1. CHEMISTRY

Consider the following balanced equation: 2N2H4(g)+N2O4(g)→3N2(g)+4H2O(g) Complete the following table showing the appropriate number of moles of reactants and products. If the number of moles of a reactant is provided, fill in the required amount of the

2. Chem HELP!!

Which one of the following sets of quantum numbers can correctly represent a 3p orbital? a) (n = 3 l = 1, ml = 2) b)(n = 1, l = 3, ml = 3) c) (n = 3, l = 2, ml = 1) d) (n = 3, l = 1, ml = -1) e) (n = 3, l = 0, ml = 1)

3. Math

A conical water tank with vertex down has a radius of 10 feet at the top and is 22 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 14 feet deep? I have tried

4. Science--3 questions.

1. Which of the following is not considered to be a rock? coal sandstone pumice lava 2. Which of the following is not one of the three types of rock? igneous magma sedimentary metamorphic 3. The three types of rocks are classified by _____. color grain

5. Math

Find the linearization L(x) of the function g(x) = xf(x^2) at x = 2 given the following information. f(2)=1 f'(2)=8 f(4)=4 f'(f)=-3 L(x)=

6. Physics, Help!! URGENT!!!

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

7. Chemistry Help! (Rydberg Equation)

a) According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of _____ b) According to the Rydberg equation, the longest wavelength (in nm) in the series

8. chemistry

how many grams of zinc chloride could be formed from the reaction of 3.57 g of zinc with excess HCL

9. Chemistry

a) A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg? b) For potassium metal, the work function W (the minimum energy needed to eject an electron from the metal surface) is 3.68 ×

10. physics

Two tanks are engaged in a training exercise on level ground. The first tank fires a paint-filled training round with a muzzle speed of 250 m/s at 10.0◦ above the horizontal while advancing toward the second tank with a speed of 15.0 m/s relative to the

11. Chemistry

In Europe, gasoline efficiency is measured in km/L. If your car's gas mileage is 38.0mi/gal , how many liters of gasoline would you need to buy to complete a 142-km trip in Europe? Use the following conversions: 1km=0.6214mi and 1gal=3.78L.

12. arithmetic

vanessa buys a strip pf 25 postage stamps. The strip of stamps is 21 7/8 inches long. How long is a strip after one stamp is used.

13. Math

Lyle is putting his videotapes on a shelf.the shelf is 12 inches long.if each videotape is 1 1/2 inches wide,how many videotapes can he put side by side on the shelf?

14. English

What is the theme or message of the poem The Bull Moose by Alden Nowlan? i know the poem is a reference to the crucifix of Jesus but i am not sure about the theme

15. CHEM, HELP!!

1. If the energy of a photon is 1.32 × 10^-18 J, what is its wavelength in nm? 2. The energy of an electron in the hydrogen atom is determined by what?

16. Chemistry

The oxidation of iodide ion by arsenic acid, H3AsO4, is described by the balanced equation 3I−(aq)+H3AsO4(aq)+2H+(aq)→ I3−(aq)+H3AsO3(aq)+H2O(l) If −Δ[I−]/Δt = 4.8×10−4M/s , what is the value of Δ[I3−]/Δt during the same time interval?

Devon's target heart rate zone is 140bpm—177bpm. Julian's target heart rate zone is 148bpm—181bpm. They stop running and take their pulse, and both count the heart rate at 173bpm. If they decrease their heart rates by 20bpm, who will be in his THR

18. Algebra

4 years ago my father's age was 4 times that of my age. At present the sum of my father's age and that of mine is 53 years . What is father's present age.

19. physics

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 33m/s at an angle 28∘ above

20. Math

A spherical balloon is to be deflated so that its radius decreases at a constant rate of 12 cm/min. At what rate must air be removed when the radius is 5 cm? Must be accurate to the 5th decimal place. It seems like an easy question but no matter how many

21. Physics

A basketball is thrown horizontally with an initial speed of 4.70m/s . A straight line drawn from the release point to the landing point makes an angle of 30.0 ∘ with the horizontal. What was the release height?

22. math

a painter earns $15 per hour. what is the minimum number of hours he must work to earn at least$200? write an inequality to represent this situation and solve.

