# Questions Asked onMarch 27, 2014

1. ## Chemistry Help Please!!!

What initially forms as pale blue and pale green precipitates when NH3(aq) is added to [Cu(H2O)6]^2+ and [Ni(H2O)6]^2+ solutions, respectively?

2. ## Chemistry

I would really like to understand how to do these problems, because my exam is coming up in a few weeks. I still cannot comprehend how you can tell if a system is is positive or negative according to reaction. For #1, I presume it is E if it is spontaneous

3. ## History

How was James I's rule of England similar to peter the great's rule of Russia? Both reduces the size of their empire. Both increased their own power without approval by other government entitles. Both relied heavily on the opinions of their subjects when

4. ## physics

Suppose that, on a day when the outside temperature is 15 degrees Celsius, we fill a balloon with pure nitrogen gas, of which the molar mass is 28 grams per mole. Now suppose that we want to heat up a second (equally large) balloon containing air, such

5. ## physics

Some say that the hot air balloons with which the Montgolfier brothers performed their first flight had a volume of 1700 cubic metres and could lift 780 kilograms (that includes the balloon, basket and payload). Assume that the balloon took off on a day

6. ## econ

The terms below are measures or individual components of the money supply. Specifically considering the money supply of the United States, rank these items from largest to smallest in terms of dollar value. Currency, M2,M1,Balances in savings accounts,

18. ## 8th Grade U.S History

Document F Andrew Jackson, Proclamation to the people of South Carolina, December 10, 1832 I consider that the power of one state to annul a law of the United States is not consistent with the survival of the Union. Nullification is forbidden by the

19. ## Dimensionless parameters

The drag, D, on a sphere located in a pipe flow through which a fluid is flowing to be determined experimentally. Assume that drag is a function of the sphere diameter, d, the pipe dianeter, H, the fluid velocity, V, and the fluid density, p. a) What

20. ## Maths

A box contains pns and pencils in the ratio 6 : 5. There are 24 pens. How many pencils are there?

21. ## Global Studies

All of the following affect climate EXCEPT a. vegetation b. elevation c. location d. wind patterns

22. ## Math

in triangle PQR, PQ=5.4, QR=3.6, and PR=6.2. to the nearest tenth, what is m

23. ## History

What federal document did Susan B Anthony quote in the beginning of her speech in I believe 1872? I know she was trying to equal rights between women, and I think it would make sense for it to be the preamble to the Federal Constitution. Opinions?

24. ## Algebra

Keiko is a software saleswoman. Let represent her total pay (in dollars). Let represent the number of copies of History is Fun she sells. Suppose that and are related by the equation . Answer the questions below. Note that a change can be an increase or a

50. ## Electricity

A 10 nF capacitor is charged to 5 V. How much charge does it store?

70. ## statistics

An airline company is considering a new policy of booking as many as 161 persons on an airplane that can seat only 140. (Past studies have revealed that only 81% of the booked passengers actually arrive for the flight.) Estimate the probability that if the

71. ## Math

Fay is making 13 bows to sell. She has 36 feet of ribbon. If each bow requires 2 1/4 feet of ribbon, how much ribbon will not b used

72. ## math help

factor: (a-b)^2 - (c-d)^2

73. ## geometry

The perimeters of 2 similar polygons are 12 and 16. 1. What is the ratio of the lengths of 2 corresponding sides? 2. What is the ratio of the areas? 3. If the area of the smaller polygon is 54 what is the area of the larger polygon?

74. ## physics

For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air Because of the air jets, the friction impeding the horizontal motion of the platform is negligible. Each time the heart beats, blood is pushed

75. ## physics

The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0430 kg and is moving along the x axis with a velocity of +5.41 m/s. It makes a collision with puck B, which has a mass of 0.0860 kg and is initially at rest.

76. ## Math

If an orange is twice as many as a pear. How many pears are there?

77. ## physics

A 6.26-g bullet is moving horizontally with a velocity of +344 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is

78. ## Geometry

I need help in this problem: A 14-foot ladder is leaning against a house so that its top touches the top of the wall. the bottom of the ladder is 8 feet away from the wall. which of these can be used to find the height of the wall? A. in a right triangle

79. ## math help!!

factor: (x^2+5x)^2 - 36 and (a-b)^2 - (c-d)^2 show the steps pleasee!

80. ## chemistry

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg{\rm kg} of magnesium and 2.58 kg{\rm kg} of fluorine. A second sample produced 1.50 kg{\rm kg} of magnesium. How much fluorine (in grams) did the second sample produce?

