1. chemistry

Write the formula of the conjugate base for acid H3PO4 and what is the name of the base Write the formula of the conjugate base for acid H3O+ and what is the name of the base ..........and how can i tell how to get it? i am lost

2. Geometry

If [angle]D is a right angle and lines PN, FG, and BD are parallel to each other, prove [angle]SPN ~ [angle]SFG ~ [angle]SBD

3. Chemistry

CuSO4(aq) + 4NH3(aq) → [Cu(NH3)4]SO4(aq) I know that adding nitric acid will reverse the reaction. But what is the actual chemical equation? [Cu(NH3)4]SO4(aq) + HNO3(aq) --> ???

4. physics

Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped). His x-ray vision tells him Lois LaTour is inside. If Superguy is 1.00 km away from the tower, and the elevator falls from a height of

5. Algebra1

Please let me know if these are correct. 1. Find: 10% of 30 3 2. Find: 10% of 100 10 3. Find: 20% of 50 10 4. Find: 20% of 100 20 5. Find: 50% of 50 25 6. Find: 150% of 300 450 7. Find: 15% of 56 8.4 8. Find: 27% of 92 24.84 9. Find: 32.8% of 106 34.768

71. Geometry HELP

Using coordinate geometry to prove that the diagonals of a square are perpendicular to each other. Given: Vertices are at A(0,0), B(a,0), C(a,a) and D(0,a) Slope of AC=1; Slope of BD=-1 Type your proof. (someone plz help cuz i don't understand)

72. world history

According to Procopius, two sixth century Christian monks undertook an elaborate smuggling operation to provide Byzantium with the knowledge to produce

73. college physics

find the frictional force exerted on a 20kg block pulled slowly over a horizontal floor using a rope which makes a 30 degree angle over the horizontal. the pulling force is 100N??? i found the Fn to be 146 N what do i do from there?

74. English

When an animated cartoon was made of Animal Farm, it was given a happy ending. Animals everywhere hear that Napoleon has betrayed the cause of animalism. They join in a second revolution and succeed in overthrowing him. This leads to the establishment of

75. geometry

If an arc makes a central angle of 98 degrees is it a major or minor arc? Explain??

76. chem

Calculate the specific heat (\rm{J/g \; ^\circ C}) for a 18.5-\rm g sample of tin that absorbs 183 {\rm J} when temperature increases from 35.0 ^\circ \rm C to 78.6 ^\circ \rm C.

77. STATISTICS

The area under a normal curve distribution is I have an answer of equal to one. is this correct?

78. STATISTICS

Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find the mean and standard deviation of this random variable. I have a mean of 4 and a standard deviation of 2.25 is this correct

79. English

For my english ISU presentation, we are expected to present the thesis of our novel and relate our thesis to other mediums in our society today like poems, songs, movies, other novels. Anything like that. The novel i am doing is my sister's keeper by jodi

80. CHM 152

The activation energy for a reaction is 37.6 kJ/mole. The rate constant for the reaction is 5.4 x 10-3 s-1 at 45 oC, Calculate the rate constant at 145 oC.

81. Algebra

I understand that systems of equations can be solved by graphing or by using substitution or elimination. But I cannot think of any pros or cons so... What are pros and cons of each method?

82. Geometry HELP

An isosceles triangle Î”ABC has its altitude at the y-axis and its base at the x-axis. D is the midpoint of segment AC and E is the midpoint of segment CB. Given the coordinates A(-2a, 0), B(2a, 0), and C(0, 2b), determine the coordinates of midpoints D

83. INB

3. Assignment: Lunch and Learn Presentation • Consider the following scenario: You have been asked by the director of your department to put together a Lunch and Learn Presentation wherein you present to your coworkers an introduction to the concepts of

84. Plz Check my Geometry (Urgent)

***I know I've posted this several times but it's like getting skipped and or no one has gone over it so I'm posting it one more time before I go to bed. I need to have these checked by tommorrow PLEASE!*** Out of 31 questions these are ones I struggled

85. college sci/241

Think of some of your favorite foods when you were 10 years old. Are they still your favorites? Do you think you will be eating the same foods you eat today 20 years form now? What are some of the reasons dietary modifications may be needed in different

86. To all students posting math questions

Please know that at least 3 of our frequently posting math tutors are away from their homes on trips. There are other very good tutors who are online, but less frequently. You'll need to be very patient.

87. trig

the scores on a 100 pt test are normally distributed with a mean of 80 and a standard deviation of 6. a student's score places him between the 69th and 70th percentile. what is his score?

88. Science

If neons atomic number is 10 how many electrons are in the outer energy level?

89. English

I need hep writing an essay about the defects of two adults in Romeo and Juliet that caused their children's disobedience. What possible characters can I do, and what main ideas should I write for each character?

90. Chemistry

What class do the following organic compounds do each belong and what is the IUPAC name -- 1.........Br ........../ ......./\ ......|..|..(supposed to be a hexagon) .......\/ ........| Br 2. CH3CHClBr - I have 1-bromo-1-chlorothane, what is the class? 3.