23. Chemistry

In chemistry, we did a lab in which we had a certain mass of copper, performed multiple experiments on the copper, and at the end, extracted the copper from a solution and weighed it. The goal was that the mass of the final copper should be the same as the

24. Chemistry

A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?

25. chemistry

When 34.1 g of lead reacts with 6.81 L of oxygen gas, measured at 1.00 atm and 25.0°C, 36.1 kJ of heat is released at constant pressure. What is DH° for this reaction?

26. Physics

At t=0 a grinding wheel has an angular velocity of 24.0rad/s . It has a constant angular acceleration of 35.0rad/s2 until a circuit breaker trips at time t = 1.90s . From then on, it turns through an angle 436rad as it coasts to a stop at constant angular

27. English check

Which principal part of the verb to teach appears in this sentence. Then she taught me how to cultivate rich and healthy soil and helped me identify which types of plants are best for the environment in my yard. past past participle present present

An Electrician Charges $120 After 2 Hours Of Work And$190 After 4 Hours Of Work. Write A Linear Model That Represents The Total Cost.

29. Chemistry

The oxidation of iodide ion by arsenic acid, H3AsO4, is described by the balanced equation 3I−(aq)+H3AsO4(aq)+2H+(aq)→ I3−(aq)+H3AsO3(aq)+H2O(l) If −Δ[I−]/Δt = 4.8×10−4M/s , what is the value of Δ[I3−]/Δt during the same time interval?

30. science

During the process of photosynthesis, plants capture the kinetic energy of moving photons and transform it into potential energy in the form of Select one: a. pyruvate. b. chemical bonds. c. stroma. d. thylakoid disks.

31. Micro-Economics

Suppose that the government imposes a tax on heating oil. 1. Would the deadweight loss from this tax likely be greater in the first year after it is imposed or in the fifth year? 2. Would the revenue collected from this tax likely be greater in the first

32. physics

An automobile traveling along a straight road increases its speed from 89 ft/s to 104 ft/s in 180 ft. If the acceleration is constant, how much time elapses while the auto moves the 180 ft? Answer in units of s

33. Math

A conical water tank with vertex down has a radius of 10 feet at the top and is 22 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 14 feet deep? I have tried

34. Math

Julie is conducting an experiment where she placed 29.5 mL of water in a calorimeter at 15.0 °C. Then, 2.4 g of A (molar mass = 48.0 g/mol), also at 15.0°C, is added to the water in the calorimeter and the temperature of the solution increases to 28.0

35. Chemistry

What volume of 0.1000 M oxalic acid (a diprotic acid) would be required to completely neutralize 100.00 mL of 0.1000 M NaOH?

36. physics

When a water gun is fired while being held horizontally at a height of 1.00 m above ground level, the water travels a horizontal distance of 4.80 m. A child, who is holding the same gun in a horizontal position, is also sliding down a 45° incline at a

37. Math

Considering the word Mathematics, what is the ratio of vowels to consonants? Write the ratio 3 ways. word form: colon form: fraction form:

38. Chemistry

What volume of 0.1000 M oxalic acid (a diprotic acid) would be required to completely neutralize 100.00 mL of 0.1000 M NaOH?

39. Math

In a parking lot 16% of the cars are blue. There are 4 blue cars in the lot. How many cars are not blue? 4x100=400\16= 25 then minus 4 blue cars to get the answer that 21 of the cars are not blue. I know the answer is 21 I'm just not sure if the work is

40. Physic

A baseball of mass m and initial speed v strikes a catcher's mitt. If the mitt moves a distance Δx as it brings the ball to rest, what is the average force it exerts on the ball? Express your answer in terms of the given quantities. Could someone help me

41. probability;math

A card is chosen at random from a deck of 52 cards It is then replaced and then a second card is chosen.What is the probability of choosing a jack and then an eight?

42. Physics

A block of mass m = 4.30 kg slides along a horizontal table with speed v0 = 8.50 m/s. At x = 0 it hits a spring with spring constant k = 31.00 N/m and it also begins to experience a friction force. The coefficient of friction is given by μ = 0.150. How

43. chemistry

Discuss how you would separate Fe+3 from Ca2+

132. English

Okay, in school we just finished "To Kill A Mockingbird" and we have a sort of questionnaire thing to do. One of the questions is "Who symbolizes the "gray ghost" and why?" I have my suspicions that it is Arthur "Boo" Radley but I would really like to make

133. chemistry

A pure gold ring with a volume of 1.88cm3 is initially at 18.4∘C. When it is put on, it warms to 34.3∘C.

