1. Language Arts

Passage A Avalanches are caused by a variety of conditions. When the temperature is cold and snow falls, the snowsticks to the ground. However, when the air temperature changes, the snow may slide away in pieces or slabs. Basically an avalanch happens when

2. language arts

Avalanches happen in a series of stages. First, while the temperature is cold and there is a heavy snowfall, the snow will stick to the ground. Suppose that what happens next is that the air temperature changes after the snow has fallen. Then, a layer of

3. Language Arts

Passage A Avalanches are caused by a variety of conditions. When the temperature is cold and snow falls, the snowsticks to the ground. However, when the air temperature changes, the snow may slide away in pieces or slabs. Basically an avalanch happens when

4. Chemistry

An electron is excited from the n=1 ground state to the n=3 state in a hydrogen atom. Which of the following statements are true? Correct the false statements to make them true. A. It takes more energy to ionize (completely remove) the electron from n=3

5. language Arts

There is little if any, "storm" in the new movie Storm Fever. Aren't actors supposed to act, and aren't directors supposed to direct? Actor Robert Pierre seems to wander aimlessly around the set. And director Sue Smith can't seem to figure out how to

6. Algebra 1

The table shows the relationship between the number of players on a team and the minutes each player gets to play. Players minutes 7 35 8 30 9 25 10 20 Is the relationship a function that ism increasing or decreasing? Is the relationship a function that is

7. Algebra 1

The ordered pairs(1,4), (2,16), (3,64), (4,256),(5,1024) represent a function. What is a rule that represents,this function? My answer is y=x to the 4th power

8. Chemistry

Identify the Bronsted-Lowry acid in the following reaction. H2O (l) + HCO31- (aq) → H3O+ (aq) + CO32- (aq)

9. physics

A spring scale is calibrated from zero to 20. N. The calibrations extend over a length of 0.10 m. (a) What is the elastic potential energy of the spring in the scale when a weight of 5.0 N hangs from it? (b) What is the elastic potential energy when the

10. Language Arts

Which persuasive technique is used in the following sentence from the selection? So if you have any sense at all, avoid Storm Fever. A. Appeal to authority B. Appeal to reason C. Repition D. Rhetorical question Is the answer B?

11. Language Arts

Which of the following sentences about the selection uses the past perfect tense? A. I have planned to see the movie tomorrow B. I still plan on going to see the movie tomorrow C. I had planned to see the movie tomorrow, until I read the review D. I still

12. Algebra 1

use the vertical line test to determine if the relation(-6,-2), (-2,6),(0,3),(3,5) is a function

13. Language Arts

Passage A Avalanches are caused by a variety of conditions. When the temperature is cold and snow falls, the snowsticks to the ground. However, when the air temperature changes, the snow may slide away in pieces or slabs. Basically an avalanch happens when

14. language Arts

Which persuasive technique is used in the following phrase from the selection? The movie was advertised as "full of adventure." It isn't. A. appeal to emotion B. appeal to reason C. repetition D. rhetorical questions Is it D?

15. Language Arts

Suppose this selection is an excerpt from a biography. Which of the following changes would make it fiction rather than nonfiction? A. Transforming it into a first-person account by Louise B. Transforming it into a dialogue between Louise and a snake C.

16. sci

melissa burned her hand on the stove. why did putting her hand in a bowl of cold water make the burn less severe a. cold transferred to her hand from the water by convection. b. cold transferred to her hand from the water by conduction.

