Wednesday
August 31, 2016

Posts by DiANA

Total # Posts: 886

chemistry
A flask contains 0.260 mol of liquid bromine, Br2. Determine the number of bromine molecules present in the flask. Express your answer numerically in molecules.
August 16, 2016

math
a man places $700 in an account that accrues interest continuously. Assuming no additional deposit and no withdrawals, how much will be in the account after 10 years if the interest is a constant 7.5% for the first six years and a constant 8.25% for the last 4 years? my ...
August 3, 2016

Calculus
Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Between y = x^2 − 4x + 1 and y = −x^2 + 4x − 5 for x in [0, 3]
August 1, 2016

Science
When we evaporate a salt solution salt crystals are left in the beaker or utensil but does the same thing happen in case of sugar solution?
June 11, 2016

English
can someone write a summary of the novel pride and prejudice in 400 words? please
June 11, 2016

Grammar
Depends on the tense in which the sentence has to be used.
June 11, 2016

Chemistry
No. Can you please explain?
April 27, 2016

Chemistry
Which of the following will be more soluble in an acidic solution than in pure water? Ag2SO4 CuI RbClO4 AlPO4 Cd(OH)2 Is the answer the first and second?
April 27, 2016

physics
a projectile is launched outward at an angle theta above an incline plane elevated an angle alpha above the horizon. when the projectile hits the plane it is moving horizontally. prove for this case that the angle theta must satisfy the following relations.
March 22, 2016

trig
verify (csc^4-1)/cot^2x=2+cot^2x So this is what I have so far on the left side (csc^2x+1)(cscx+1)(cscx-1)/cot^2x =(csc^2x+1)(cot^2x)/cot^2x i think I'm doing something wrong. Please help!
March 6, 2016

Physics
Block A is 4.5 kg and Block B is 2.25 kg. a. determine the mass of block C that must be placed on block A to keep it from sliding if the coefficient of static friction between block A and the table is 0.2 b. If the coefficient of kinematic friction between the surface and ...
February 29, 2016

Chem
Interpretation of the data plots consistently show that the freezing points of three solutions are too high. As a result of this "misreading of the data," will the reported molar mass of the solute be too high, too low, or unaffected? Explain please.
February 22, 2016

Maths
if a clock loses 2.5 minutes in every hour. how many minutes will it lose from 8 to 12
February 22, 2016

social studies
Who were the Mayans?
February 18, 2016

History
How “new” was the New South in terms of its labor conditions and its race relations?
February 15, 2016

math
How do you solve for (7.5-2cosθ)^2=√{25-4sinθ}^2
February 12, 2016

Physics
A car goes from 12 m/s to 25 m/s in 6.0 seconds. a.) What is the acceleration of the car? b) How far did it travel in the 6.0 seconds?
February 3, 2016

Math
The cafeteria is serving pie for dessert. Each serving will be 1/8 of a pie. how many servings will they be able to make if they have 7 pies?
February 2, 2016

Social Studies
Hi faith! I am writing the same essay and this is what I put about Andrew : Andrew Jackson was most certainly not a jerk. The indian removal and his support for slavery were black marks on his presidency, but he did much more for this country than that. One of his main ...
January 25, 2016

Psycology
code of ethics for counselors, psychologists, social workers, and human services professionals. How are these codes similar and different?
January 18, 2016

Help
What happens to the density of the air in the balloon as it is heated? Also, based on this question.... What would be the Independent variable, Depended Variable, controlled Variable.
January 14, 2016

Science help please.....
What happens to the density of the air in the balloon as it is heated? Also, based on this question.... What would be the Independent variable, Depended Variable, controlled Variab
January 14, 2016

Science
What happens to the density of the air in the balloon as it is heated? Also, based on this question.... What would be the Independent variable, Depended Variable, controlled Variable...
January 13, 2016

Science help....
What happens to the density of the air in the balloon as it is heated?
January 13, 2016

Geometry
Find r if T.A=12Pi and L.A =8Pi
January 6, 2016

Educational Technology and Online Learning
Hello There, Aaliyah, I understand you need help with this Connections Academy lesson for ED Teach it's hard I know as for I am a student myself. That's why I'll give you the right answers for you. :) But I can't always do this for you need to learn what's ...
December 15, 2015

Science
Here I'll give you the answers B A B A D D B B B B A cells tissue motor neurons energy water microscope then for the first essay question: Computers don't have cells, humans do. Also, we make and manipulate computers, they don't move on their own. They don't ...
December 7, 2015

