# Questions Asked onMarch 9, 2011

1. ## physics

Determine the resulting temperature when 150g of ice at 0°C is mixed with 300g of water at 50°C

2. ## Chemistry

consider the equation for the following reaction at equilibrium. X+Y2Z+heat the concentration of the product could be increased by 1.adding a catalyst 2.adding more heat to the system 3.increasing the concentration of Y 4.decreasing the concentration of X

3. ## Physics

A 50.0 kg diver steps off a diving board and drops straight down into the water. The net force when in the water is an upward 1450 N. If the diver comes to rest 5.0 m below the water's surface, what is the total distance between the diving board and the

4. ## General Chem II

When the equation Cl2 ---> Cl- + ClO3- (basic solution) is balanced using the smallest whole-number coefficients, the coefficient of OH- is??

5. ## Chemistry

what is the numerical value of the equilibrium constant Kgoal for the reaction CO2(g) C(s) +O2(g)? by making use of the following information: 1. 2CO2(g)+2H2O(I) = CH3COOH(I)+2O2(g), K1=5.40x10^-16. 2. 2H2(g)+O2(g) = 2H2O(I), K2=1.06x10^10. 3. CH3COOH(I) -

8. ## physics

The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.6 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times

9. ## physics

A child and sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?

10. ## science

what is the mole ratio of C5H12-> C5H8 + 2H2?

11. ## chemistry

Calculate the volume needed to dissolve 11.2g CuSO4 to prepare 0.140M?

12. ## AP Physics

Two radioactive isotopes are extracted from spent nuclear fuel and placed in a metal container, which is then sealed and deposited in a nuclear waste disposal facility. The graph above shows how many nuclei of isotopes 1 and 2 remain as a function of time.

13. ## Math (Trig.)

A boat sailing from A to B travels in a straight line until the captain realizes he is off course. The boat is turned through an angle of 60 degrees, then travels another 10 km to B. The trip would have been 4 km shorter if the boat had gone straight from

14. ## Alg 1

The popultion of Medford High is 800 students & the population of WEstville High is 1240 students. Medfords pop. has been increasing by 30 students per year, while westville has been decreasing by 25 students per year. In how many yearas will the

15. ## Chemistry

How many moles of helium are contained in a 5.00-L canister at 101 kPa and 30.0 degrees Celsius? I don't understand how to get the answer. My teacher didn't explain the work she just gave me the answer.

16. ## Statistics

Recently, a case of food poisoning was traced to a particular restaurant chain. The source was identified and corrective actions were taken to make sure that the food poisoning would not reoccur. Despite the response from the restaurant chain, many

17. ## physics

A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.5 m/s as in the figure below. If his speed is 27.1 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.

18. ## Auburn University

Two 95.0 W (120 \rm V) lightbulbs are wired in series, then the combination is connected to a 120 V supply How much power is dissipated by each bulb?

19. ## Chemistry

If a catalyst is added to a system at equilibrium and the temperature and pressure remain constant there will be no effect on the: (1) rate of the forward reaction (2) rate of the reverse reaction (3) activation energy of the reaction (4) heat of reaction

20. ## Calculus

Find the domain of the following function h(x,y) = sqrt(x-9y+5)?

21. ## chemistry

How many grams of sodium chloride are needed to prepare 250 mL of a 2% solution?

22. ## Chemistry

In a reversible reaction, chemical equilibrium is attained when ? 1. Rate of the forward reaction is greater than the rate of the reverse reaction. 2. Rate of the reverse reaction is greater than the rate of the forward reaction, 3. Concentration of the

23. ## PreAlgebra

If x=yz, which of the following must be equal to xy? a. yz b. yz^2 c. y^2z d. z^2\y

63. ## geometry

A segment 12" long is divided into two segments having lengths in the ratio of 2:3. Find the length of each segment. (Hint: Let 2x and 3x represent the length of the parts.) x = ? segment 1 = (2x) = ? inches segment 2 = (3x) = ? inches

64. ## basics and tools of floral design

a pick machine affixes a

65. ## MATH

Erika spent 5/6 hr on her computer visiting the history channel and the discovery channel websites. She spent 1/5 hr at the history channel website. How many hours did she spend at the discovery channel website? please help I have no idea where to begin

66. ## MATH

IN 10 FREE THROWS, PAMELA MADE 3 SHOTS. WHAT IS THE EXPERIMENTAL PROBABILITY THAT PAMELA WILL MAKE HER NEXT FREE THROW?

67. ## physics

How much heat is absorbed by an electric refrigerator in charging 2 Kg of water at 15°C to ice at 0°C?