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17. Science

~~~~~~~~~~~~~~~~~~~~~~~~~Choices *Extra Words In The Word Box (Will Be Leftovers)* -Landfills -Limiting Factor -Non~point Source -Habitat Destruction -Stop -Migration -Biodiversity -Carbon Dioxide -Reverse -Carrying Capacity -Commensalism -Selective

18. calculus

I needed help with these FRQ in my APCalc course. Any help or walkthrough would be extremely helpful - thanks in advance. Let f be the function given by f(x)=3ln((x^2)+2)-2x with the domain [-2,4]. (a) Find the coordinate of each relative maximum point and

19. physics

Water flowing through a 1.9-cm-diameter pipe can fill a 500L bathtub in 5.1min. What is the speed of the water in the pipe?

20. Language Arts

Passage A Avalanches are caused by a variety of conditions. When the temperature is cold and snow falls, the snowsticks to the ground. However, when the air temperature changes, the snow may slide away in pieces or slabs. Basically an avalanch happens when

21. Chemistry 2

In a particular redox reaction, MnO2 is oxidized to MnO4– and Ag is reduced to Ag. Complete and balance the equation for this reaction in acidic solution. Phases are optional.

22. Physics

The wheels, axle, and handles of a wheelbarrow weigh W = 65 N. The load chamber and its contents weigh WL = 538 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man’s hands apply a

23. Chemistry

The color of light emitted by a hot solid object depends on?

24. History Help?

What role did Stephen Austin play in the settlement of Texas by American colonists? He defeated Santa Anna's army, making it safe for colonists in the region. He convinced American colonists in Texas to declare their independence from Mexico. He received a

25. Chem 130

Carbon monoxide burns in oxygen to form carbon dioxide. what volume of oxygen at 25 degrees Celsius and 760. mmHg is required to react with 15.0 L of carbon monoxide which id at STP?

26. science

A jellyfish can propel itself with jets of water pushed out of its bell, a flexible structure on top of its body. The elastic bell and the water it contains function as a mass-spring system, greatly increasing efficiency. Normally, the jellyfish emits one

27. Language Arts

Which verb mood is used in the following sentense from the selection? If you have any sense at all , avoid Storm Fever. A. Indicative B. Subjunctive C. Conditional D. Imperative Is the answer A?

28. physics

a net force of 100 newton's is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

29. History

Which was expected of women in the early nineteenth century? (Points : 2) working to own property obeying their husbands teaching their daughters reading and math helping their husbands make economically sound decisions Is it b?

30. Language Arts

There is little, if any,m "storm" in the new movie Storm Fever. Aren't actors supposed to act, and aren't directors supposed to direct? Actor Robert Pierre seems to wander aimlessly around the set. And director Sue Smith can't seem to figure out to present

31. Language Arts

There is little, if any,m "storm" in the new movie Storm Fever. Aren't actors supposed to act, and aren't directors supposed to direct? Actor Robert Pierre seems to wander aimlessly around the set. And director Sue Smith can't seem to figure out to present

32. Math

A box contains 4 red penciks and 6 black pencils what fraction of the pencils are red

33. aliteration

Which line from the poem includes an example of alliteration? "I tell him that my Diary is boring as a textbook." "That’s one fact that stays under lock and combination." "...where I’m the leading lady whom the characters adore." "It’s amazing, how

34. language Arts

Which phrase best describes the meaning of distinguish as it is used in the selection? A. to whish for B. to tell apart C. to feel important D. to give accolades Is the answer b?

35. Language Arts

There is little, if any,m "storm" in the new movie Storm Fever. Aren't actors supposed to act, and aren't directors supposed to direct? Actor Robert Pierre seems to wander aimlessly around the set. And director Sue Smith can't seem to figure out to present

36. chemistry

In the following reaction, how many grams of lead(II) nitrate Pb(NO3)2 will produce 425 grams of sodium nitrate (NaNO3)? Pb(NO3)2(aq) + 2 NaBr(aq) PbBr2(s) + 2 NaNO3(aq) The molar mass of Pb(NO3)2 is 331.21 grams and that of NaNO3 is 85 grams.

37. Newtons Law of Cooling

A salad with a temperature of 43F is taken from the refrigerator and placed on the table in a room that is 68F. After 12 min the temperature of the salad is 55F. What will the temperature of the salad be after 20 min.

38. Math

Samantha wants to buy 6 roses 4 carnations and 8 tulips she estimates that she will spend about 14 dollars on these flowers do you agree math chapter 5

39. chemistry

The decomposition of potassium chlorate (KClO3) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 10.2 mol of oxygen? Answer in units of mol

40. sci

a radiator is attached to a wall on one side of a room. which is mostlikely way its heat will warm the air on the other side of the room? a. by conduction b. by convection c. the warm air will sink and condense d. the warm air will rise and condense

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41. Language Arts

There is little, if any,m "storm" in the new movie Storm Fever. Aren't actors supposed to act, and aren't directors supposed to direct? Actor Robert Pierre seems to wander aimlessly around the set. And director Sue Smith can't seem to figure out to present