Grammar
Write these telling sentences correctly. Ex look at the hat I see a cat The cat is on the hat The cat will sit and sit There is a picture of a cat on the hat
November 17, 2015

math
a person on a moving sidewalk travels 21 feet in 7 seconds the moving sidewalk has the length of 108 feet how long will it take to move from one end of the sidewalk to the other
November 17, 2015

Math
factor the following polynomial and state the multiplicity of each zero: f(x)= x^5 + 7x^3
November 16, 2015

physics
Hello I'm having trouble with this physics question: You are examining the loss in intensity as light passes through a fibre optic cable. The input intensity is measured as 55.1 W/m2 and the output intensity as 28.7 W/m2. Calculate the attenuation of the signal in decibels...
November 15, 2015

Science
Hi :3 the answers are B A C I sure hope this helps! :D <3
November 11, 2015

physics
A spring and mass system are oscillating with an amplitude of 5.4 cm. The spring constant is 166 N/m and the mass is 540 g. Find the mechanical energy of the system
November 8, 2015

English Language & Composition
Here is my Introduction with my thesis. Introduction: In the workplace, a new security installment begins in the workplace. Workers begin to feel anxious and watched by the placement of cameras above their heads. New abundance of supervision technologies compose a threat to ...
November 1, 2015

English Language & Composition
I need help on what my body paragraphs could talk about. My intro talks about how surveillance technologies can possibly threat civil liberties. I picked quotes from the sources I had to use that could help me in this essay. What are 3 ideas I can say in each body paragraph ...
November 1, 2015

English & Composition!
This is my conclusion to my surveillance essay. Can someone help me revise this or suggest any changes. I tried to make the conclusion as mature as possible to be a college/ university type of conclusion. Any further suggestions would be much appreciated. *I used "society...
October 31, 2015

English & Composition
If you were the teacher, which sentence shoudl be better off in the essay?... Ex 1) (Your example, Thankyou for that) : The attack by a surveillance community on civilization and fundamental privacy righte evokes fear in people. OR Ex 2) A surveillance community attacks ...
October 30, 2015

English & Composition
Thankyou so much!
October 30, 2015

English & Composition
# 3& #4 Are also (DONE)
October 30, 2015

English & Composition
Formal Writing Essay Prompt: Take a position that defends or challenges the claim that the recent profusion of surveillance technologies/ techniques constitutes a threat to civil liberty. (Here is my Introduction) I have to eliminate any linking verbs if possible. CAN SOMEONE ...
October 30, 2015

Science
Neither. The answer is B.
October 29, 2015

CHEM
What concentration of Cl– results when 993 mL of 0.521 M LiCl is mixed with 883 mL of 0.309 M MgCl2? PLEASE HELP! I don't know how to set this up
October 22, 2015

Chemistry
Three colorless solutions in test tubes, with no labels, are in a test tube rack on the lab bench. Lying beside the test tubes are three labels: potassium iodide, KI, silver nitrate, AgNO3, and sodium sulfide, Na2S. You are to place the labels on the test tubes using only the ...
October 10, 2015

Math
Simplify expression, write final answer without negative exponents. (x-3/x-4)- (x+2/x+1) all over (x+3) is the answer: (-8x+5) / x+3 ? please help!
October 8, 2015

math
How much more money do 10 T shirts cost than 6 T shirts?
October 7, 2015

chem
The crucible is handled with oily fingers after its mass measurement but before the 3 gram sample of the hydrated salt is measured. Subsequently, in part B.1, the oil from the fingers is burned off. Will the percent water in the hydrated salt be reported as being too high, too...
October 7, 2015

CHEMISTRY
is this right? 5. After heating the crucible is set on the lab bench where it is contaminated with the cleaning oil used to clean the lab bench but before its mass is measured. The analysis continues where the mass of the anhydrous salt is determined. While heating, the ...
October 6, 2015

CHEMISTRY
I also need help in this please: Suppose the original sample is unknowingly contaminated with a second anhydrous salt. Will the reported percent water in the hydrated salt be too high, too low, or unaffected by its presence? Explain. is it low? if so, can you explain in some ...
October 6, 2015

Chem
If the oil from the fingerprints is burned off completely, then the reported percent water in the hydrated salt is unaffected. However, if the oil from the fingerprints are not completely burned off, the reported percent water would be too high, since the remaining oil will ...
October 6, 2015

Chem
The crucible is handled with oily fingers after its mass measurement but before the 3 gram sample of the hydrated salt is measured. Subsequently, in part B.1, the oil from the fingers is burned off. Will the percent water in the hydrated salt be reported as being too high, too...
October 6, 2015