68. ## physic

A car is driven east for a distance of 44 km, then north for 25 km, and then in a direction 27° east of north for 28 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's

69. ## statistics

Let X be the average of a sample of 16 independent normal random variables with mean 0 and variance 1. Determine c such that P (X< c) = .5

70. ## statistics

Many companies today have a mandatory drug testing policy for their employees. To minimize the cost of testing, sample from 6 people are combined. If the mixture tests negative then all 6 individual employees are also negative. Find the probabilty of a

71. ## goemetry

A segment is divided into two parts having lengths in the ratio of 5:3. If the difference between the length of the parts is 6," find the length of each part. x = ? segment 1 = (5x) = ? inches segment 2 = (3x) = ? inches

Which sentence below has an underlined action verb? A. The poem "Easter Wings" is written in the form of wings. ("is" is underlined) B. "Paradise Lost" is an allegory. ("is" is underlined) C. In "Meditation 17," Donne compares man to an island. ("compares"

73. ## Science

when a kayak races downstreamm, its speed is clocked at 3 m/s. How far does the kayak travel in 35 s? in 1 hour?

74. ## geometry

Suppose the dimensions of a rectangle with a perimeter of 22 inches are tripled. Find the perimeter of the new rectangle in inches.

75. ## Chemistry

Can Fe2+ and Mn2+ be separated by precipitating FeS(s) and not MnS(s)? Assume [Fe2+]=[Mn2+]=[H2S]=0.10 M. Choose a [H3O+] that ensures maximum precipitation of FeS(s) but not MnS(s). Will the separation be complete? For FeS, Kspa = 6x10^2 ; for MnS, Kspa =

76. ## Calculus

A projectile is launched at an angle of 60 degrees to the horizontal from 6.5 ft above the ground at an initial speed of 150ft/sec. Assume the x-axis is horizontal, the positive y-axis is vertical (opposite g), the ground is horizontal, and only the

77. ## Math

Alyssa is a chemist with Gemco Pharmaceutical Company. She needs to prepare 12 ounces of 9% hydrochloric acid solution. The only solution she currently has available are 4% and 12% hydrocholoric acid. How much should she use of each solution to obtain the

78. ## math

I MUST DRAW TWO CARDS WHOSE SUM IS NINE, FROM A STACK OF CARDS NUMBERED ONE THRU TEN. AFTER THE FIRST DRAW, I REPLACED THE CARD AND SHUFFLE THE STACK AGAIN FOR THE SECOND DRAW. WHAT IS THE CHANCE THAT MY TWO CARDS WILL HAVE A SUM OF NINE IF I DREW

79. ## English

I forgot to include these last two sentences. 1) Slaves worked either on sugar cane plantations (better of sugar cane) or in their masters' houses. If they rebelled, they could have an ear cut off or be killed. 2) For them the only way to escap ws the

80. ## chemistry

a weak acid has a pKa of 6.0. what is the ratio of conjugate acid to conjugate base at pH 5?

81. ## chemistry

When a solution is diluted with water, the ratio of the initial to final volumes of solution is equal to the ratio of final to initial molarities. true or false?

82. ## physics

i posted this before but no one answered. please help me: A net force of 1.6×10−15 N acts on an electron over a displacement of 5.0 cm, in the same direction as the net force. (a) What is the change in kinetic energy of the electron? (b) If the electron

83. ## College Math

Use the functions to find the stopping distance on wet pavement and dry pavement for a car traveling at 55 MPH.Identify the graph for each stopping distance.Explain how well your answers to item 1 model the actual stopping distances shown in Figure 3.41 on

84. ## FRENCH

Okay so for this question Qu'est-ce que tu viens de faire aujourd'hui? Je viens de parler au Francais. D'après toi, est-ce qu'il faut être content(e)? Oui, d'après moi, il faut être riche pour être content. Est-ce que tu as une amie qui est souvent en

85. ## PHYSICS

A plank of uniform construction 5 metres in length and of mass 25kg. is balanced on a sawhorse stand which acts as a fulcrum. a bag of sand having a mass of 20kg. is suspended from one end of the plank. on the other end of the plank, a concrete block of

86. ## college physics

two balls of equal mass,moving with speeds of 5 meter/seconds,collide head on.find the velocity of each after impact if (a)they are stuck together (b)the collision of perfectly elastic. (c)the coefficient of restitution in 1/3?

87. ## calculus

how can I determine the domain of a function h(x): integrate from 0 to 2x-1 f(t)dt, when the f(x) function is a graph shown and equations for both semicircles in the graph are: square root of 4x-x(squared) and for the second one -square

88. ## chemistry

What is the pH of a solution made by dissolving the 37 g of KOH in 500 mL of water, with no buffer in it?

89. ## science

Thank you so much, Ms. Sue. Is this correct? A family backpacking at yosemite took 5 hours to climb a mountain trail 7.5 km long. What was the family's average speed? I did it like this. speed=7.5km/5h = 1.5km over h. Is this right? Thank you - why am i so

90. ## Newton' law of motion

A resultant force of 50N pulls a body of mass 10kg along a smooth horizontal surface. Calculate the acceleration with which the body is moved

91. ## Biology

We extract energy from macronutrients primarily from which of the following types of chemical reactions?