81. ## Math ~ Check 1 Answer ~

Complete the sentence below. Scatter plots are used to look for a pattern of association, or trend, between one set of values. two sets of values******* three sets of values. four sets of values

82. ## Math

If x+15 and 2x+27 represent the number of degrees in measures of two consecutive angles of a parallelogram, find the value of x.

asked by math help
83. ## Persuasive Writing help

I'm writing a persuasive request but English is not my native language. I've done many drafting and revising, but still not sure. so I would be grateful if you could show me what I did wrong and the correct way to revise it. Thanks "Dear xxx, I would like

84. ## science

the distance a car travels between the time the driver decides to stop the car and the time the driver puts on his brake is called the reaction distance how does the reaction distance change with speed

85. ## Physics

In a cyclotron (one type of particle accelerator), a deuteron (of mass 2.00 u) reaches a final speed of 10.1% of the speed of light while moving in a circular path of radius 0.540 m. What magnitude of magnetic force is required to maintain the deuteron in

112. ## Math

What is the domain of the function f(x)=2^(x+3)-1? I got (-infinity, infinity) is that correct?

113. ## algebra

What is the volume of a cylinder? diameter:2cm hieght:9cm

114. ## Math

Try to make 24 using -,+,•,/ 1,5,4,3 & 3,12,4,1 & 10,9,7,2

115. ## math

vehicles lose value over time. A car is purchased for $23 500, but it is worth only$8750 after eight years. What is the average annual rate of change in the value of the car, as a percent?

116. ## Physics

When you suddenly stand up after lying down for a while, your body may not compensate quickly enough for the pressure changes and you might feel dizzy for a moment. (a) If the gauge pressure of the blood at your heart is 15.02 kPa and your body doesn't

117. ## Math

a trainer for a professional football team keeps track of the amount of water players consume throughout practice. the trainer observes that the amount of water consumed is a linear function of the temperature on a given day. the trainer finds that when

118. ## physics

At some point in the combustion cycle of an engine, the temperature of a combusted air-fuel mixture is 582 degrees Celsius. Given that the pressure in the mixture is 6.2 bar, determine the density of the mixture (in kilogram per cubic metre).

119. ## Math

What is the domain of the function f(x)= -3^(x+3)+4? I got (-infinity, infinity) is that correct?

120. ## math

vehicles lose value over time. A car is purchased for $23 500, but it is worth only$8750 after eight years. What is the average annual rate of change in the value of the car, as a percent?

121. ## Math

What is the domain of the function f(x)= x+6? I got -infinity < x < infinity

122. ## science- Physics

Two electrons start at rest with a seperation of 5e-12 metres. Once released, the electrons accerelate away from each other. Calculate the speed of each electron when they are a very large distance apart.

123. ## Mathematics

Give the first three terms of the sequence of 1.Tn+1=Tn+n

124. ## physics

Two electrons start at rest with a seperation of 5e-12 metres. Once released, the electrons accerelate away from each other. Calculate the speed of each electron when they are a very large distance apart.

125. ## english

A French girl found them

126. ## English

I can stand that much to help the environment. --------------------------- What is the part of speech of 'that much' in the sentence? English - Writeacher, Tuesday, March 25, 2014 at 7:53am The sentence doesn't make sense. What does "can stand" mean here?

127. ## Statistics

For the most recent seven years, the U.S. Department of Education reported the following number of bachelor's degrees awarded in computer science: 4,253; 5,578; 6,406; 7,334; 8,728; 11,298; 15,182. What is the annual arithmetic mean number of degrees

131. ## 3rd grade math

suppose she cut the cake into 8 equal size pieces and 6 people at all the pieces. Explain how they could have divided the pieces so that everyone ate the same amount of cake. You can show your work in a drawing.

132. ## FINANCE

Many creditors of your firm offer early payment discounts. The accounts payable supervisor does not believe in paying early “as the bank overdraft rate of j12 = 8% pa is more than the average 2% offered for payment within 10 days from date of invoice”.

133. ## Math please check my answer?

This is my last question. What is the domain of the function below? f(x)= e^(x-4)-2 I got all real numbers is that correct?

134. ## Chemistry

Silver ion reacts with excess CN− to form a colorless complex ion, Ag(CN)−2, which has a formation constant Kf=3.0×1020. Calculate the concentration of Ag+ in a solution prepared by mixing equal volumes of 2.3×10−3M AgNO3 and 0.21M NaCN.

135. ## math

Two tracking stations 50 miles apart sight a weather ballon. The angle of the ballon from one of the stations is 45° and from the other is 60°. What is height of the balloon?

