Sunday
February 1, 2015

Posts by Anonymous


Total # Posts: 76,979

Chemistry
Estimate the rate of the reaction, H2SeO3 + 6I^- + 4H^+ --> Se + 2I3^- + 3H2O given that the rate law for the reaction at 0°C is rate = (5.0 × 105 L5mol-5s-1)[H2SeO3][I-]^3[H+]^2 The reactant concentrations are: [H2SeO3] = 1.5 × 10-2 M [I-] = 2.4 × 10-...
February 1, 2015

s
I combine them above
January 31, 2015

s
I combine the sentences does it make sense?
January 31, 2015

s
The fish didn't take , ,as they periodically teased the boys,nibble at bit,they jumped ,as the jumping within arm"s reach of the boy,were on bank.I had combine does it make sense
January 31, 2015

chemistry
A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.23 moles of KOH into 720 mL of solution. What is the pH of this buffer? Ka = 6.2 × 10−6 for HA. Answer in units of pH. please i need the answerf
January 31, 2015

chemistry
The ionization constant of HA is 1 × 10−6 . What must be the ratio of [A−] to [HA] for the preparation of a buffer solution with a pH of 6.77? whats the answeer??????
January 31, 2015

chemistry
A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.23 moles of KOH into 720 mL of solution. What is the pH of this buffer? Ka = 6.2 × 10−6 for HA. Answer in units of pH. i need the answer
January 31, 2015

chemistry
i dont know how
January 31, 2015

chemistry
What is the concentration of hydrogen ions in a solution containing 0.645 M HOCN (cyanic acid) and 0.235 M (NaOCN) (sodium cyanate)? The ionization constant of cyanic acid is 3.5 × 10−4 . Answer in units of M
January 31, 2015

chemistry
whats the answer?
January 31, 2015

chemistry
What mass of solid sodium formate (of MW 68.01) must be added to 115 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 4.16? Ka = 0.00018 for HCOOH. Answer in units of g
January 31, 2015

Statistics
The height of a bluebird was measured in centimeters. If the ruler reads 10.599 centimeters, what is the lower real limit of the bluebird's height? I know the lower limits of 10 are 9.5 or 10.5 after we go further I don't understand how to get the rest of the real ...
January 31, 2015

math
5,280 divided by 9 = is what?
January 31, 2015

Pre Calculus
Can someone help me with this problem? Determine the number of positive integers less than 10,000 that can be formed from the digits 1, 2, 3, and 4 if repetitions are allowed. Thank you!
January 31, 2015

Chemistry
What is the enthalpy change when 25 g's of PCl5 are decomposed /\ H= 90
January 31, 2015

math
Express 0.78 .as a fraction a/b where a,b,=integer
January 31, 2015

algebra
The price of salt goes up by 9 cents. The old price goes up by four-fifth of new prices. Find old and new price.
January 31, 2015

algebra
The price of salt goes up by 9 cents. The old price goes up by four-fifth of new prices. Find old and new price.
January 31, 2015

algebra
The price of salt goes up by 9 cents. The old price goes up by four-fifth of new prices. Find old and new price.
January 31, 2015

math
one out of 42 high school ball players plays college ball. one out of 47 college players plays professional ball. what fraction of high school players professional ball?
January 31, 2015

Sociology of Sports
In the coverage of women's sports, it is common for the media to
January 30, 2015

Science
So it would be the ancient sea dried up and became land. I was just backwards, lol @Ms. Sue
January 30, 2015

Science
geologist finds fossils of a lizard-like dinosaur and a fern-like tree in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of bony fish and shellfish. Which explains? 1. The continent shifted to a polar region. 2. The ancient land...
January 30, 2015

Science
which conditions characterize a high-pressure area? 1. low density, low humidity 2. high density, high humidity 3. high density, low humidity** 4. low density, high humidity
January 30, 2015

government
i know how a bill becomes a law, but what are 2 actuall bill passes that i can use
January 30, 2015

government
Explain the process for how a bill becomes a law Utilize 2 actual bills as examples
January 30, 2015

consumers
you go to the whome insurance company for auto insurance the charge $525.00 as a base rate for six months of insurance for your vehicle they offer a 15% discount for safe driver habits and a 10% discount for an excellent credit rating of 5% for a good rating the increase the ...
January 30, 2015