92. ## Economics

Could you give me two reasons why it is a good idea for the BBC to be funded through advertising. I have already got that it generates a higher amount of revenue. Also could you give me two reasons why it is not a good idea for the BBC to be funded through

93. ## Math

how many degrees does the hour hand move in 6 hours?

94. ## physics Dx

Compute the de Broglie wavelength associated with a ping-pong ball that is moving with a velocity of 4 meters per second. The mass of the ping-pong ball is 20 grams

95. ## Trigonometry

I have some trigonometric equations to do, but I'm pretty lost, and I have to get them done in a timely fashion, so any help would be much appreciated. "Solve the following trig equations. Give all the positive values of the angle between 0 degrees and 360

96. ## science

need to unscramble these letters to make a four word message using this pattern xxxxx xxx xxx xxx letters are teeuobftrdhsye or teeuobflrdhsye please help

97. ## chem

...A dioxin-contaminated water source contains 0.044% dioxin by mass. How much dioxin is present in 6.5 L of this water? (Assume that the density of the solution is 1.00 g/mL.) thanks

98. ## high school chem

How many grams of a stock solution that is 92.5 percent h2s04 by mass would be needed to make 250 grams of a 35% by mass solution?

99. ## Calculus

find the intervals where the function is increasing and the intervals where it is decreasing f(x)= (x^3/3)-(x^2/2) ok i found its derivative which is (f1(x)=(x-1)x my options are increasing a) (0,infinity) b) (-1,0) c(-infinity,0)U(1,infinity) decreasing

100. ## lang

What is preposition phrase in the follow sentence: When you are seasick, you are not really sick from the sea.

101. ## Alg 1

A farmer has 165 feet of fencing material in which to emclose a rectangle area. He wants the length x to be greater than 50 feet and width y to be no more than 20 feet. write a system to represent this situation.

102. ## algebra

Find the maximum value of the objective function z=24x+7y subject to the following constraints: 1. 0¡Üx¡Ü10, 0¡Üy¡Ü5. 3x + 2y ¡Ý 6

103. ## Child Care

1. The interaction between a child's biological makeup and the environmental influences that affect his or her development and behavior is called the a) balanced systems approach b) ecological systems theory c) body in the classroom analysis d) me/them

104. ## Physics

On a dry road, a car with good tires may be able to brake with a constant deceleration of 4.17 m/s2. (a) How long does such a car, initially traveling at 22.4 m/s, take to stop? (b) How far does it travel in this time?

105. ## Calc.

Differentiate. y= (cos x)^x u= cos x du= -sin x dx ln y = ln(cos x)^x ln y = x ln(cos x) (dy/dx)/(y)= ln(cos x) (dy/dx)= y ln(cos x) = (cos x)^x * (ln cos x) (dx/du)= x(cos x)^(x-1) * (-sin x) = - x sin(x)cos^(x-1)(x) (dy/dx)-(dx/du)=

106. ## physics

A ^9 Be nucleus containing four protons and five neutrons has a mass of 1.50×10−26 kg and is traveling vertically upward at 1.70 km/s. If this particle suddenly enters a horizontal magnetic field of 1.25 T pointing from west to east, find the direction

107. ## trig

I need to state the period and 2 consecutive asymptotes on the graph for the following questions. 1: y = -3 tan pi*x period: pi (?) asymptotes: ? 2: y = 2 sec 4x period: ? asymptotes: ? 3: y = csc (x/3) period: ? asymptotes: ? 4: y = 3 cot (pi*x/2) period:

Does anyone know of a good short story that has to due with confidence or dedication? If so do you know the website where i can read the story? Thanks

109. ## English

Please check for any errors. Let me know if i need to place commas anywhere or delete. Attached are the Widget Sales figures for the past six months. My principle concern is the lack of effectiveness of the sales manager in the Southwest Division. The

110. ## science

Thank you. I don't know if this one is right- At the speed of 2.5m/s, how many seconnds will it take the kayak to run a 4,500 m course? what is the speed of the kayak in kilometers per hour? speed= 4,500km/2.5h*60min/1 h =270,000/2.5=108,000km/h Thank you

111. ## Chemistry

A mixture containing CH3OH, HF, CH3F, and H2O, all at an initial partial pressure of 1.04 atm, is allowed to achieve equilibrium according to the equation below. At equilibrium, the partial pressure of H2O is observed to have increased by 0.43 atm.

112. ## Logarithms

I'm working on logarithmic equations and I'm stuck on how my book arrives at the next step. First, they use the change of base formula on, log(sqrt(2))(x^3 - 2) (sqrt(2)) is the base,changing to base 2 log(sqrt(2))(x^3 - 2)= log2(x^3 - 2)/(log2(sqrt(2)) I

113. ## science

how much of a 0.225 M KCl solution contains 55.8g of KCl

114. ## Physics

I am a little confused about kinetic and potential energy regarding roller coasters. I understand that the first hill has to be the highest to gain the potential energy (PE). I hope someone can help with this example I just made up to help me understand:

115. ## physics

A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 270 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +2.9 m/s relative to the shore, and then hops onto an identical

116. ## Chemistry

Why is potassium hydrogen phthalate (KHP) a primary standard but sodium hydroxide is not?

