# Posts by Anne

Total # Posts: 768

**Chemistry**

Thanks so much!

**Chemistry**

Sorry for pestering you on this but I really appreciate your help. The way I first did the equation, I had too many products. My question is when I do these should the products only be in the form of either a)CO and H2O or B)C and H2O? So if I set up the products to have ...

**Chemistry**

Thanks. Is there any way to tackle these incomplete combustion equations, any form to follow? I'd really appreciate it since I'm clearly on the wrong track.

**Chemistry**

I have a question about incomplete combustions. I think that you can have carbon monoxide, carbon dioxide, water and carbon or some combination of these in the products of incomplete combustions. Is this right? For Pentane, would it be correct to show one possible equation as ...

**Math**

The average of 2 numbers is 34. The first number is three times the second number. what are the two numbers?

**Science**

I need examples of each of the seven crystalline systems.

**basic chem**

so does that mean that S can have a net ionic charge of +4 as well as -2?

**basic chem**

Oxygen has a charge of -2 Sulfur has a charge of -2 My product in a equation is S02 but how is this possible is they both have the same charge? because now the S has a charge of -2 and the O of -4

**History**

its in south asia

**Precal**

Xmin=-10 Zmax=10 Xscl=1 Ymin=-10 Ymax=10 Yscl=1

**Algebra**

sorry i messed up ou have to multiply the seven too

**Algebra**

multiply each side by 6, which wuill cancel out the 6 on the left side of the equation, and on the left you will multiply 2/3 and 6, giving you 4. now you have m-7=4 add 7 to both sides, giving you m=11

**math analysis**

Go to Y= and type in your f(x)= and go to second, graoh and look for the zero in the y1 column

**Algebra**

52,955

**AP chemistry**

Sodium azide, the explosive chemical used in atuomobile airbags, is made by the following reactions: NaNO3 + 3NaNH2 => NaN3 + 3NaOH+ NH3 If you combine 15,0 g of NaNO3 (85 g/mol) with 15.0 g of NaNH3, what mass of NaN3 is produced?

**Math**

I don't understand what you mean by the commas v=(0,-590)?

**Math**

An airplane is heading due south at a speed of 590km/h. If a wind begins blowing from the southwest at a speed of 65.0km/h (average). Calculate magnitude of the plane's velocity, relative to the ground. Calculate direction of the plane's velocity, relative to the ...

**Math**

A boat, whose speed in still water is 2.80m/s , must cross a 280m wide river and arrive at a point 120m upstream from where it starts. To do so, the pilot must head the boat at a 45.0 degrees upstream angle. What is the speed of the river's current?

**palmerston**

the trees bent in the wind.(and) their leaves fluttered. need to join these sentences together by using and

**home economics**

name 12 careers in home economic management

**Math (pls help)**

write the number in expanded form. 1) 46,182 2) 20, 397

**foreign language**

How do I translate this poem into English (it's in portuguese)? Eu queria você perto de mim Queria poder abraçar com todo meu carinho A gente se encontra apenas nos sonhos Por que a gente é tão feliz nos sonhos? Sempre vejo a gente sorrindo, se ...

**Finite Math**

Use the formula m=(y2-y1)/(x2-x1)

**physics**

our class was given an extra credit assignment where we have to design a mobile that has both the net forces and torques = 0. i have all of the masses know i just don't know how to find radii. no two masses can be in the same position nor can they be at the center of mass...

**budgets and forcasting**

How are budgeting systems used to weigh the efficiency and effectiveness of a health and human service agency? Why is this important?

**financial management**

What is the basic accounting formula?

**english**

I need help finding metaphors and assonances in 5 poems? I Played a Game I played a game. I rode my bike. I had a snack. I took a hike. I read a book. I watched T.V. I built a fort. I climbed a tree. I surfed the web. I played guitar. I caught a bug inside a jar. I called my ...

**pre-algebra**

I have two questions about finding the slope of a line. First question: Is the formula Y2-Y1 over X2-X1? Second question: When I am given a line on a graph, how do I find Y1, Y2, X1, X2 to use in finding the slope?

**Chemistry**

Every balanced equation is written so BLANK is/are conserved atoms mass a and b None of the above I thought the answer would be matter, but that's not an option. What would it be then? Thanks!

**English**

1) I heard him say that... Please explain the grammar rules for "say" (present tense) after the word "heard". 2) A Economic Development Board survey... Why is it "a" not "an"? Is it because it is "a survey"? 3) A historic ...

**Chemistry**

We say that an ionic bond is the electrostatic force of attraction between oppositely charged ions. What does electrostatic mean?

**English----Writing**

That is a really popular question in the internet and I am sure you will find the proper answer for it. If you feel like to about to fail, you may get the service from Prime Writing and your paper will be written by the professional writers

**Chemistry**

Is sulphuric acid covalent? Please explain. Thanks.

**Chemistry-confused**

I am rather confused. Is sand considered a mixture or a compound? Some have said it is a compound because it is silicon dioxide. Others have said it is a mixture because it is impure silicon dioxide. So...?