Math
A rectangle family room is 8 yards long and 5 yards wide . At $30 per square yard , how much will it cost to put down vinyl sheet flooring in the room ?
January 30, 2015

reading
Scientists generally agree that Earth is getting warmer due to what's called the greenhouse effect. A greenhouse used for plants stays warm because sunlight and heat coming through the glass roof are mostly trapped. The heat doesn't radiate back into the atmosphere ...
January 30, 2015

psychology
PLEASE CHECK MY ANSWERS.
January 30, 2015

psychology
1. The most common of all of the psychological disorders is A. bipolar disorder. B. acute stress disorder. (C). depression. D. schizophrenia. 2. In the Freudian psychoanalytic perspective, the id is to the pleasure principle as the ego is to the _______ principle. A. primary B...
January 30, 2015

psychology
A company supervisor asks for volunteers from the first shift to help assemble a new binding machine that must be on-line within the next 24 hours. Grady lifts his chin and his shoulders, nods, and says, "I can do it." In the social cognitive perspective of Albert ...
January 30, 2015

spanish
Juan se lava el pelo con la pasta de dientes. (1 point) Question 5 options: 1) True 2) False
January 30, 2015

science
what is the central theme of the "As Cheap as Coal" portion in Section 8.1 of your text?
January 30, 2015

ela
Which is the best paraphrase of these lines from "Grandma Ling"? and there I faced my five foot height, sturdy legs and feet, (1 point) And there I saw someone the same height as me, with strong legs and feet. And there I stood as tall as I could on strong legs and ...
January 30, 2015

physics
A bowling ball with a mass of 4.5 kg travels at a velocity of 37 m/s for 2.5 s until it is stopped at the end of the lane by the ball return. What additional information is required to determine the weight of the bowling ball? A. the amount of friction from the bowling lane ...
January 30, 2015

English
You do pronounce the "b." Say it like nee koomb with an "h" sound at the end.
January 30, 2015

Chemistry
For a certain reaction, Kp = 3.54 at 325 C. Find delta G 598 K in kJ/mol.
January 30, 2015

math
Arnie skates 1 3/4 miles to the lake, then goes 1 1/3 miles around the lake, and then back home. How many miles did he skate?
January 30, 2015

Criminal Law
How do lesser included offenses not violate double jeopardy protection?
January 30, 2015

Chemistry
H= -20 kJ/mol and S= -75 kJ/mol A) is this process thermodynamicslly favored? B) does the equilibrium lie to the left, right, or close to the middle? For A I don't think it is. B?
January 30, 2015

Criminal Law
How can a person be charged with multiple crimes through the legal concept of "lesser included offenses"?
January 30, 2015

Criminal Law
Can someone be convicted for multiple crimes for one act?
January 30, 2015

Criminal Law
Which amendment to the Constitution prohibits double jeopardy?
January 30, 2015

Chemistry
It's not a paper. It is a short answer and I have no idea how to answer it.
January 29, 2015

Chemistry
A chemical company claims that they are able to produce a certain product through thermodynamically favored process. Explain how this is possible?
January 29, 2015

Mathh
Oh.. oops. I accidentally wrote 76 and I meant 77. A was the answer (:
January 29, 2015

Mathh
1. Sara got 10 out of 13 questions right on a test. What will she probably make on her test? A. 76% B.60% C.70% D.85% 2. What will Sara make if she got a 5 extra points? Idk how to answer number 2.. I think it's.. A for number 2
January 29, 2015

english
Snow was quickly piling up on the ground. Wind howled through the trees. Karen wrapped a blanket around her and sighed as she watched the snow through her bedroom window. 15. In this passage, you can best infer that A. Karen is at home during a snowstorm. B. Karen doesn't ...
January 29, 2015

math
'the accountant charged $23 for the hour of work and $23 for each for each hour after that . He earned a total of $127. How many hours did he work'
January 29, 2015

Chemistry
In the process of separating pb2+ ions from cu+2 ions as sparingly soluble iodates, what is Pb2+ concentration when Cu+2 begins to precipitate as sodium iodate is added to a solution that is initially 0.0010M Pb(NO3)2 (aq) and 0.0010M Cu(NO3)2 (aq)? I know the answer is 1.8*10...
January 29, 2015

English
What is the difference between symbol and symbolism?
January 29, 2015

Physics 201
A person desires to reach a point that is 2.87 km from her present location and in a direction that is 47.5° north of east. However, she must travel along streets that are oriented either north-south or east-west. What is the minimum distance she could travel to reach her ...
January 29, 2015

URGENT PHYSICS
Consider a case in which a 60 kg diver takes off from a diving board located at a height of 10 m above the water level and enters the water at a horizontal distance of 5 m from the end of the board. If the total time that the diver remains in the air is 2.5 seconds, determine ...
January 29, 2015

Math
The perimeters of a kitchen is 528 inches.If the width of the kitchen is 120 inches,what is the length of the kitchen?
January 29, 2015