117. ## Chemistry

Determine the volume (in mL) of 0.844 M hydrochloric acid (HCl) that must be added to 38.0 mL of 0.650 M sodium hydrogen phosphate (Na2HPO4) to yield a pH of 6.92. Assume the 5% approximation is valid and report your answer to 3 significant figures. Look

118. ## trig

solve each equation for 0 less than or equal to x greater than 2ð. cot²x-cscx=1 thanks:) step by step please :)

119. ## literary

Give examples of literary and non-literary prose by citing examples from any source of your choice - 350 words (you may quote the source).

120. ## Mathematics .

I need some help with this specific question. In a computer catalog, a computer monitor is listed as being 19 inches. This distance is the diagonal distance across the screen. If the screen measures 10 inches in height, what is the actual width of the

121. ## chemistry

Calculate the molarity of each of the following solutions. 1. 61.9 g of C2H6O in 3.4 L of solution

122. ## Chemistry

A student titrates 0.100M KOH into 50.00 ml of weak acid HX. The pH of the solution is 4.25 after 20.00 ml of the base has been added, and equivalence point is reached when 40.00 ml of the base is added. 1. What is the concentration of the acid, HX ? 2.

123. ## Statistics and Probability

A computer supply house receives a large shipment of blank CDs each week. Past experience has shown that the number of flaws per CD can be described by the following probability distribution, where the random variable X represents the number of flaws per

124. ## Chemistry-help needed

0.3g of clotrimazole (C22H17ClN2) was dissolved in 80ml of anhydrous acetic acid. This was titrated with 0.1M perchloric acid using 0.3ml of naphtholbenzein as indicator until the colour changes from brownish-yellow to green. 1ml of 0.1M perchloric acid is

125. ## physics

A ball moving with a speed of 26 m/s strikes an identical ball that is initially at rest. After the collision, the incoming ball has been deviated by 1 = 50° from its original direction, and the struck ball moves off at 2 = 29° from the original

126. ## Geometry

Find the length of the altitude of an isosceles triangle if one side has a length of 20 ft and a base of 14 ft?

127. ## math

a college conducted a survey and determined that 68% of the students attending the college owned a car.what is the ratio of the number of students who own cars to total numbers of students

128. ## URGENT CHEMISTRY

A solution of hydrogen peroxide is 24.26% by mass and has a density of 1.11g/cm^3. the molarity of the solution? 7.54M .273M 8.03M 8.37M none of these

129. ## physics

A ball moving with a speed of 26 m/s strikes an identical ball that is initially at rest. After the collision, the incoming ball has been deviated by angle 1 = 50° from its original direction, and the struck ball moves off at angle 2 = 29° from the

130. ## Calculus

Find the derivative of y=cos^6w+cos(w^6) The answer I have is -6(cosw^5sinw+wsin(w^6)) but it's not right...

131. ## Geography/History

I'm doing an alternate test on Sub-Saharan Africa, and Africa. I cant find all the answers in the book, and i can't find a good website. Can someone help me find a good website for Sub-Saharan Africa?

132. ## accounting

Lone Star Theatre Inc. owns and operates movie theaters throughout Arizona and Texas. Lone Star Theatre has declared the following annual dividends over a six-year period: 2005, $7,500; 2006,$9,000; 2007, $30,000; 2008,$30,000; 2009, \$40,000; and 2010,

133. ## Geometry

"Find the length of the altitude, x, to the nearest hundredth of a meter." The base of the triangle is 14 feet.

134. ## physic

How much work does gravity do on a 0.0150kg ball falling from a height of 10.0m

135. ## chemistry

What is the vapor pressure (in mm Hg) of a solution of 12.5 g of glucose ( C6H12O6) in 75.0 g of methanol (CH3OH) at 27 degrees celcius? The vapor pressure of pure methanol at 27 degrees celcius is 140 mm Hg.

136. ## chemistry

I am not understanding this molarity stuff. Can someone please show me step by step on how to solve this question? What is the molarity of 0.50 L of solution containing 40.0 g of CaCO3?

137. ## French

How would you say Ash Wednesday and Easter in French? My French teacher said it today, but I just can't recall what it was now...

138. ## math

A broken clover has 2 leaves, a normal clover has 3 leaves, and a luckey clover has leaves. Ia a bunch of these clovers, there are twice as many normal clovers as broken clovers and 5 times as many normal clovers as lucky clovers. the bunch has a total of

139. ## physics

How to solve a resultant force of 50N pulls a body of mass 10kg along a smooth horizontal surface. Calculate the acceleration with which the body is moved

140. ## physics

How to solve a resultant force of 50N pulls a body of mass 10kg along a smooth horizontal surface. Calculate the acceleration with which the body is moved

141. ## Chemistry

A. only evaporation occurs, but it eventually stops. B. only condensation occurs, but it eventually stops. C. Neither evaporation nor condensation occurs D. Both evaporation and condensation occur. i think its D, am i right ?