117. Intermediate Algebra

Rewrite the following as an equivalent logarithmic equation.Do not solve. Show your work. m^n=r

118. STATISTICS

If my p-value = .322 and my significant level is .05 , then; I cannot make a decision until my sample size is given. is the correct answer?

119. economics

what is absolute advantage of 200 lbs corn and 50 pigs

120. Chemistry 30

According to the data booklet Cu(NO3)2 and Sn(s) are spontaneous Cu2+ being a strong reducing agent and Sn(s) being a strong oxidizing agent but according this lab:

122. Chem Check

The first law of thermodynamics is the application of the conservation of energy principle to heat and thermodynamic processes.

123. Algebra

I am havine trouble with this problem will someone please help me The perimeter of a rectangle is 68m The length is 10 m more than twice the width. Find the dimensions

124. Algebra 2

Is the answer to: cosθ, if tanθ = 1 and 180° < θ < 270° ; (√ 2)/2 ?

126. Physical Science

Please use the Bohr model simulator at Michigan State University to complete the table below: initial orbital ending orbital Wavelength (nm) 3 2 4 2 2 434 2 410.2 7 2 397 4 3 5 3 Bohr Model Simulation McGraw-Hill (Java)

127. math

A store marks up items 42.5% to allow for profit. If an item costs a store \$24.40, what will its selling price be?

128. algorithms and logic

i need an example of a peer review of the currency conversion test procedure exercises

129. Chemistry

If I put the temperature is increasing would that be the same as going from -2.1 degrees Celsius to 100 degrees Celsius. OR would it be as the temperature is getting warmer??

130. Algebra1

Please check these for me. 11. Find: 32 out of 38 in percentage 84.2% 12. Find: 41 out of 51 in percentage 80.3% 13. Find: 69 out of 70 in percentage 98.5% 14. Find: 32 out of 110 in percentage 29% 15. Find: 41 out of 40 in percentage 102.5% Thank you

131. Algebra1

45. Find your percent correct on a test if you received 61 points out of 69 possible. 88.4% 49. Find your percent on a test if you received 42 points out of 80 possible. 52.5% 50. Scientific notation is most effective when used with _____ a. very small

132. algebra

-d = 3 sqrt d - 2 a) {3} b) none c) {6} d) {3,6}

133. math

what is the measure, in radians, of a central angle formed by cutting a circular pizza into 12 equal wedge shaped pieces?

134. geography

what are the steps in finding a location?

135. chemistry

A chemical problem may be presented to you in units of moles, mass, or volume. Which one of these can be directly used in your arithmetic no matter what the conditions are?

136. science

what causes some genetic disorders like sickle cell anemia

137. Cody

With whom do the doctors identify charlie? by "whom" is referring to another person? I don't get this question. Please clarify. thanks.

138. Algebra

How long will it take for the population of a certain country to double if its annual growth rate is 1.5%? Round to the nearest year. Use the exponential growth model P(t) = P0e^kt

in her room at the prow of the house where light breaks and the windows are tossed with linden. my daughter is writing a story i pause in the stairwell , hearing from her shut door a commotion of typewriter- keys like a chain hauled over a gunwale. young

140. pre-calculus

If (1)(2) + (2)(3) + ... n(n+1) = n(n+1)(n+2)/3 complete the inductive step of its proof: 1(2) + 2(3) + ... k(k+1) + (k+1)(k+2) I have no idea what to do.

141. Social 30

define isolationism and explain if it is possible for a powerful nation to isolate itself from the world. Cite specific details from this period of history and provide reasons for your answer.

142. English-Plot Summary

Could someone please provide me with sites from which I can get ideas on how to write a plot summary. Thanks a lot:-)

143. science

What are the three categories of fungi?

144. chemistry

Potassium bromide has a solubility of 80g/100ml of H20 at 50º C. A saturated solution would be equivalent to a ____________-molar solution?

p/3-3p/8=3 p-3p/8=9 p-3p=72 -316 I am not sure if I did this right. Just guessing.

146. algebra

solve sqrt () x + 7 = 2 sqrt () x a) none b) {3/7} c) {0} d) {7/3}

147. Ancient Civilizations

Hey, did the Ancient Greeks invent/came up with different methods of sculpting that affects the techniques of sculpting today? And also with tools? Thanks

148. algebra

Solve: 8 = sqrt () y + 2 a){62} b){6} c) none d){66} And I tried to the sqrt root image i can see but you can't and thanks

149. Geometry HELP

What is the equation for a circle with a diameter having the following endpoints: N(0,1) and Q(18,1)? a.)(x - 9)^2 + (y - 1)^2 = 81 b.)(x + 2)^2 + (y - 7)^2 = 56 c.)(x)^2 + (y)^2 = 72

150. world history

what is the ka'bah?

151. mgt

Determine what you think would be the best three approaches for managing resistance to change, of the six approaches listed in the Skill Concepts and Behaviors section, to apply to the nursing teams situation. The six approaches for managing resistance to

152. Algebra 2

How do I simplify tan θ + cot θ ? Or is it already simplified?

153. Chemistry

Could someone tell me what thermal changes are in a heat curve of water or in general what it is? Thank you...

154. Algebra 2

Can (1 + cosθ)/sinθ be simplified further?