**Chemistry-help**

What is the chemical equation for the reaction between iron and sulphur to produce iron sulphide? Do we write sulphur as S or S8?

**Science**

Do potato cells have chloroplasts?

**Health**

The most serious type of allergic reaction? a.atrial fibrillation b.psoriasis c.anaphylaxis d.lupus

**Chemistry-please help**

Can calcium react with chlorine gas to give calcium chloride?

**stats**

chi square for independence 1) my obtained value does not exceed the critical value, I will reject the alternate and accept the null. Do I state that the results is due to chance and there is no relationship between the variables.

**physics**

idk the answer i am trying to find the answer for my own homework. GUESS WHAT? chicken butt. jk. I need help on my hw too since i got work we didn't practice for. Ok ONE question of the three we didn't learn. So.....I cant really help you. Sorry.

**chemistry**

I read in a book that gas particles move rapidly in all directions. Somehow I find that random directions is better.The word "all" sounds a bit weird. What do you think?

**Chemistry-help needed**

1) Does Alumnium react with steam to give metal oxide and hydrogen gas? 2) Does Aluminium react with dilute hydrochloric acid? What are the products? 3) Will Tin react with dilute hydrochloric acid to give tin(II)chloride and hydrogen gas?

**Science**

"Blow up a balloon and tie it up. Leave it for a few days. After a few days, the balloon becomes smaller.Why?" The answer given is that the air particles diffuse out of the balloon. Can you please explain the answer? I understand that diffusion involves particles ...

**science-chemistry**

For diatomic molecule, must the 2 atoms be of the same element, e.g H2?Is CO a diatomic molecule?

**Science**

1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed volume? 3) The statement "...

**Science-Chemistry**

1)Fill in the blanks. In a liquid, particles are _____arranged. They move about in ____ directions and slide over one another. Can I say "irregularly" & "any" as the answers? I know "random directions" is better, but can we accept "any ...

**chemistry**

thank you.

**chemistry**

In an atom, there is a force that holds the protons & neutrons in the nucleus. Is this force called the nuclear force? What about the force of attraction between the nucleus and electrons? Is is called the electrostatic force of attraction?

**Chemistry**

If you look at the Periodic Table,you will see chlorine with a relative atomic mass of 35.5. That means the average mass of a chlorine atom found in nature is ________?

**Home School. PLEASE HELP ME!!**

4. is A its on page 36

**computers**

I was wondering if anybody could please tell me what I need to do I went to work on my power point project and when I turned on my computer a lot of my icons were missing such as my excel power point microsoft office 2007 my documents pictures my back ground ( wall paper is ...

**Physics**

What are the differences between a motor and a generator? I know they both use electromagnets, but how do they use them differently?

**Physics**

If the current in a wire is 0.1A, how long will it take for 10C of charge to pass through it?

**natural logs**

can't use a graphing calculator (not allowed). I'm trying to find the area between curves, if that helps.

**natural logs**

Solve for x: ln(x+1)+ 2 = x^2 – 8x + 12

**African and Hispanic Studies**

What is Jim Cummins' "Intervention Model" all about. Present the elements of this model and in your opinion, can it be successful in reversing the history of failure the Puerto Rican children have experienced in the American schools? Illustrate some of the ...

**PHysics**

a 15g bullet strikes and becomes embedded in a 1.1kg block of wood placed on a surface in front of the gun. if the coefficient of kinetic friction between the block and the surface is 0.25 and the impact drives the block a distance of 95m before it comes to rest, what was the ...

**chem-help**

I got that A was Cl2 and B was CH2 but i do not understand how to get the grams of C produced, i am confused at this point.

**chem-help**

no i did identify compounds A and B i just do not understand how to do part a

**chem-help**

Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a temperature of 15°C...

**5th grade**

There are 7 girls in a bus. Each girl has 7 backpacks. In each backpack, there are 7 big cats. For every big cat there are 7 little cats. Question: How many legs are there in the bus?

**Chemistry**

Thanks!

**Chemistry**

Hi, This is one of my chem hw problems. Does anyone have links to websites that might help me solve this..or equations? It sounds like there are two parts to the question but I'm not sure. Volts and Joules? 1. Electrons are used to determine the structure of crystal ...

**math help**

Is it supposed to be 5 square root of (x ^7 and y^4)? It should be 5 then you expand everything in the sqroot to be (x x x x x x x y y y y) Then take out for every two of each letter, make it one whole one..... so you get 5 x^3 y^2 squareroot (x) I think that's what it ...

**algebra 2**

You should just subtract it as that .... -6 sqroot 7

**History**

Thank you for helping me.

**History**

How many times has the U.S Constitution been altered over the past 200 years?

**Chem/Physics**

1. The half-life for the (first-order) radioactive decay of 14C is 5730 yr (it emits a β ray with an energy of 0.16 MeV). An archaeological sample contained wood that had only 72 percent of the 14C found in living trees. What is its age? I got 500years? 2. The ...

**Chem/Physics**

Hi! I'm having lots of trouble figuring these two out.....if you could help that would be great- thanks!! 1. The half-life for the (first-order) radioactive decay of 14C is 5730 yr (it emits a β ray with an energy of 0.16 MeV). An archaeological sample contained wood ...