136. ## English

After watching a documentary about the environment on TV, I decided to start my own project,"Project Green Kid." Today was my first day as a Green Kid...... ---------------------------------- Do we have to use "a Green Kid"? What about "a green kid"? Why

137. ## Physics Help

It starts saying that impulse is related to velocity in a certain way. What is that relationship? I just said impulse = force x time and momentum = mass x velocity So would that be a correct answer to what they're wanting? Also, it says there is a

6 (31n+5)

139. ## Chemistry

How would you exactly start the first problem? My thermodynamic skills is a bit rusty. I am assuming I have to use ΔH°f under the given reaction..? But then..we barely covered ΔG° in class. Am I to use this equation, ΔG° = ΔH° - T ΔS°? Umm..can

140. ## physics

a car traveling at 43m/s decelerates at a rate of 7.1 m/s squared. how long did it take the car to stop? what distance did the car travel while stopping?

141. ## math

There are 10 different pairs of shoes in a wardrobe. Find the probability of the event that there is at least one pair among them in choosing 4 shoes by chance. Express your answer in rational form.

142. ## chemistry

calculate the grams of solute neede to prepare 24 grams of a 13.5% by mass scurose (c12h22o11) solution

143. ## Composition

How does taking observations obstruct or halt the writing process

144. ## Business Statistics

What is the median of 29, 49, 27, 64, 79, 59, 29 and 41? 29.0 45.0 59.5 49.0

145. ## English

1. In the evening, Sonya's father cooks dinner. 2. In the evenings, Sonya's father cooks dinner. 3. Evenings, Sonya's father cooks dinner. 4. Every evening, Sonya's father cooks dinner. (What is the difference of the four sentences in meaning?)

146. ## Calculus

If e^x = 243 and e^y = 32 then e^((3x + 4y)/5) =? The answer is 432, but I don't understand why.

147. ## Chemistry

How many grams of C would be necessary to produce 790. grams of CaCO3 by the sequence of reactions shown below? Step 1: CaO + 3C → CaC2 + CO Step 2: CaC2 + N2 → CaCN2 + C Step 3: CaCN2 + 3H2O → CaCO3 + 2NH3

148. ## analytical chemistry

What volume (in liters) of 0.96 M KOH solution should be added to a 0.130 L solution containing 10.2 g of glutamic acid hydrochloride (Glu, FW=183.59; pKa1=2.23, pKa2 =4.42, pKa3=9.95) to get to pH 9.90?

149. ## social study

what are the ways of solving enviromental problems in your communities?

150. ## math

A downtown auditorium hosts large events. The auditorium can seat 600 people at one time. The sponsors of an awards dinner are using the auditorium for 450 people. The chef has prepared meals for 3/4 of the usual 600 people. The pastry chef has made enough

151. ## math

Air is pumped into a balloon such that its volume increases at the rate of 75cm^3 per second. It is assumed that the balloon is spherical all the time. Find in term of pi the rate at which the radius of the balloon is increasing when the radius is 5cm.

152. ## Math 117

Why is it important to find nonperfect roots in radical form to simplify the process of performing basic operations with radical expression?

153. ## maths

at present, a firm is manufacturing2000 items.it is estimated that the rate of change of productionp w.r.t. additional number of workers x is given by dp/dx =100-12x.if the firm employs 25 more workers ,then the new level of production of items is

154. ## history

Good morning can you give me some facts about the effects of the world war 1 on New Jersey please help me

155. ## Chemistry

10.00 mL of an unknown base solution is titrated with .100 M HCl solution. The pH versus the volume of NaOH added is shown below. There is a graoh where there are two dotted lines signifying a pH: the highest at pH 6.31 and the lower at pH 3.92. What is

156. ## Chemistry

a balloon has a volume of 2.0 L at room temperature (27 degrees celsius). at what temperature would the balloon have a volume of 2.0L?

157. ## Algebra

I am having issues with factoring. I am trying to check my work using a TI84 Plus calculator but I don't know how to plug in a problem to check its factoring. Can anyone help? for example 44y^3+55y^2-11xy how can I go about plugging that in to check my

158. ## Geometry

If I have 64 ft what are all the dimension of the rectangular patios I can make using all 6 ft?