42. Science

Suppose that you heated a sample of a hydrated ionic compound in a test tube. What might you expect to see inside the test tube, near the top of the test tube? Explain please i really am stumped on this question...

43. famu

Construct a 99% confidence interval for the population mean, ì. Assume the population has a normal distribution. A group of 19 randomly selected employees has a mean age of 22.4 years with a standard deviation of 3.8 years. Round to the nearest tenth.

85. math

The area of a rectangular field is 96m2. The length of one side is 12m. The farmer needs to know its perimeter to work out how much fencing will be needed?

86. Physics

A jet transport has a weight of 2.03 x 106 N and is at rest on the runway. The two rear wheels are 16.0 m behind the front wheel, and the plane's center of gravity is 12.1 m behind the front wheel. Determine the normal force exerted by the ground on (a)

87. corrections

The 1910 case of weems v. United states was unique in what respect? a. it was the first time the Supreme court invalidated an excessive penalty. b. it was the only time the supreme court held that no penalty is excessive if evenly applied. c. it was the

88. pretty algebra

A commuter train pulling 8 cars had room for another 84 passengers. Halfway...

89. chemistry

How many milliliters of an aqueous solution of 0.165 M aluminum chloride is needed to obtain 13.2 grams of the salt?

90. physics

At t = 0 a block with mass M = 5 kg moves with a velocity v = 2 m/s at position xo = -.33 m from the equilibrium position of the spring. The block is attached to a massless spring of spring constant k = 61.2 N/m and slides on a frictionless surface. At

91. Math help

How many squares in this figure? (1 point) 4.) 15 5** 20 10** Crystal wants to put a fence around her vegetable garden.Her garden is 5 ft wide and 4 ft long.She plans to put a post at each corner and at every foot.How many fence posts will Crystal need? (1

92. Chemistry

I'm not sure how to set this question up... A solution containing 0.015M Sr^2+ and Ba^2+ ions is treated with Na2SO4 and a percipitate containing one metal sulfate forms. Assition of the sulfate ion continues until the more soluble sulfate salt just begins

93. physics

You test a moon buggy on earth. When the buggy hits a bump, it oscillates up and down on its springs with a period of 4 seconds. Will the period be the same when buggy is used on the moon?

94. MATH

Mimo wishes to leave a waitress a tip. Mimo has five coins in his pocket, a penny, a nickel, a dime, a quarter, and a half-dollar. If he uses exactly three coins for the tip, how many different tips are possible? A. 15 B. 5 C. 20 D. 10 Crystal wants to put

95. physics

A rock is thrown downward into a well that is 8.58 m deep. If the splash is heard 1.08 seconds later, what was the initial speed of the rock?

My college professor is a highly difficult grader and will always find a way to take her students' papers apart. Therefore, any advice regarding the following essay topic would be appreciated: How has YouTube altered our definition of creativity? (We are

97. Science

Both a father and mother have dimples. Their son has dimples, but their daughter does not. Which genes, DD, Dd, or dd, does each family member have? Father and Mother= DD Son= Dd Daughter=dd

98. MATH

Spencer wants to plant strawberries for his garden. To do this, he has to increase the garden and the fence around it. Spencer decides one side can be twice as big and the other side four times as big. One side measures 7feet long and the other side is 5

99. Maths

The first term of an AP is 12 and that of a GP is 6. The common difference and the common ratio are equal, so as are the sum of the fist 3 terms. Find the possible values of the common difference?

100. Physics

A hollow sphere has a mass of 15 kg, an inner radius of 12 cm and an outer radius of 18 cm. What is the rotational inertia (moment of inertia) of the sphere about an axis passing through its center?

101. AP Calc

The US Post Office has a limit on the size of packages it will accept for mailing. The length plus the girth must be 84 inches or less. Find the dimensions of the rectangular package with a square end, which will maximize the volume of the package.

102. CHEMISTRY

The [OH1-] with a pH of 5 is

103. early childhhod

what assists in both bone and blood formation by aiding in the absorption of both calcium and iron?

104. english

The stems measure a foot in diameter. Is measure a transitive verb? I can not get this and I can not fail this class

105. Physics

An object is placed to the left of a lens, and a real image is formed to the right of the lens. The image is inverted relative to the object and is one-half the size of the object. The distance between the object and the image is 65 cm. (a) How far from

need help on a lab here are the results Mass of empty beaker and glass rod(62.62) Mass of beaker, glass rod, hydrated copper sulfate(66.02) Mass of beaker, glass rod and anhydrous copper sulfate(65.04) Mass of hydrated copper sulfate(3.4) Mass of anhydrous

107. Math

Trey can drive his car 130 miles on 4 gallons of gas. At this rate how far can Trey drive on 6 gallons of gas?

108. Algebra 1

Write an equation that relates the number of parallelograms in the figure (n), to the perimeter of the figure (P). /_/ /_/_/ /_/_/_/ The top and bottom = 5 each and the sides = 4 each in each figure.

109. Chemistry