142. ## marketing

is the process of naming broad product-markets and then segmenting these broad product-markets in order to select target markets and develop suitable marketing mixes.

143. ## math

a figure on the left is the base of a right solid whose sides are 10 centimeters tall. what is the volume of the solid in cubic centimeters?

144. ## Pre-Calculus

Completing the Square 1) 9m^2 - 20m - 21 = 0 2) 10x^2 - 4x -32 = 0

145. ## Social Studies Paper

I have to write a paper about my neighborhood (east flat rock NC) using 3 of the 5 themes of geography. The 3 that I used were: Place, Location, and Human-Environment Interaction. I need some help on some ideas I could use for human-environment

146. ## chemistry

I don't understand this zwitterion form . Here is the question. write the zwitterion form of the amino acid cysteins shown in the follwing figure. If the pI for cysteine is 5.1 at what pH will the zwitterions be the predominant form? Can you please show me

147. ## social studies

what did the dutch call their colony in north america

148. ## Economics

Could you give me two reasons why it is a good idea for the BBC to be funded through advertising. I have already got that it generates a higher amount of revenue. Also could you give me two reasons why it is not a good idea for the BBC to be funded through

149. ## english

Do all essays require a thesis

150. ## algebra

The function H described by H(x) = 2.75x + 71.48 can be used to predict the height, in centimeters, of a woman whose humerus (the bone from the elbow to the shoulder) is x cm long.

151. ## Statistics and Probability

Suppose that the proportion of students who used the Internet as their major resource for school in the past was 66%. A sample of 1000 students was taken and the number of students who used the Internet for their school during the past year was recorded.

152. ## statistics

Describe the major difference between a population of scores with a mean=50, standard deviation=6, and a sample means of n=36 selected from a mean=50, standard deviation=6.

How to change 6/8 into a decimal, and into a percent can someone help me please

A box is lifted with a pry bar, by slipping the bar under the box and lifting up on the bar. If the pry bar is 2m in length and it is grasped at the end, and the box is located at the opposite end, the fulcrum, with its center of gravity at a distance of

155. ## English

Can you please check these five sentences for me I find it difficult to correct. 1)1984 can be considered (as) an anti-utopian novel because it provides the description of a society in which a totalitarian government controls any action of the people. 2)In

156. ## chemistry

if i want to change the pH of any solution from 5 to 8 what the volume of NaOH 0.1 N needed

157. ## Math

What is x to the fourth power minus 20x plus 64 equals 0

158. ## Story about my future Part 2

Down below is the other path I have written about. Could you please check to see if it covers all these factors. - cost of living on your own -factors that add to your achievement in the workplace -educational attainment and earning potential -current

159. ## Physical science

what is the concentration hcl react with zn

160. ## math: pre calculus

How do I find the exact value of sec(2.4)?

161. ## English - Native speakers

Hello! Which expression do you use the most in English? Don't take amiss to me or something similar? I am looking for a verb but I can't seem to find it in English. Is there also an expression like to take harm on someone? I hope you get the idea which

162. ## physics

Your niece is working on a unique science fair project - a clock built around a small mass vibrating on a little spring. Her prototype version is working ok, but it's running too slow. Given your experience in this course, you suggest to her that a stiffer

163. ## critical thinking

What is one important distinction you could not overlook making when critically evaluating the information provided in these materials about the Boston Tea Party?

164. ## ALGEBRA II

In circle O, chords AB and CD are congruent. AB measures 2x + y, while CD has a length of 16.5. Two smaller chords, GH and KL, are also congruent. GH measures x + 2y, while KL has a length of 13.5. Find the values of x and y.

165. ## math

The ratio of dimes to nickels in jan's change box is 2/3. jan has 75 cents in nickles. how many nickes does jan have? 15? would that be correct? and would she have 10 dimes?

166. ## math

laura has a roll of ribbon there are 29 yards of ribbon on the roll what equation can laura use to find the number of inches of ribbon on the roll

167. ## Economics - repost - assistance is appreciated

A)Who has more monopoly power---Wal-Mart or the concessionaire who has acquired the franchise to sell beer, hot dogs, colas, candy, etc., at a Washington Redskins football game? Explain. B)Who has more monopsony power---Wal-Mart or teams in the National

168. ## physics

1.A car is traveling a road that includes two sides of an equilateral triangle with a constant speed s. What is the magnitude of the average velocity v of the car? 2.A ship crosses a river aiming at the angle theta to the left from the straight courses.