Albebra
Ociel has designed a square mural that measures 10 feet on each side. Bill has also designed a square mural, but his measures y feet shorter on each side. Write an expression to represent the area of Bills mural.
January 29, 2015

physics
boy throws a penny into an empty well with an initial velocity of –2 m/s. He hears it hit the bottom 8 seconds later. About how far did the penny fall?
January 29, 2015

Science
Which type of climate receives the most intense solar energy? A. grasslands climate B. tropical climate** C. polar climate D. temperate climate
January 29, 2015

Science
In terms of density and humidity, which conditions characterize a high-pressure area? A. low density, low humidity B. high density, high humidity C. high density, low humidity** D. low density, high humidity
January 29, 2015

Science
Which type of weather is most likely produced by a cold front? A. light to moderate precipitation B. moderate to heavy precipitation C. no precipitation** D. heavy precipitation and thunderstorms
January 29, 2015

Science
A geologist finds a layer of rock that is made of medium-grained sands and is porous. What type of rock did the geologist find? A. sandstone** B. conglomerate C. coquina D. limestone
January 29, 2015

Science
How would a geologist identify an igneous rock as intrusive? A. An intrusive rock has coarse grains because it cooled more slowly on the surface of the earth. B. An intrusive rock has coarse grains because it cooled more slowly beneath the surface of the earth.** C. An ...
January 29, 2015

Science
How do plants produce chemical weathering? A. They secrete carbon dioxide that combines with water on the rocks and dissolves the minerals in the rocks. B. They secrete chemicals that freeze the water within the cracks of the rocks and break down the rocks. C. They secrete ...
January 29, 2015

Science
Which explains how climate data were used as evidence to develop the theory of continental drift? A. Similar glacial deposits and sediments were found on areas of the same continent that are now thousands of miles apart. B. Different glacial deposits and sediments were found ...
January 29, 2015

Science
Earthquakes occur on the earth today, so we can assume they occurred in the past. Which important geologic principle does this sentence support? A. original horizontality B. faunal succession C. superposition D. uniformitarianism**
January 29, 2015

Science
According to the theory of plate tectonics, how do two plates interact to form coastal volcanic ranges? A. A continental plate slides along an oceanic plate at a convergent boundary. B. A continental plate collides with another continental plate at a convergent boundary. C. An...
January 29, 2015

Science
A mineral breaks into flat sheets when struck with a rock hammer. Which property of a mineral is being measured? A. hardness B. cleavage** C. streak D. color
January 29, 2015

Science
Which explains the greenhouse effect? A. Greenhouse gases like water vapor and carbon dioxide trap heat in the atmosphere, thereby radiating heat energy back into space. B. Greenhouse gases like water vapor and carbon dioxide release heat in the atmosphere, thereby radiating ...
January 29, 2015

Science
Which explains how plants can chemically weather a rock? A. Plant roots get into cracks and secrete water, which freezes and breaks apart the rocks. B. Plant roots get into cracks, grow, and break apart the rocks. C. Plant roots get into cracks and secrete acids, which freeze ...
January 29, 2015

Math
3{radical symbol48/3 - 2} how would i solve this problem
January 29, 2015

Physic
What is the maximum height above ground a projectile of mass 0.67 kg, launched from ground level, can achieve if you are able to give it an initial speed of 78.5 m/s?
January 29, 2015

Physics
Here are the formulas that'll lead you to the answer. Just do the math to solve for the horizontal and vertical, then plug and chug. A) Horizontal = 13.3cos45 + 0 - 6.85cos30.3 Vertical = 13.3sin45 - 17.3 + 6.85sin30.3 (Vertical)^2 + (Horizontal)^2 = (Overall Displacement...
January 29, 2015

Need Help Physics
The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.09 m/s. He starts from the south bank of the river and wants to reach the north bank by travelling straight across the river. The boat has a speed of 6.44 m/s with respect to ...
January 29, 2015

Physics Help
During a long airport layover, a physicist father and his 8-year-old daughter try a game that involves a moving walkway. They have measured the walkway to be 41.5 m long. The father has a stopwatch and times his daughter. First, the daughter walks with a constant speed in the ...
January 29, 2015

Science
1. Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the body into the air...
January 29, 2015

physics
CRITICAL THINKING: The term ”weight” in physics has the following very specific meaning: “The weight of an object is the name given to a particular force: the gravitational force exerted by the earth on the object, giving it an acceleration of 9.8 m/s2 near the ...
January 29, 2015

physics
CRITICAL THINKING: The term ”weight” in physics has the following very specific meaning: “The weight of an object is the name given to a particular force: the gravitational force exerted by the earth on the object, giving it an acceleration of 9.8 m/s2 near the ...
January 29, 2015

physics
Two forces of equal magnitude act on the same object. Which of the following must be true? a. The object is moving. b. The object is accelerating. c. If the object is initially at rest, it cannot remain at rest. d. The two forces form a third-law pair. e. None of the above.
January 29, 2015