What is molarity of an HCl sloution if 45.0mL of 0.250 mol/L KOH are needed to neutalize 12.3mL of HCl?

110. chemistry

What mass of solute is present in each aqueous solution? 40 mL of 6.0 mol/L, H2SO4, solution Soo I did: C=n/V 40 mL= 0.04 L C= 6.0 mol/L/0.04 L = 150 mol/L MH2SO4= 2.02 g/mol + 32.07 g/mol + 64 g/mol= 98.09 g/mol mass H2SO4= 150 mol x (98.09g/1 mol) =

111. Math

A document that is 30in x 40 in is redrawn 1 1/2 scale and redrawn again at a 1/2 scale. What are the final dimensions? On this i have no clue what to do.

112. Chemistry

CuSO4.xH2O Determine the percent by mass of water in your sample of hydrated copper (II) sulfate. Show your calculations clearly. My work. i got 10% is that correct

CuSO4.xH2O Determine the percent by mass of water in your sample of hydrated copper (II) sulfate. Show your calculations clearly. My work. i got 10% is that correct

114. Calculus

consider the function f(x) = (x if xor equal to 1 Evaluate the definite integral: int_{-2}^{3} f(x)\,dx =

115. physics

The capacitance of a capacitor with a dielectric of air is 1200 pF. When a dielectric is inserted between the plates, the capacitance increases to 0.006 ìF. What is the value of e. ans= 1200/0.006=

116. Chemistry

i need help on a lab here are the results Mass of empty beaker and glass rod(62.62) Mass of beaker, glass rod, hydrated copper sulfate(66.02) Mass of beaker, glass rod and anhydrous copper sulfate(65.04) Mass of hydrated copper sulfate(3.4) Mass of

117. POL201

A federal system differs from a unitary system in that: A) power is concentrated in one central government. B) sub-governments delegate power to the central authority . C) power is distributed between the central government and other governmental units. D)

118. AP Biology

The respiration of plants is a biochemical reaction and should have a rate determined by the Arrhenius equation, k = Ae-EA/RT. Here, k is the rate, A is a constant, EA is the activation energy for the reaction, R is the gas constant, and T is the

119. Pleaaaaaase help with differential graph question

Suppose further that the population’s rate of change is governed by the differential equation dP/dt = f(P) where f (P) is the function graphed. For which values of the population P does the population increase? (b) For which values of the population P

120. Math

A giant paper football field is made for the floor of the gym. The length of the gym is 90ft. Using this same scale, what is the width of the paper football field? I am completely confused on this problem. Please help me.

121. chemistry

A solution with a pH of 7 has a [OH1-] of

122. AP Chemistry

For the reaction ?CH4+ ?O2 ==> ?CO2+ ?H2O, what is the maximum amount of CO2 (44.0095 g/mol) which could be formed from 3.67 g of CH4 (16.0425 g/mol) and 4.23 g of O2 (31.9988 g/mol)? Answer in units of g I know that you have to balance the equation, so

123. Trig

a ships navigator determines that the ship is moving through the water at 17.5mi/h with a heading of 26.3 degrees north of east but the ship is actually moving at 19.3 mi/h in a direction of 33.7 degrees north of east. What is the velocity of the current?

124. Algebra 1

What is the graph of the function rule? y=I5xI -2

125. math

Q. As a project,the fifth grade students at Scott Elementary School collected newspapers to recycle. During the first week,they collected 212 pounds of newspapers. For each of the next four weeks,they doubled the previous week's amount of newspaper

126. chemical equations

I need help figuring out how to write these chemical reactions into chemical equations Copper(II)oxide + hydrochloric acid -> copper(II)chloride + water CuO2+ HCl -> CuCl + H2O? Aluminum + copper(II) chloride-> copper + aluminum chloride Al+CuCl -> Cu +

127. physics

You have a pendulum clock which keeps using a bob on a long shaft. The clock is running slow, You can add or subtract mass from the bobs, or move the bob up and down on the shaft? What should you do to correct the time on the clock?

128. physics

A stretched string fixed at each end has a mass of 21 g and a length of 5.7 m. The tension in the string is 41.1 N. What is the vibration frequency for the third harmonic? Answer in Hz.

129. micro economic

a monopoly firm is faced with the following demand functio P=13-0.5Q the marginal cost function is given by 3+4Q and a fixed cost is 4 determine the profit maximization formula

130. Maths

how many ways can 6 coins be chosen from 20, one rupee coins, 10 fifty paise coins, 7 twenty paise coins?

131. chem due soon

The ΔH of the reaction below is -575.13 kJ. Is this reaction spontaneous? 2ZnS + 3O2 + C → 2SO2 + 2Zn + CO2 A. It is not because the ΔH of the reaction is negative. B. It is because the ΔH of the reaction is negative. C. It depends on the temperature

132. Chemistry

a gas phase compound has a density of 2.10 g/l at 751 torr and 100 c what is the molecular weight

133. General Calculus Question

On a graph what ways can it not be differentiable? I know at cusps it's not differentiable but are there other instances where it is not differentiable?

134. Chemistry

Calculate the pH of the solution that is prepared by mixing 26.06g of ammonium iodide (MM=144.942) and 5.08g of ammonia (MM=17.034g) in enough 0.066 M HCI to produce 1.00L of solution. Kb(NH3)=1.76x10^-5 I converted 24.06g and 5.08g to moles and i now I

135. genetics

A man marries a woman who is heterozygous for a recessive X-linked lethal gene "X" expressed in very early development. If the couple had many normal children, what would be the predicted sex ratio among their children? I'm so confused. If it's a lethal