169. ## geometry

I have a isosceles trapezoid question. The top line is 13" long, the sides are 60" long, and the bottom is 27" long. I do not know what is the equation or formula is to determine the acute angle between the bottom and sides or top and sides. Can you please

170. ## Chemistry

What is the boiling point of a solution made by mixing 115 g NaCl in 1 kg of water? (Kb for water is 0.512 C/m)

171. ## English

I'm writing an easy about my hero. I need s strong into sentence with a a action work. So carving have "Taylor swift has impacted my life..''

172. ## algebra

0 cm^3 0f a normal specimen of human blood contains 1.2 g of hemoglobin. how many grams does 45 cm^3 of the same blood contain?

173. ## English

I forgot to include the following sentences. I hope you can have a look at them, too. 1) 1984 can be considered an anti-utopian novel, which shows Orwell's sympathy for all the people who were murdered and exhiliated in totalitarian dictatorships (?) in

174. ## ETH 125

I'm reviewing the current issues between the federal government and the Native Americans for a CheckPoint Assignment in week 6. My question; when reviewing the article, on the Indian Country website, how do I decipher which legislation is linked to the

175. ## English - Native speakers

Thank you Writeacher for your answers today :) Here are some other questions :) : Do you say We've had a lot of rain recently or lots of rain? Can someone explain the difference between those two phrases - in your own words. Also what exactly is the

Simplify the following algebraic expressions: Evaluate; P(-1/2) if P(x)= 2X^4 + X^3 + 12

177. ## geometry

if I had a prism with the dimensions of 9 yards x 6 yards x 3 yards what is the deminsion in cubic feet?

178. ## Chemistry

X + Y --> Q The reaction above has the rate law: rate = k[X]³. When [X] is doubled the rate increases by a factor of ?

179. ## English

Thank you for improving my punctuation. Here are some more sentences I'm doubtful about.In particular, I find it difficult to express numbers 7 and 9. 1) However, while looking at the picture, a cry of pain and indignation comes from him. 2) He can see no

180. ## Math

On three consecutive passes, a football team gains 8 yards, loses 24 yards, and gains 42 yards. What is the number that rep the total net yardage?

181. ## Math

Can someone please simplify this i am lost. X(x+1)+(x+1)(x+2) show your work

182. ## prealgebra

The length of a rectangle is 7cm greater than the width. Find the length and the width if the perimeter is 54cm

183. ## Calculus

Could someone please explain this to me? Differentiate. h(u)= 10^(sqrt(u)) h'(u)= 10^(sqrt(u))*log(10)(d/du(sqrt(u))) h'(u)= 10^(sqrt(u))*((1)/(2*sqrt(u)))*log(10)

184. ## math

one fifth of my life I wanted to become a teacher. 3/25 of my life I was a teenager. 9/25 of my life I was married to my husband. Three-fifth of my life my son was born. Fifteen years after that, my daughter was born. Seven years after that I got a divorce

185. ## Calculus

Find the derivative of (b/(a+z^2))^2 Assuming that a and b are constants...

186. ## Math

How to change 320% into a decimal and a fraction

187. ## physics

1.A car is traveling a road that includes two sides of an equilateral triangle with a constant speed s. What is the magnitude of the average velocity v of the car? 2.A ship crosses a river aiming at the angle theta to the left from the straight courses.

188. ## IV help

What is the drip rate for infusing an IV at a KVO rate using a 60 ttys/mL administration set?

189. ## Calculus

Find the domain: f(x)= x2-7x+12/x4-8x3+13x2+30x-72

190. ## Calculus

Find the derivative of f. you may simplify before differentiating f(x)= x2-7x+12/x4-8x3+13x2+30x-72

191. ## math

In an 8 inch square cake pan and a 10 inch square cake pan. what is the difference in volume each pan will hold. each pan is 1.5 inches high

192. ## chemistry

How many grams of water should you add to 31.0g of sucrose,C12H22O11, to get a 0.855 m solution?

193. ## gcse geography

please could someone help me find the definition of a sandy beach. ive looked but cant find anything.thanks:-)

194. ## Calculus

Find the derivative of f(x)=sqrt(9−sinx/1−cosx) Everthing is included in the square root...

195. ## English

I have a few more sentences on Dorian's death I'd like you to check. Thank you. 1)Dorian throws himself on the sofa and starts thinking of his past. He recognizes he has filled his mind with corruption, committed horrible crimes and has exerted an evil

196. ## Math

ok so, a square is 9.3cm at the top so what is the area? I got the perimeter and it is 37.2 cm but I just cant understand how to do area and get the right answer

197. ## english

I don't understand the book I'm reading. Its called Goodnight Mr Tom. We writing exams on this but I really need help understanding this book. Please help me.

198. ## geometry

How do you find the diagnol length on a 12 ft. by 12 ft. square

199. ## Chemistry

How do you know when to use a coordinate bond with molecular compounds?