134. Math

How would you solve this function algebraically. f(x)=-5v-4x+4+2?

135. algebra

A car hits an object the object goes 25 ft in the air and lands 300 ft away, how fast was the car traveling when hit the object?

136. Calculus

So here is the question: Find and equation of the tangent line to the graph: 4)f(x)=e^(2x) passing through the point (0,0) I find derivative being f'(x) =2e^(2x) Then m = f'(0) = 2 put into point slope formula: (y-y1)=m(x-x1) y-0 = 2(x-0) which comes out

137. chemistry

What is the percent mass of calcium in a calcium supplement if 1.06 g of calcium carbonate is extracted from a 2.82 g pill

138. physics

A cart released from rest at the top of a track 90. cm long takes 4.00 seconds to reach the bottom. determine the velocity as the cart reaches the bottom of the track

139. Math

If the side of a square is doubled in size to 8", by what percent did it's area increase?

140. English.

What is another strong way of saying : Yes, I would recommend this book to a friend.

141. Delete

Is it possible to have this question removed? Thanks so much! :) Subject: Pre-Calc Date: Saturday October 4, 2014 Time: 10:27am

142. Epidemiology

Consider each of the following scenarios and explain whether the variable in question is a confounder: 1. A study of the relationship between exercise and heart attacks that is conducted among women who do not smoke. Explain whether gender is a confounder.

143. Social Studies

What was one thing that the Salzburgers established that the other settlers did not? A. Hospital B. School System C. trading post D. tavern I think C??

Can someone please explain to me what I need to look for with possessive nouns I have a tough time with all that stuff

145. Physics

A stunt-motorcyclist wants to jump over a row of cars that is 94 meters long. In order to clear the cars, how fast must he be going when he hits a ramp that is inclined 30 degrees? Work so far: Delta x= 94m Ax= 0 m/s2 Ay=-9.8 m/s2 Trying to find: V initial

Calculate the allowed wavelengths for the emission of a photon initially in the n=3 state in a hydrogen atom

147. math

Leah picked 2.6 pounds of blackberries. Ashlyn picked 1.8 times as many pounds of blackberries. How many pounds of blackberries did Ashlyn pick?

148. Math

For each of the following questions, choose the correct answer. Which statement best describes inductive reasoning? A- It uses previously proven or accepted properties to reach a conclusion. B- It uses observation of patterns and past events to reach a

149. Statistics

1. If we wish to have a 95% confidence interval, what would be the value of the confidence coefficient? & Consider a sample mean (xbar) of 46 calculated from a sample of size 51 drawn from a population of over 1000.

150. Physics

Why is it important to use the maximum force reading from a data collection?

151. Biology

Which heart beat measurement is most indicative of your general health? i think it is your resting heart beat, but im not sure the reason

152. english

If an author is skillful at representing the point of view and attitudes of a hobo, a nurse, a corporate CEO, and a variety of other diverse characters, the author is demonstrating

153. CHEMISTRY

How does hydrogen bonding in water affects Density?

154. Physics

Two sources of equal amplitude undergo interference the energy at maxima is four times that due to either source is this a violation of the principle of conservation of energy. Explain. Can someone help me summarize a good model answer and further

155. healthcare statistics

Transcriptionsist B is a full time employee earning10 per hour and annual sallary of 20,800 transcribes 900 lines per day for a total of 234,00 lines per year what is the unit medical transcription labor cost for transciptionist B

Chromatography is a powerful analytical technique for separating complex mixtures into their components. Do you think it would be practical to use it on a large scale for preparative purposes? Consider the problems this would involve. You have a product

You are carrying out a chemical process according to the equation below. If product C, which is the desired product can decompose to product F, how might you ensure that you stopped the reaction at the optimum point to ensure the maximum yield of C.