136. English

1. Half of the houses in the village were burnt down. 2. Half of the houses in the village burnt down. 3. Half of the houses in the village were burned down. 4. Half of the houses in the village burned down. ------------------ Are they grammatical? Which

137. Social Studies

How did the United States attempt to stay out of European conflicts? A. By sending a limited number of troops to France. B. By proclaming neutrality and signing treaties with Britian and Spain. C. By encouraging the Native Americans to get involved

138. government

What is the tripartite view of political parties? Has this model become outdated? If so, why?

139. Math

A game is played by throwing darts at a target. A player can choose to throw two or three darts. Darcy plays two games. In Game 1, he chooses to throw two darts, and wins if he hits the target at least once. In Game 2, he chooses to throw three darts, and

140. American History

1. Reagan embraced the idea that through tax incentives the private sector would shift its resources from tax shelters to productive investment. This theory is referred to as A. supply-and-demand economics. B. neofederalism. C. deficit economics. D.

141. chemistry

write the specific heat water and liquid and gas

142. algebra

Solve for x. (Round your answer to three decimal places.) log7 x = 1/2 x=

143. English

1. If you turn right, you'll find the post office on your right. 2. If you turn right, you'll find the post office which is on your right. -------------------------- Does #1 mean #2? Or does 'on your right' modify the verb 'find'?

144. physics

You take a pendulum clock to the moon, Assuming you do not change anything about the clock, will it still keep the right time? why?

145. Math

A radio cost a company $45 to manufacture. If it sells for$97.65, what is the percent markup based on cost.

146. Policing

The due process model of criminal justice asserts all of the following except: a. the gov. job is to maximize freedom and opportunities for all citizens which included protecting people from undue gov. influence b. all suspects are innocent until proven

147. Math

You need 2 cups of orange juice to make 3 quarts of punch. How many cups of orange juice do you need to make 3 gallons of punch?

148. Corrections

Prisoners who petition that their civil rights have been violated most frequently cite all of the following concerns except a. due process. b. inadequate medical treatment. c. physical security. d. ineffective assistance of counsel. im confused between B

149. MATH

multiply (-3-m)(3+m)

150. Math

If \$37,500 is invested at 6.3% for 30 years, find the future value if the interest is compounded annually,semiannually, quarterly, monthly

151. Essentials of Financial Lit

I need help with my homework. I saved it to a word document because its wordy. I can email it

152. Math

1. A town has a population of 100,000 now and the population is increasing 10% every year. What will be the population in 5 years? 2. How many poles will be in a pile of telephone poles if there are 30 in the bottom layer, 29 in the second, and so on,

153. math

The line segment joining ( -3,-4) and (6,11) is to be divided in to three (3) equal parts. Find the coordinates of the point of the part closest to (-3,-4). Please help me..

154. Algebra 2

Solving Quadratic Systems x^2+y^2=20 x^2-6y=28 PLEASE SHOW WORK I'M HAVING TROUBLE SOLVING IT

155. falaq

Muslim experts in falaq have produced salat timetables for the convenience of the ummah. a.Naturally they would have certain error margins.If, say for example the error is about 2 minutes. The time for asr is 430 pm. Is it then possible to regard the

156. College Geometry

A tipi is a portable structure made of poles and covered in hides. Native American tipis varied in size and the number of poles used. A 12-pole tipi framework is shown in the following figure. The framework of a tipi lean toward the west so the apex was

157. physics

2. You push a 2.0 Kg block against a horizontal spring (the spring constant is k=200 N/m) compressing it by 15 cm. Then you release the block and the spring sends it sliding across a tabletop. The block stops 75 cm from where you released it. (a) Find the

158. english

i have been at this for a while now and i cant get it. People use bamboo in many ways. the verb is use so is use transitive?

159. Maths

Let f(x)= x^5-5x+3 1-Find f'(x) and f"(x). 2-Find the intervals on which f(x) is increasing or decreasing. 3-Find the local maximum and minimum of f(x), if any. 4-Find the intervals on which the graph of f(x) is concave up or concave down. 5-Find the

160. Chemestry

Calculate the density of an object with a mass of 2.14g and a volume of 11.40mL.

161. physics-finding velocity

A small block of mass .450 kg is sliding down a ramp inclined at an angle of 53 degrees to the horizontal. it starts to slide from a vertical height of .65 meters. Find the Velocity when it slides off the ramp. The way I approached this problem was by sing

162. english

That time of year thou mayst in me behold When yellow leaves, or none, or few, do hang Upon those boughs which shake against the cold, Bare ruin'd choirs, where late the sweet birds sang. 5In me thou see'st the twilight of such day As after sunset fadeth

Question- These plants thrive in warm climates. My answer please tell me if i'm right- The verb is thrive- Is thrive a transitive or intransitive verb? I put intransitive, am i right?