CHEM-CHECK ANSWER
A 18.46 g sample of a compound contains 5.89 g potassium (K), 5.34 g chlorine (Cl), and oxygen (O). Calculate the empirical formula. is the answer KClO3?
September 30, 2015

Chem
the answer is: KClO3?
September 30, 2015

Chem
A 18.46 g sample of a compound contains 5.89 g potassium (K), 5.34 g chlorine (Cl), and oxygen (O). Calculate the empirical formula.
September 30, 2015

pre-calc
how do you factor 3x^-1/2 + 4x^1/2 + x^3/2?
September 27, 2015

MATH
how do you factor: a^3-b^6 ??? please help!
September 27, 2015

CHEMISTRY
the rest: a. 5.65 g of sodium and 1.42 g of chlorine b. 5.65 g of sodium and 3.39 g of chlorine. c. 5.65 g of sodium and 8.70 g of chlorine d. 5.65 g of sodium and 12.4 g of chlorine
September 24, 2015

CHEMISTRY
sorry! this is the full question: Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 1.78 g of sodium and 2.74 g of chlorine. Which of the following could be the results of the decomposition of the other sample, being consistent...
September 24, 2015

CHEM
Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 1.78 g of sodium and 2.74 g of chlorine. Which of the following could be the results of the decomposition of the other sample, being consistent with the law of constant ...
September 24, 2015

CHEM
PLEASE HELP! Two samples of sodium chloride were decomposed into their constituent elements. One sample produced 1.78 g of sodium and 2.74 g of chlorine. Which of the following could be the results of the decomposition of the other sample, being consistent with the law of ...
September 24, 2015

CHEMISTRY
what is the proper name for C6H14?
September 24, 2015

Chem
What are the systematic names of these ? 1. CuI (s) 2. CoF2 (s)
September 21, 2015

chem
which of the following are mixtures? 1. air (mostly n2 and o2) 2. salt (NaCl) 3. Salt Water 4. Water (h20) is the answer 4 and 2 ?
September 3, 2015

Math
The question says express each repeating decimal as a fraction: 5.23232323 This is my work but my answer doesn't seem right: 100x= 523.23232323 - 10x= 52.23232323 90x= 470.909090 / 90x. \90x x= 5.23232323 What am I doing wrong? And how am I suppose to know when to multiply...
September 3, 2015

Precalc Math
The question says express each repeating decimal as a fraction: 5.23232323 This is my work but my answer doesn't seem right: 100x= 523.23232323 - 10x= 52.23232323 90x= 470.909090 / 90x. \90x x= 5.23232323 What am I doing wrong? And how am I suppose to know when to ...
September 3, 2015

Chemistry
Explain why the appearance of the wood flame is yellow whereas the gas flame most often appears blue.
September 1, 2015

Chemistry
The luminous flame temp is less than the non luminousnonluminous? correct?
September 1, 2015

Chemistry
Is the temperature of a luminous flame greater than that of a non luminous flame? Please explain.
September 1, 2015

Physics.
A glacier advances at 3.9x 10 -6 cm/s. How far will it move in 50000s? How far will it move in 3.3y? Answer in units of cm.
August 21, 2015

Math
Two line segments intersect to form an angle that has a measure of 50.7degrees. What is the measure, in degrees, of an angle that is supplementary to this angle?
August 20, 2015

math
Solve using suitable property [name the property] 1]428 x[-23]+[-428]x(-223) 2] 105 x(-37)
August 5, 2015

mathematics :integration
A particle moves in a straight line through a fixed point O with velocity (4-t)m/s find an expression for its displacement S from this point given that S=5 when t=0
July 6, 2015

mathematics : intergration
A particle moves in a straight line through a fixed point O with a velocity (4-t)m/s find an expression for its displacement S from this point given that S=S when t=0
July 6, 2015

Science
What is the difference between convex and concave lenses??
July 3, 2015

mathematics :geometric progression
The first three terms of a geometric progression are K-3,2K-4,4K-3 in that order find the value of K and the sum of the first 8 terms of the progression
June 30, 2015

mathematics
It's a question in mathematics under geometric progression
June 28, 2015

Hill school
The first three terms of a geometric progression are K-3,2K-4,4K-3 in that order find the value of K and the sum of the first 8 terms of the progression.
June 28, 2015

Science
What is the density of a substance with a mass of 0.0450 kg and a volume of 26.4 ml
June 10, 2015

Science Help Plzz
1. The images above show particles in a medium. Which of the following shows the worst conditions for a sound wave travel? A B C D is the answer A? Which of the following correctly describes a radio wave? A long wavelength and high frequency B long wavelength and low frequency...
June 2, 2015