Social Studies
aww... dang it... okay thank you
January 29, 2015

Social Studies
1.Mark the statement if it is a reason that Rome was a good site for a city. A. Rome was located on a large river.** B. Rome was built on seven hills, which offered natural protection from invaders. C. Rome had an ideal seaport.** D. The climate of Rome was good for growing a ...
January 29, 2015

physics
Suppose a car is traveling at +25.0 m/s, and the driver sees a traffic light turn red. After 0.564 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 4.00 m/s2. What is the stopping distance of the car, as measured from the point where...
January 29, 2015

Art
What is synthetic resin preferable to natural resin? A. synthetic resin will not yellow, crack, or dissolve in liduid. B. synthetic resin will not yellow, obscure, or damage in paint. C. synthetic resin will not destroy paint pigment, crack, or yellow the painting. D. ...
January 29, 2015

Science
@Brady could you please help me out. I have read and read my sheets of notes and I am having trouble figuring some of them out :/. Thank you!
January 29, 2015

Science
@DrBob222 thank you are the rest of my answers wrong?
January 29, 2015

Science
Please could someone check these for me. 1In a series of rock layers, a geologist finds fossils of a lizard-like dinosaur and a fern-like tree in layers that are 1.0 m and 1.5 m deep. However, in a layer that is 2.0 m deep, he finds fossils of bony fish and shellfish. Which ...
January 29, 2015

physics
Consider a case in which a 60 kg diver takes off from a diving board located at a height of 10 m above the water level and enters the water at a horizontal distance of 5 m from the end of the board. If the total time that the diver remains in the air is 2.5 seconds, determine ...
January 29, 2015

Physics
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.10 N is applied. A 0.440-kg particle rests on a frictionless horizontal surface and is attached to the free end of the spring. The particle is displaced from the origin to x = 5.00 cm and ...
January 29, 2015

maths contant
determine the angle of inclination 3-2y=9x
January 29, 2015

Chem
I just need to know if I did the problem correctly. The decomposition of phosphine, a very toxic gas, forms phosphorus and hydrogen in the following reaction: 4PH3(g) → P4(g) + 6H2(g) If the instantaneous rate of the reaction with respect to PH3 is -0.41 M s-1, what is ...
January 29, 2015

LA
Can you help me with this question? What is the secret to reaching someone with words??
January 29, 2015

science
In the below the results are given for the saprate mating of tomato plant what are the most probable genotype for the parents in each instance? 1.purple, cut¡Ágreen cut- cut purple-321, potato purple-101, cut green-310, potato green-107 2.purple, cut¡Á...
January 29, 2015

LA
Thank you so much. Ms. Sue :)
January 29, 2015

LA
The third one is A?
January 29, 2015

LA
Good Morning Ms. Sue. Can you look over my answer. Thank you :) Which of the following describes the word dew? A) What happens when you don’t get enough sleep for a few nights? B) What happens to your teeth when you get too much candy? C) What happens to plants in a ...
January 29, 2015

math
VASTS will disapprove of a person asking for help, when they are not in anyway giving examples. How nice of you. The question asked amount of oxygen not amount of tanks. Thank you for answering but i had already solved the question before placing d question.
January 29, 2015

math
Wow @bobpursley 6 EVAs total (3 for each crew member, of which there are 2) 1 tank can only be used for one EVA therefore 6 tanks needed. I will leave the rest up to you because I know VASTS would disapprove of this.
January 29, 2015

Chemistry
How much of each of the following substances would you add to water to prepare 1.90 L of a 0.15 M solution? (a) H2SO4 from "concentrated" (18 M) sulfuric acid mL (b) HCl from "concentrated" (12 M) reagent mL (c) NiCl2 from the salt NiCl2·6 H2O g (d) ...
January 28, 2015

math
What is the cost of tiling a rectangular plot of land 500 m long and 200 m wide at the rate of rs 8 per hundred Sq m?
January 28, 2015

Chemistry
Not 100% sure but I would start by subtracting 14.2 from both sides(=17.8). Then multiply by the reciprocal of 1/T (both sides) then divide both sides by 17.8. 32.0=5.5*10^2(1/T)+14.2 -14.2=5.5*10^2(1/T)-14.2 (T/1)17.8=5.5*10^2(1/T)*(T/1) T 17.8/(17.8)=5.5*10^2/(17.8) T=5.5*10...
January 28, 2015

Math
Sam painted a wall in his. On Monday, he painted half of the wall. He painted 2/3 of the other half on Tuesday, and finished painting the wall o Wednesday. How much of the wall did Sam paint on Wednesday?
January 28, 2015

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