165. Chemistry

Chemistrywhat is the weight of 1 atom of H in gram (at.wt Of h = 1.008) ?

166. math

what is the number 8

167. college algebra

Find the Inverse (x)=√2x+9

168. Rounding up and down

1. Lily moves 0.337 tonnes of sand to make a sandpit how much is this to two decimal places? 2. Lily moves 0.5 tonnes of pebbles to decorate the flower bed. If this mass has been to one decimal place, which of these could be the actual mass of pebbles? A

169. English

1. The exam had already started when I entered the classroom. 2. The exam had already begun when I entered the classroom. ---------------- Are both grammatical? Which one is commonly used?

170. chemistry

A mixture of 94.6g of O2 and 82.2g of Ne is placed in a 200.0L container at 250K . What is the partial pressure of O2 in atmospheres?

171. Chemistry

Given the following equation: N2 (g) + 3H2 (g) → 2NH3 (g) ΔH = -92.6 kJ Calculate ΔH (in kJ) for the decomposition of 30.5 g NH3 (g) into N2 (g) and H2 (g)

172. Physics

A plastic bag is filled with nitrogen at atmospheric pressure and 22.0 oC. Assume that the mass of the bag is negligible and take the temperature of the outside air to be 0 oC. With the help of this "balloon" we want to lift a 50.0 kg girl off her feet.

173. Chemistry

A student dissolves 22.4 g of sodium phosphate to prepare a 2.98 L solution. Another student then dilutes this solution to 4.90 L. If sodium phosphate completely dissociates, determine the number of mols of each ion in the final solution.

174. English

1. He has watched the World Cup for 3 hours. 2. He has been watching the World Cup for 3 hours. ---------------------------- Are both grammatical? Which one is commonly used?

175. chem due soon

At temperatures above 0°C, what is the sign of the change in free energy for the conversion of liquid water to ice? A. Positive B. Zero C. Negative D. Not known

176. Physics

bob drop a rock from a height of 4.5 m. (the acceleration due to gravity is 9.8 m/s^2) 1.at s the initial speed of the rock 2. how long is the rock falling before it hits the ground c. what is the final speed of the rock? [I have trouble with c) My work:

177. math

a cyclist is travelling with an average velocity of 5.9m/s [w]. what will be his displacement in 1.5 h? please show steps to answer-I tried but couldn't find the answer :(

178. math

translate and solve please. five times two less than a number equals seventeen. find the number

179. Math

Set up and solve a system of equations to solve the application. A rectangular area of 525 square feet is enclosed using 100 feet of fence. What are the dimensions?

180. physics

Melaine, Kristin, and Elizabeth's 0.39kg batman is accelerated across a frictionless fishing line from rest to a speed of 15m/s in 1.5 m. How much power is exerted on "Batman"?

181. Math

consider the function f(x) = (x if xor equal to 1 Evaluate the definite integral: int_{-2}^{3} f(x)\,dx =

182. english

Whenever Richard Cory went down town, We people on the pavement looked at him: He was a gentleman from sole to crown, Clean favored, and imperially slim. And he was always quietly arrayed, 5 And he was always human when he talked; But still he fluttered

183. math

Estimate then find each product. Simplify 7 4/5×2 1/3 Is the answer 18 1/5

184. MATH

multiply 8(m-n+8)

185. Math

Round the larger factor to the graetest place. 55*4 round 50 *4 993*6 rounds to 1,000*6 735*3 rounds to 700*3 1,914*3 rounds to 2,000*3 4,722*6 rounds to 5,000 495*3 rounds to 500*3 Please ,, My answers : true or false

186. American National Government

Despite the greater federal authority in the federal relationship, federalism is still important for all the following reasons except that: A)it provides the best means of developing a vast country because it allows for experimentation. B)it may stimulate

187. POL201

In Ronald Reagan’s version of new federalism, the goal was to return power back to the states through @The answer can be found in “New Federalism II, 1982-Present.” A) deep cuts in federal spending. B) the Great Swap. C) orders to the states to take

188. math....

-p(p-q+8) multiply

189. math

Estimate. Then find each product. Simplify 6 1/3×1:5/6 Is the answer 11 11/18

190. math

how do i convert fractions to decimals and fractions to percents?

191. English

Is the following sentence a transitive verb? The strawberries contained vitamin c?

192. calculus

Let f'(x)=4x^3-12x^2. (a) find three different functions with derivative equal to f'(x). how are the graphs of the three functions related? the only one that i can figure out is: f(x)=x^4+4x^3+y where y can equal any constant. any help on figuring out the

193. Calculus

Differentiate. e^cos(x^2+1) Is the answer -2xe^cos(x^2+1) sin(x^2+1)?

194. Calculus

Water is being poured into a spherical bowl of radius 4cm at a rate of 2cm3/s. How fast is the water level rising when it is at 2cm?

195. math

Estimate the product then complete the multiplication 5 4/5× 7/1. Is the answer 203/5

196. algebra 2

Solve for x. 250= (13+x)^2

197. band essay-Ms. Sue

Who wouldn’t want the chance to go to Puerto Rico? I have been excited for this band trip opportunity since it was introduced last winter. A once in a lifetime opportunity to share my love of music and explore another culture is an eyeopening experience!

198. calculus, help!

Evaluate the definite integral: int_{1}^{e^9} \frac{dx}{x \sqrt{\ln x}} = i gt my answer as 1^(e^9) but it's saying it's wrong

199. CHEMISTRY

What is the pH of a solution with [H3O+] = 1 x 10-9 M? My answer is pH=9. is that correct