**Physics: Non uniform motion**

thanks! but what do i do when the time isnt given like in the first question?

**Physics: Non uniform motion**

I have not done much physics before: I don't get how to do questions that deal with what happened in a particular SECOND So questions like: - A stone which is dropped from rest into a mine shaft falls a distance of 24.5 m DURING THE LAST SECOND. Find depth of the shaft or...

**Physics**

1) A fish jumps out of the water with a speed of 6.36 m/s. If the fish is in a stream with water speed = to 1.5 m/s, how high can the fish jump if it leaves the water traveling vertically upwards relative to the earth? 2)A ball is thrown by someone on a train moving at 10 m/s ...

**health**

what is the definition of social and physical health?

**Algebra**

Solve:25x^4-20x^2+3=0 =(sqrt5/5),-(sqrt5/5),(sqrt15/5),(-sqrt15/5). Can you tell me which one is correct.This is a second post to the first one.

**Algebra**

Thanks

**Algebra**

thanks

**Algebra**

25x^4-20x^2+3=0 = x= i sqrt3/5,-i sqrt3/5. I used the method complete the square. is this is correct

**help**

thanks

**help**

Subtract. Simplify by collecting like radical terms if possible. 3sqrt18-3sqrt2 =6sqrt2 I did help.

**Algebra**

thanks

**Algebra**

Use the foil method to find the product. (4x^6-7)(x^8-4) this is the answer that I got:4x^14-7x^8-16x^6+28

**Algebra 1**

PERFORM THE INDICATED OPERATIONS AND SIMPLIFY. x-8/x-9-x+1/x+9+x-27/x^2-81=x^3-81x^2-7x-27/x^2 Can you check this equation for me.

**dog behavior re post**

please check my answer thanks so much Which of the following best describes when extinction occurs A When a CS is repeatedly prsented and periodically followed ba a US B When a CS is repeatedly presented without the prsention of a US C CS and US are presented together D CS is ...

**dog behavior**

please check my answer thanks so much for your help. True of False generalization means The tendecy to respond to stimuli resmbling the conditioned stmulus I said True

**dog behavior**

please check my answer thank you very much for your help The Premack princciple suggets that A. reinforcement is highly frustrating the dog B. A more desirable activity can serve as a reinforcer for aless desirable activity C reinforcement isn't dependent on the dog ...

**dog behavior**

Please check my answer thank you very much For optimal appetitive classical conditioning which of the following is not important. A The dog should be hungry B THe training enviorment should be relatively distraction free C. THe dog should be give the chane to "use the ...

**dog behavior**

Please check my answer thank you very much True or False Traning a dog to respond to the word "Good" as a conditioned reinforcer is accomplished by saying "GOOD" just before prsenting food I said True

**dog behavior**

please check my answer thank you for your help :) True or False Systematic desensitization can be used to reduce fear I said True

**dog behavior**

please check my answer thanks for your help :) Which of the following is an example of an unconditioned response? A. begging behavior at meal time B barking to get attention C Salivatig when food is taken ito the dog 's mouth D salavating when the dog hears the owner ...

**dog behavior**

please check my answer thanks for your help :) During extinction, an instrumenatl behavior may initially increase as the result of what ? A failure of the dog to obey the new instruction B. an extinction burst C. temorary defiance D. punishment resistance I said A

**dog behavior**

please check my naswer for me thanks for your help :) True or False Ivan Pavlov is credited with the systematic study of conditioned reflexive behavior I said True

**statistics**

. P(at least one head) is the same as 1 - P(no heads). Now, P(no heads) = 1/2 * 1/2 = 1/4 so P(at least one head) = 3/4. P(6) = 1/6. The total is 3/4 * 1/6 = 1/8. actually for part a is it possible the answer could be 1/8?

**statistics**

Another person had the exact same answers as you. This is for a major grade! Thank You!!

**statistics**

If you flipped a penny and a nickel, and rolled a die, what is the probability of: a. getting at least one head on the coins and a 6 on the die? b. getting a head on both coins and a 4 on the die ? c. getting a head on both coins and a 3 or a 5 on the die? d. getting a head on...

**Chemistry**

I don't understand how you get the mols product formed of (c) and why there are moles of a that remain unreacted

**english**

Are you serious? Come up with your own answers and others will help. This is a simple homework that you could get done in minutes.

**english**

Thanks Ms. Sue

**english**

When liquor was banned in 1920, hospitalizations for alcoholism and related diseases plummeted; in 1933, when Prohibition was repealed, alcohol-related illnesses rose sharply again. Legalization of cocaine, heroin, and marijuana would not curb abuse of those substances. a) ...

**Math**

Can someone tell me this is right? Look for the domain. f(x)=log(sub3)(5x+1) 5x+1<=0 (5x/5)<=(-1/5) x<=(-1/5) x>(-1/5) (-1/5,oo) -domain

**Algebra**

I am looking for the domain. f(x)=log(sub3)(5x+1) 5x+1<=0 (5x/5)<=(-1/5) x<=(-1/5) x>(-1/5) (-1/5,oo) -domain