200. ## Algebra

which number is not written n scientfc notaton? a)15.5 x 10^4 b)2.567x 10^-5 c)6.7 x 10^3 d) none of these I think D

201. ## PHYSICS

The hydraulic gradient in an 10-ft-thick aquifer at a site of uniform flow prior to pumping is -0.02. The hydraulic conductivity is 100 ft/day. True or False: After pumping starts at a well at a rate of 10,000 cubic feet per day, the distance from the well

202. ## Calculus AB

Consider the region trapped between the graphs of y=9-x^2 and y=11-3x. a) find the area of this region b) set up an integral which computes the volume of the solid of rotation obtained by rotating this region about the x-axis c) set up an integral which

203. ## Statistics and Probability

Suppose that the proportion of students who used the Internet as their major resource for school in the past was 66%. A sample of 1000 students was taken and the number of students who used the Internet for their school during the past year was recorded.

205. ## English

I'm finding it dfficult to check a few more sentences. These are the last on this theme. Thank you. 1)He studied at Eton college, where misbehaved students used to be beaten. 2) On his return to London he experienced poverty 3) At the time (not "in this

206. ## statistic

Given a normal population with ì = 40 and ó = 8, what is the probability of obtaining a sample mean between 39 and 41 for a sample of n = 16 scores?

207. ## physics

safiya places a 5.o-kilogram brick on chair in the classroom.the chair is 1.o meter off the ground.what is the gravitation potential of the brick if it falls off the chair?remember that gravity equals 9.8 meter per second squared.

208. ## English

Could you please check the correction of your first sentence? I included a few more sentences on Stevenson's novel. Could you please have a look at them? Thank you. 1 a) 1984 can be considered as anti-utopian novel. 1)The single dominant theme in Dr Jekyll

209. ## math

my son has to draw a figure with an area of 63 and a perimeter of 32.how do he go about doing it?

210. ## Math

Have to explain how to use a graph to determine the number of solutions system. Am lost on what they want.

211. ## Physics

Suppose a cube that measures 0.020 m on each side were made of water. Find its volume, mass, and weight.

212. ## general

can we ask personal advice questions on here too? or just homework?

213. ## social studies

How do you feel about medical testing on disable people, and prison inmates.

214. ## art

can anyone help with art/101 final

215. ## PHYSICS

How does the magnitude of the electrical force between two charged objects depend on the distance between the charges? I really frustrated right now, and I can't figure out the answer too this question. Help pleeease :)

Discuss the pros and cons of imposing quotas on some imported goods. How would this affect the American economy?

217. ## Math- Algebra II

SOLVE.. Please show the steps so I'll understand it 8^x-2=(1/16)

218. ## Algebra

Rewrite using distributive property -7(x-7)

219. ## science

Okay, Ms. Sue. I got this and I don't think that it is right. this is the question - I wrote the answer at the bottom. I don't think that its right. speed=4,500km/2.5h*60min/1 h=270,000/2.5=108,000km/h I think that i'm confused. Thanks

220. ## Calculus

Find the dereivative of: y =((x^2+1)/2)^6 I really don't know the process to do these one, I tryed to use the quotient rule but then I don't know how to do with the ^6 so I don't think that's the way to do it...

221. ## Child Care

1.At what age does exercise begin to result in strength in boys and girls? a)between ages 1 and 2 b)between ages 3 and 4 c)between ages 5 and 6 d)between ages 6 and 7 2.Temperatures in child care education setting should be set at __ in the summer and __

222. ## Language

Clue Word Not the problem, but the... A_ S _ _ R A boat for pleasure trips Y_ _ _ T

223. ## physics

a glider of length 10.00 cm slides down an air track. It passes through the lower photogate in .50 sec. A little later it passes through the lower photogate 100.00 cm down the track, in .25 sec. Calculate initial velocity,final velocity, and acceleration.

224. ## math

how do i solve this S(1)=10000(1-e^-.5(1)) the answer for this is 3935 buy i don't know how it came up with that answer. could anyone please explain to me how thanks in advance!

225. ## math

In the square if part A is 1/4 of the square and part C is 1/10 of the square, what percent of the square is part B?

226. ## algebra

Simplify the following algebraic expressions: Evaluate; P(-1/2) if P(x)= 2X^4 + X^3 + 12

227. ## hum/176

In this week's video, Bill Goodykoontz discusses the effects of violence on audiences and gamers. How much responsibility do filmmakers, game manufacturers, etc. bear when it comes to depicting violence? How much responsibility do parents have in allowing

228. ## science

what is a traige according to first aid

229. ## geometry

if a triangle has a perimeter of 72 and a ratio of 3:4:5. what is the length of all three sides and angles

230. ## math

Please help my equivalent fraction. I am greater than 1/5 and less than 1/2. My denominator is between 2 and 4. What fraction am I? Thanks for the help..