200. Math Proof

prove f(x)=b^x is continuous on (-infinity,infinity) i.s at all a exist in reals. here assume b does not equal 1, but b>0

201. maths

The area of a rectangular field is 96m2. The length of one side is 12m. The farmer needs to know the perimeter to find out how much fencing will be?

202. english

People use bamboo in many ways. The verb is use. My answer is intransitive verb. Am i right?

203. physics

Elephants communicate via infrasound, at frequencies as low as 11 Hz that can travel up to 9 km. The intensity of these sounds can reach 106 dB, measured a distance of 4 m from the source. a) Determine the intensity level in W/m2 of the infrasound at 4 m

204. Algebra 2

Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 Please show work I'm having trouble solving it

206. Math

Hannah made 4 cups of pudding. If she served 2/3 cup of pudding to each of her dinner guest, how many guests did she serve?

207. Precalc/Trig

I have no idea how to solve this one problem: Round to two decimal places. Two observers 25 feet apart, sight to the top of the tree. If the angle of elevation to the top of the tree from the observer closest to the tree is 30 degrees and the angle of

208. Physics

Two sounds have measured intensities of I1 = 110 W/m2 and I2 = 330.00 W/m2. By how many decibels is the level of sound 1 lower than that of sound 2? Answer in dB.

209. physics

An airplane traveling at v = 163 m/s emits a sound of frequency 1730 Hz. At what frequency does a stationary listener hear the sound as the plane approaches? Use 340 m/s for the speed of the sound and answer in Hz.

210. Math Proof

Prove f(x)=b^x is continuous on (-infinity,infinity) i.e. a exist in the reals. here assume b does not equal 1, but b>0

211. biology

which is true about the inside of a cell? -the inside of an animal cell contains structures that carry out specific jobs for the cell, but no water or molecules dissolved in water -the inside of an animal cell contains water, molecules dissolved in the

212. physics

a force of 20 n acts on a 5 kg block. calculate the acceleration of the object.

213. physics

if a force of 3000 n can move a crate at an acceleration of 10 m/s2, what is the mass of the object

214. science

An electron of mass 9.11 × 10-31 kg and charge 1.6 × 10-19 C passes through a cathode ray tube with a velocity of 3.7 × 107 m/s. It enters a magnetic field of flux density 0.47 mT at a right angle. What is the radius of curvature of the path in the

215. chemistry

Democritus- example and picture is it an atom and a picture of a atoms that she wants?? Did he rely on experimental evidence to justify his ideas? yes he gave an image of an atom that distinguished them from each other by their shape, size, and the

216. ethics

Which of the following answers to the meaning of life did Tolstoy hold prior to his change of heart and mind?

217. Maths

The nth term of a series is 2^n-1 +5n. Find the sum of the first n terms. (Hint: This is an expression in terms of n).

218. Stats

The produce manager of a grocery store claims granny smith apples weight a mean of four ounces. The sample size is 10 apples (1,6,22,35,39,53,62,64,66,77) the alpha value will be 0.05.

219. physics

A child on a barber shop spins on a stool. If the child turns counterclockwise through 8.0 radians at a certain time and with an angular velocity of 2.56 rad/s. What is the time interval in minutes when the child turns?

220. Math

What is the first step in solving the equation? 3/4 divided by 2/3 Is the answer multiply

221. Algebra

A recipe for a home-made disinfectant calls for adding one-half cup of clorox to one gallon of water. Mrs. Jenkins wants to make this solution in a 32-ounce spray bottle. How many fluid ounces of clorox should be added to 32 fluid ounces of water to have

222. Corrections

The service of day reporting centers typically would not include a. counseling. b. drug testing. c. surveillance. d. residential care. is it D

223. math

how do I rearrange the equation a=d/t if I want to find d?

224. POL 201

Despite the greater federal authority in the federal relationship, federalism is still important for all the following reasons except that: A)it provides the best means of developing a vast country because it allows for experimentation. B)it may stimulate

225. Algebra

Find the real zeros of f. (Enter your answers as a comma-separated list.) f(x) = −x2 + 7x + 8x X =_____ Find the x-intercepts of the graph of f. (x, y) =_______(smaller x-value) (x, y) =_______(larger x-value)

226. english

The night has a thousand eyes, And the day but one; Yet the light of the bright world dies With the dying sun. The mind has a thousand eyes, 5 And the heart but one: Yet the light of a whole life dies When love is done. The Rhyme Scheme of the first 4

227. mathematics

In an ap d sum of d 1st ten terms is 50 nd d fifth term is 3times the 2nd term.find the first nd d sum of d 1st 20 terms

228. Chemistry

A student places 0.025 moles of solid sulfur and 0.100 moles of nitrogen monoxide gas in a closed 1.00L container and 0°c for several days. Calculate the number of molecules of NO in the 1.00L container after equilibrium is reached, given the following

229. Chemistry

what is the molar concentration of h2so4 solution is 2.0ml of which is completely neutralized by 45.0ml of 0.115 mol/L NaOH solution?

230. Algebra 2

Solving Quadratic Systems x^2+y^2=2 x^2-6y=10 I'm having trouble solving this problem.

231. Physics- formula help