158. Math Check

Hi! Can someone check this and see if they are correct? Thanks! 1.) Which value of x should the expression be further simplified? √(21)x a.) 5 B.) 6 c.) 11 D. 55 My answer: a 2.) 2√43x is show: Which value of x makes the expression equivalent to

159. Basic Chemical Engineering

Can someone plz give me the link of the process flow diagram of a textile(dyehouse)? I only need to know the procedures of the main components in the dyeing section. Plz help!

160. math

there are 32 boys and 24 girls. what re the various number of teams that can be made that would have the same number of boys and girls on each team?

161. education

what is the syllable pattern for legal

162. PHI208

According to Aristotle, happiness is: 1)a contented state of mind. 2)as much pleasure and as little pain as possible. 3)feeling good about oneself. 4)a life that is lived well

163. science

The muscles of a very active organism would contain more mitochondria than the muscles of a less active organism. Select one: True False

164. Math

Water is leaking out of an inverted conical tank at a rate of 0.0109 {\rm m}^3{\rm /min}. At the same time water is being pumped into the tank at a constant rate. The tank has height 9 meters and the diameter at the top is 4.5 meters. If the water level is

165. math

the sum of three times a number and 5 is equal to the sum of the number and 11.

166. Biology

Which heart beat measurement is most indicative of your general health? i think it is your resting heart beat, but im not sure the reason

167. Math

Solving long division polynomials 5x-6/10x^2-7x-6

168. American Government

I need help with the following question I am not sure if the answer is B or C. General Revenue Sharing offers states and localities even greater flexibility than block grants because they? A.are given a blank check. B.are completely unaccountable to the

169. Chemistry

c) How many grams of each matter is in 2,0 litres of the following water solutions i) 8,6 til-% ethanol solution ii) 22,6 til-% glycol solution (1,2-ethanediol)

170. Social Studies

Which of the following is NOT something that would describe Georgia's first legislature? A. Some members were elected, while other were appointed by the king. B. Men and Women served as members. C. It had an upper and lower house. D. Land ownership was

171. english

has anyone read of beetles and angels

172. Math

Water is leaking out of an inverted conical tank at a rate of 0.0109 {\rm m}^3{\rm /min}. At the same time water is being pumped into the tank at a constant rate. The tank has height 9 meters and the diameter at the top is 4.5 meters. If the water level is

173. Math

What is the linear approximation of the square root of 8.9? Must be accurate to the fifth decimal place. I have tried entering 2.98328 and 2.98328 but that does not appear to be correct. Please help!!

174. math

If I borrowed $15000 in April 2008 at 6% interest and have paid$150 per month since then, how much have I paid and how much do I owe?

175. physics

a projectile is dropped from the top of a building - it falls 1900 ft prior to reaching the ground. determine the magnitude of the acceleration in ft/second squared to the nearest tenth. Question 1 options:

176. Science

Can you get results from observations? Can you still get results from doing only small amounts of experiments?

177. Math

Farmer Jane has only pigs and chickens on her farm. She can't remember how many of each she has but she does know she counted 110 legs and 35 heads. Assuming that each animal is normal, how may of each animal does she have?

178. journalism

What is the role of the nation-states in controlling the flow of entertainment media?

179. SS

New France is _____ of the Appalachian Mountains.

180. phi 208

To check my reading week 4 quiz

181. ENGLISH

HAS ANYONE READ OF BEETLES AND ANGELS ITS IMPORTANT

182. MATH

There is a 3-meter tall vertical ladder from the ground to a ramp. The bottom of the ladder is 10 m from the base of the ramp. The distance along the ramp from the top of the ladder to the loading platform is 24 m. How high above the ground is the loading

183. Physics

A force of 10 N pushing down on a 2m^2 block will produce a pressure of?

In most cases with GLC the area under the peak as a % of the total area for all peaks is interpreted as representing the % mass of the compound measured in the mixture. Explain why this is only an approximation.

185. Algebra

the points (1,4), (3,8) and (8,3) lie on the graph whose equation is of the form: y=a|x-b|+c where a,b and c are real numbers. find a,b and c.

186. Math

write an example of a part to whole ratio.

187. math

2t + 8 greater than or equal to -4(t + 1)

188. Math

4X^2+4y^2-8X-20y+13=0

190. math

(-6x)2square for x=4