231. ## prealgebra

In the equation A=ur^2, if r is doubled, by what number is A multiplied and why? a. 2 b. 1\2 c. 4 d. 1\4

232. ## Algebra

19/21 divided by 4 6/7 give estimate anser & exact answer

233. ## Science

AWhen it is time to leave the part, the familhy could only drive at 60 km/h in the mountains. How long would it take them to travl the 270 km to their home? How fast would they need to travel to make the trip in 3h? I want to see how i write the formula

234. ## science

Ms. Sue, I want to check an answer ok? A kayak races 100m in 50s. What is its speed? This is my answer speed=100m/50s=2m/s. Thank you

235. ## Visual Basic

How do I display 1/2 as a signle character in a text box?

236. ## Math

a rectangle is 8 ft at the top and on the side its 4.2ft i got 24.4ft for the perimeter and 33.6ft for the area is that corect?

237. ## Science

I want to thank you for all the help, I just found this sight today. I think that you and the sight are realy COOL!!!!! thanks :-)

238. ## HELP NOW MATH

4n − 5 = 3n + 2 I know its 6 but i don't know how to solve it.!!!!!!!!@@@23q9

239. ## math

A ladder leans against a wall four feet above the ground. The base of the ladder is three feet from the wall. How long is the ladder?

Compose a 2 path story of your future. The story which you are going to write must explore 2 choices: what will take place in your future if you don’t gruduate upper secondary school and receive some post-secondary education. And the other part is that

241. ## chem

1.02 mols of helium contain how many atoms?

242. ## calc

f'(x)=(24)/((2sinx+6cosx)^2) find equation of line y=mx+b

243. ## Math

If Alex and Steven are spinning to see who gets to take 711 on a trip. Alex decides to spin himself to make sure Steven doesn't cheat. He spins himself 14 times. They decide if Alex spins a 4 or any number less than 4 he gets to go on a trip with 711. If

asked by A. Plz Answer My Queation I NEED TO GO TO SLEEP
244. ## math

what is the greater common factor of 6/12 need all divisible numbers for both and put in lowest form as a fraction

245. ## Math

How to simplify this equaiton? -5[55-(14-84)]=? I know that what is in the ( ) comes first so what do I do after -5[55-(-70)] please help me understand this.

246. ## Trigonometry

how do you solve for y=sinX+2. just the phase shift and period. even how to graph if anyone knows. i got stuck with this one

247. ## MATH

-9 is a member of which subset of real numbers

248. ## English

I still have a few doubts. I hope you can have a look at them, too. 1) Winston is a thry-nine-year-old man characterized (?) by blonde hair and a ruddy complexion, caused by the use of blunt razor blades. 2) At the beginning of the book he enters his modes

249. ## HCA 220

I am in week 4 and need guidance on where to begin my power point presentation. I have only did one other power point and it was nothing like this. I am completely at a loss. I just need an example of what to do as this seems way over my head. Help! Gem

250. ## English

Can you please check my last sentences. I really need to know which expressions are best. Thank you. 1)He studied at Eton college, where misbehaved students used to be beaten. 2) On his return to London he experienced poverty. 3) At the time (not "in this

252. ## Latin

latin root word for patron

253. ## art

Can someone give me an example of installation art?

254. ## English

I checked the spelling mistakes and I reworded some of the sentences. Can you please check them and tell me how I can improve them? Thank you. 1)Dorian throws himself on the sofa, and starts thinking of his past. He recognizes he has filled his mind with

255. ## algebra

whats x²+7x+10÷x-6 x

256. ## math

If 4/5 of a number is 16,Wat is 1/5 of the number?

257. ## math

How do the acute and obtuse angles compare to the right angle?

258. ## Math

Find the indicated out puts for f(x)=3x squared -5x if f(0)= f(-1)= f(2)=

259. ## spanish

. Hay una variedad de las bebidas y los postres deliciosos también My teacher marked that sentence down, and according to her there is suppose to be a verb between postres and deliciosos, which i am having trouble figuring out. Can any one help?

260. ## Geography

what is an Icelandic home's average room temperature?

261. ## English

Is impacted an action word?

262. ## math

How do you simplify equations; ex. 8x+3(-4x+5)2x Caxn someone explain not just post the answer.thanx(:

263. ## science

what will it cost to heat 1.5Mg of water from room temperature to 90degrees celcius using electricity at 60% efficiency?

264. ## math?

9/54 ito percent

265. ## Geography

What's the importance of the Mississippi River? Thanks in advance

266. ## Calculus A

1. Find the slope m and an equation of the tangent line to the graph of the function f a the point (2, 38) f(x)=9x -2x +6

267. ## Math

which mixed number is greatest? 1 1/2 1 1/3 1 1/4 1 2/3

268. ## math

Turn 7 21 into a percent and decimal. First simplify the fraction. Show your answer on the number line.

269. ## english

is there such thing as "exercising of oversight on" ....

270. ## math

what would 120/18 reduce to? 6 1/3

271. ## math

order from least to the greatest 3/10,4/5,18,20,1/20,7/10

272. ## alg 1

how do you work out d2+3d-10=0?