159. ## Geometry

Given the lengths of the sides of a triangle, identify the triangle as acute, right, or obtuse. 37,12,34 5,12,13 20,21,28

160. ## MATH WORD PROBLEM

Diego works at a toy store. His boss tells him to order 420 stuffed bears and toy cars. He must order 4 stuffed bears for every 3 toy cars. a) If he must order 9 large stuffed bears for every 7 small stuffed bears, how many of each stuffed bear should he

161. ## Math

Write a rule in function notation to describe transformation that is a reflection across the x-axis. A. Ry-x(X,Y) B. Rx-0(X,Y) C. Rx-y(X,Y) D. Ry-0(X,Y)

162. ## physics

which of the following would be the best example of non damped simple harmonic motion? A. mass oscillating vertically on a spring B. sound waves propagating through water C. light waves propagating through a vacuum D. guitar strings vibrating

asked by Janette isa hoe
163. ## who dare to give the answer!

i have passed class -9 with 10 CGPA.in DAV public school,and it is affiliated to CBSE.but,now i want to change my school.and take admission in class -10 in a different school,and it is also affiliated to CBSE board,under the same zone.is it possible for

asked by hurry its a question of my career.
164. ## CALCULUS problem

There are four parts to this one question, and would really appreciate if you could show and explain how you get to the answer, because I tried looking up how to find the answer myself, but nothing made sense. Thank you! 11. The region R is bounded by the

165. ## Chemistry

a.) How much energy is emitted in each alpha decay of plutonium-234 if 234Pu, 234.0433mu and 230U, 230.0338mu. b.) The half-life of plutonium-234 is 8.8 hrs. How much heat is released by the alpha decay of a 1 micro-gram sample of plutonium-234 in a

166. ## math

how do you factor: (a - b)^2 - c^2

167. ## chemistry

write a reaction that show solid copper (II) nitrate dissociating.

168. ## trig

A plane is flying due south at a speed of 192 mph. a wind is blowing in at 53 degrees at 13 mph. what is the bearing of the plane?

169. ## Algebra

Simplify the rational expression (x^2+xy-2y^2)/(x^2+3xy+2y^2)

170. ## personal finance

The interest rate is composed of _____ and the ______? a. risk-free rate,risk discount b.risk free rate, risk premium c.risk free rate, default risk premium d. none of the above

171. ## English

Do I use an apostrophe after the A or not? "He got 5 As on the final exam." I've heard that capital letters are made plural only by adding an s, but my textbook gives this example-How many A's did you write on the paper?

172. ## 5th grade math

Samara keeps her collection of hair bows in a box. She has 20 white bows, 20 red bows, 15 yellow bows, 25 green bows, and 20 pink bows. If she pulls out 1 bow at random, what is the probability the bow will be yellow? Can someone show me how to work this

173. ## English

Did I classify this sentence correctly? The (A) birds (SN)/ in (P) the (A) tree (OP) sang (V) happily (adv) during (P) the (A) day (OP).

174. ## Algebra 2

Simplify the rational expression (x^2+xy-2y^2)/(x^2+3xy+2y^2)

175. ## geometry

Mr. Franco is making a triangular cement slab and needs to set boards before he can pour the cement. He has already set two boards that are 5 feet and 8 feet in length. What is a reasonable range for the length of the third board that Mr. Franco could set

176. ## Social Studies

Hai I was wondering if you could check my answer? It doesn't really talk about this in my text book, and it doesn't really help if I look it up online. Q: Founded by the Mormons, which city was originally called Deseret? A. San Diego B. Provo C. Santa Fe

177. ## math

I have a flat piece of plywood that measures 45 inches in width and 75 inches in length. I want to cut the board into identical square pieces with the integer side lengths and use the entire piece of wood. What are the dimensions (width & length) of each

asked by He who should not be named
178. ## physic

A stationary 2.0 kg object is located on a table near the surface of the earth. The coefficient static friction between the surface is .80 and the coefficient of the kinetic friction is 0.65. A horizontal force of 5N is applied to the object. Determine the

179. ## math

What percent of 25 is 23?

180. ## Calculus

If y=cos x, what is y^(6) (x)?

181. ## math

What percent of 600 is 84?

182. ## physic

A stationary 2.0 kg object is located on a table near the surface of the earth. The coefficient static friction between the surface is .80 and the coefficient of the kinetic friction is 0.65. A horizontal force of 5N is applied to the object. Determine the

183. ## English

1. In the evening, Sonya will meet one of her friends. 2. In the evenings, Sonya will meet one of her friends. ------------------------- Thank you for your help. What is the difference between them. Does #1 mean "She will meet her friend this evening

184. ## Math

In a marketing survey involving 1,000 randomly chosen people, it is found that 630 use brand P, 420 use brand Q, and 210 use both brands. How many people in the survey use brand P and not brand Q? Answer choices: 210 people 420 people 630 people none of