Math
Hon, this is cheating. If you are having trouble talk to your teacher she/he would be happy to help I'm sure :) I know how hard it is though I'm an 8th grader too. Math can be so stressful!
May 28, 2015

science
The mass of a beaker containing a sample of sodium dichromate was determined to be 68.9 g. After transferring a sample it weighed 56.424 g.Determine the mass (g) of sodium dichromate transferred to the correct number of decimal places
May 3, 2015

Language Arts
Yep it's C! You are going to LOVE the giver! I've read it so many times it is such a great book!
May 1, 2015

Physics
Two plane mirrors are positioned at right angles to one another. A ray of light strikes one mirror at an angle of 30° to the normal. It then reflects toward the second mirror. What is the angle of reflection (from the normal) of the light ray OFF the second mirror? I would...
April 17, 2015

Physics
A person whose eyes are 1.50 m above the floor stands in front of a plane mirror. The top of his head is .10 m above his eyes. How far above the floor should the bottom edge of the shortest possible mirror be placed? I know that I need to take half of a number. I just don'...
April 17, 2015

Math
Heyyyyy:) I put this so I hope it helps for you or anyone else who happens to come across this answer. <3 She'd be incorrect. 2,3,5,8,and 12 is not arithmetic because there is no formula. It cannot be geometric either and we know that because most geometric sequences ...
April 17, 2015

english
To compose strong, compelling sentences, avoid using A. clauses as modifiers. B. forms of the verb to be. C. dependent clauses. D. short, simple sentences. my answer is b.
April 11, 2015

english
Which of the following techniques would be best used to present constructive feedback on a draft of an essay to a peer? A. Rewrite sections for your peer B. Only write notes on the things you like about it C. Point out the negative aspects so your peer can improve D. ...
April 11, 2015

English
Which of the following sentences uses a coordinating conjunction in a compound sentence? A. The budget payment is much higher than we anticipated, but the price of heating oil has skyrocketed this year. B. Out in the yard, the children shouted loudly and threw silly insults at...
April 11, 2015

English
Reading your draft aloud, using peer review, and using a typed and printed copy are all examples of A. points of view. B. useful techniques for revision. C. patterns of development. D. graphic organizers. my answer is b.
April 11, 2015

english
What is the sequence of components in the following sentence? Listless and depressed by vistas of snow and gray skies, Dieter left the cabin and walked toward the frozen pond. A. Subject, modifier, verb B. Subject, verb, modifier C. Modifier, subject, verb D. Modifier, subject...
April 11, 2015

English
Which of the following techniques would be best used to present constructive feedback on a draft of an essay to a peer? A. Rewrite sections for your peer B. Only write notes on the things you like about it C. Point out the negative aspects so your peer can improve D. ...
April 11, 2015

English
Which of the following sentences uses concrete language? A. Danny's Labrador retriever eagerly chases tennis balls. B. When I saw Susan, she was reading a book. C. Jerry saw that the glass was really dirty. D. I met Cathy at a store on a street near the bridge. my answer ...
April 9, 2015

English
Which of the following is an evaluation tool using questions and answers that lead to effective strategies? A. Thesis B. Outline C. Flowchart D. Graphic organizer my answer is c.
April 9, 2015

English
Thanks Ms Sue and Writeacher
April 9, 2015

English
Nathan argues that each paragraph in a narrative should support the author's thesis. Nan says that paragraphs in a narrative should illuminate some part of the action. Which one is correct? A. Neither Nathan nor Nan is correct. B. Both Nathan and Nan are correct. C. Only ...
April 9, 2015

English
Which of the following correctly uses a transitional word or phrase? A. First impressions are so important in both personal and professional life. Addison shaved off his beard. B. Kara has been happily trying lots of new activities lately. For example, she took up needlepoint ...
April 9, 2015

English
yes c. I know is wrong
April 9, 2015

English
I am thinking between a. and d.
April 9, 2015

English
or a.
April 9, 2015

English
Which of the following sentences shows an example of parallel verbs? A. Once the game was over, Jim had to be running home and eat dinner. B. Once the game was over, Jim had to run home and dinner was ready. C. Once the game was over, Jim had to run home and then eat his ...
April 9, 2015

English
Both Ada and Phil are evaluating their thesis statements, topic sentences, and evidence. If Ada finds that her essay doesn't have a thesis statement identifying the topic of the essay, Ada will reread the essay and decide what the main point of the essay. If Phil finds ...
April 9, 2015

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