynomial)

Dtermine the value of K such that -2 is cone root of the equation 2x^3+(K+1)x^2=4-x^2 I tried it a couple of times and I keep getting the wrong answer. The answer is K=3.

162. ## Maths

Consider the line passing through two points P=(1,8) and Q=(−1,3). If the line also passes through point R=(15,a), what is the value of a?

163. ## Math

-35/7 less than or equal to 7x/7

164. ## Math

If an individual wants a work of 1300 kg m/min with a cycling speed of 300 m/min, how much resistance is needed?

165. ## Physics

A fireworks rocket is moving at a speed of 48.4 m/s. The rocket suddenly breaks into two pieces of equal mass, which fly off with velocities v1 and v2, as shown in the drawing. What is the magnitude of (a) v1 and (b) v2? In the image the two pieces are

166. ## News

what's the biggest challenge to newpapers today? would it be the internet?

167. ## math

An internet company charges $30 a month. There is also a$30 installation fee. Is the number of months you can have internet proportional to the total cost?

168. ## Chemistry

How many years will it take for 88g tritium to decay to an 11g sample?

169. ## Geography (Ms. Sue)

Which has the higher population density: The United States or Russia and the Republic? Why? A: I believe the United States has the higher population density because ?

170. ## math

A quadrant has an area of 175m2. Find the length of its base

171. ## Science

Is water organic

172. ## Math

If a 60 kg man is riding a Monarch ergometer at 50 rpm and the resistance is 2.0 kg, what is the power output?

173. ## math

what is the answer in 5 x 1.1/2

174. ## Math

What is the MET level of a man running 7 mph, 5% grade?

175. ## Language Arts

if you say, "The book is on top of the big slide." would "on top of" be a compound preposition or is on and of two different prepositions? Thanks...

176. ## williams pkwy

how much money must be deposited now @ 6 % interest compounded semi annually to yield an annuity payment of \$ 4000 at the end of each six month period for a total of five years

177. ## Math

A 154-pound woman walks at 3.0 mph 0% grade for 5 min, runs at 5.5 mph 5% grade for 32 min. What is her total caloric expenditure?

178. ## physics(*URGENT*)

We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See

179. ## Mathematics

What stepping rate is needed if a person wants to work at a Vo2 of 45 mL/kg/min using a bench that is 34 cm high?

180. ## Mathematics

If a 75 kg person pedals a Monarch leg ergometer at 50 rpm, how much resistance is needed to work at a level of 11 METs?

181. ## Easy math

Can someone give me just four random rational numbers (decimal or fraction) between the numbers of -1, and 1?

182. ## Physics

A force applied to an object of mass m1 produces an acceleration of 3.10 m/s2. The same force applied to a second object of mass m2 produces an acceleration of 2.00 m/s2.

183. ## Science

When investigate if chlorophyll is necessary for photosynthesis why is the leaf rinse with tap water?

184. ## american history

. Which of the following was the primary cause of the Balkan Wars conducted during the Clinton administration? A. The rise to power of Slobodan Milosevic in Serbia B. Muslim activism in Bosnia C. The UN peacekeepers' inability to stem ethnic cleansing D.

185. ## Maths

Given that −24

186. ## English

Jessy heard a cat cry. (Did the cat weep or shout according to the sentence?)