How do you calculate air resistance on an object if you have how much the object weighs and the acceleration?

232. math

Find the Inverse: f(x)=√2x+9

233. History Day

I was wondering if anyone knows what the least commonly done projject for History Day is?

234. French

How do I say I'm in high school in French? Je suis en lycée?

235. chemistry

Version A formular: 3Zn(OH)2 + 2Zn(CO)3(s)----------------------------->5ZnO(s)+2CO2(g) +3H2O(g) 105.4mL of Co2(g) was generated with a pressure of 765.5mm Hg for the gas. The temperature of the apparatus was 25.0C. How much zinc oxide would be left in

236. Physics

Find the capacitance of a parallel plate capacitor if 1400 ìC of charge are deposited on its plates when 20 V are applied across the plates.

237. Chem

The acidic H is almost always attached to an Oxygen Why is that?

238. sci

can we predict when a hurricane comes. how

239. science

What is the difference between sexual reproduction and asexual reproduction?

240. Math

At the start, a biologist counts, m, microbes in a sample. Every day after that, the number of microbes in the sample is multiplied by N.

241. Social studies

What was Socrates criticism of democracy?

242. Physics

We always hear people say “You should conserve energy! Think of what will happen to the next generation if all our energy resources get depleted!” Is this in contradiction with the Law of Conservation of Energy which states that the total amount of

243. Math

What is the rule for this function? input 2 output 5 ,input 4 output 13, Input 6 output 21, Input 8 output 29, Input 10 output 37 Please help now thanks

x^2-18x-40=0

245. Math

Two ships are moving toward a rendezvous point. Ship A is 5km east and 4km north of the point Ship B is 1km west and 2km north pf the point. How many km part are the two ships? Please . I really need your help

246. science

when do huricanes happen??

247. Chemistry

To a mixture of NaCl and Na2CO3 with a mass of 1.300 g was added 55.00 mL of 0.243 M HCl (an excess of HCl). The mixture was warmed to expel all of the CO2 and then the unreacted HCl was titrated with 0.100 M NaOH. The titration required 7.40 mL of the

248. movie

Breakfast at Tiffany's. ----------------- This is a movie. By the way, what does Tiffany's"mean? Is it a place, a house, or a city?

249. Math

On Monday, thirty percent of the pies sold at the pie store were apple. If 24 apple pies were sold on Monday, how many of the other pies were sold that day? I think I should start with 30/100 and 24/x but I am not sure. =80

250. Chemical Engineering

What are the ways to split a mixture of benzene and methanol into its component using a 2 phase system separation ? Thank you

251. Chemistry

A student weighs out 15g of the hydrated salt KCl (this is KCl and water) and heats it till a constant mass of 12 grams remains. What percent of the salt was water?

252. saraswati shishu mandir

alumino is diagonally related to

253. Genetics

Why is DNA replication termed semi conservative?

254. Math

4+8+12+16+............+64=?

255. english

what are the ideas proposed in “Civil Disobedience.” I need to choose one and make a letter.

257. government

What is the tripartite view of political parties? Has this model become outdated? If so, why? i got the first part the second part id

258. Math

How to check 4=-2(4.5p+25) so the answers both check out and equal each other?

259. science

Wood fragments from the floor of a palace in Syria - Syro-Hittite period. Date: 675 ± 50 years BCE?

260. Policing

the "blue flu" was an incident where members of a police department: a. called out sick in a form of protest b. were at risk for contracting the flu c. were evaluated for depression and stress d. missed work to attend a police officers funeral im confused

261. Maths

the number of non negative integral solutions of x + y + z ≤ n

262. math

A recipe for a home-made disinfectant calls for adding one-half cup of clorox to one gallon of water. Mrs. Jenkins wants to make this solution in a 32-ounce spray bottle. How many fluid ounces of clorox should be added to 32 fluid ounces of water to have

263. Calculus

Estimate the area under the graph of f(x)= x^2 + 2 x from x=1 to x=5 using 4 approximating rectangles and left endpoints.

264. Algebra

A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7) on the growth of a bacteria culture. The table below gives the measurements of different cultures, in thousands of bacteria,

265. algebra

using long division (x^6 - 4x^5 -7x^3) / (2x^3)

266. Calculus

Which of the following functions does not have a derivative of zero? A. y=-1/100 B. y=4(pi)^2-9 C. y=sin^2x+cos^2x D. y=cscxtanxcosx E. All do

267. physics

You create a plot of T2 (in s2) vs mass (in kg) and the linear fit of your graph gives a slope of 0.12735 ± 0.01234. What is the value of the spring constant you took the data with? i am not sure what to do. i know the k=1/slope but im not sure how to

268. help

can we predict when a hurricane will occur

269. Math

Evaluate these problems: 1.) Sin=1/7 Find csc= 2.) tan=2/3 Find cot=

270. Physiology

What would be (3) world arguments for birth control and two (2) world arguments against birth control?!

271. english

Is the word "think" a transitive or intransitive verb?

Which of the following is equal to 1/6÷1/18? Assume the shapes are rectangular. A) The width of a 1/6 square yard tile border that is 1/18 yard long. B) The width of a 1/18 square-meter flower bed that is 1/6 meter long. C) The area of a planter that is