Sunday

January 25, 2015

January 25, 2015

Total # Posts: 50

**Chemistry**

A 0.327 g sample of a mixture of NaOH(s) and NaCl(s) requires 31.5 mL of 0.150 M HCl(aq) to react with all the NaOH(s). What is the mass percentage of the NaOH(s) in the mixture?
*November 14, 2014*

**chemistry**

Block A of an unknown metal has a volume of 125 cm3. Block B of a different metal has a volume of 145 cm3. If block A has a greater mass than block B, what can be said of the relative densities of the two metals? (Assume that both blocks are solid.)
*September 1, 2014*

**Math**

Lynn was shopping and found a purse that was marked with a discount of "1/3" off. If the original cost of the purse was $80, how much will Lynn pay?
*July 28, 2014*

**College Algebra**

Find the present value of $100,000 if interest is paid at a rate of 8% per year, compounded monthly, for 5 years.
*February 20, 2014*

**math**

Why do the cow hate the farmer?
*January 13, 2014*

**Health (10th Grade)**

So, it would be C then?
*October 28, 2013*

**Health (10th Grade)**

What is one role fats play in keeping your body healthy? A. maintaining healthy skin and nails B. aiding muscle growth C. removing waste D.lubricating joints I believe it's C, but I'm not quite sure. I'm a cyber school student and I can't seem to find the ...
*October 28, 2013*

**math**

The point A (7, 6) is reflected about the line x = 3, then about the line x = k. The final image is A”(5, 6). What is the value of k?
*May 30, 2013*

**4th grade math**

Hi! This question says Joe is thinking of o function machine.He says that the output is 12 if the input is 4.what are 2 rules that he could be thinking of for his function machine?( I would really be grateful if you helped me) ;)thanks
*May 14, 2013*

**Physics**

Five forces act on an object. (1) 63 N at 90° (2) 40 N at 0° (3) 83 N at 270° (4) 40 N at 180° (5) 50 N at 60° What are the magnitude and direction of a sixth force that would produce equilibrium?
*December 15, 2012*

**World Cultures**

The Greek armies had retreated due to alex the Great aiding in the defeat of the Mauryan.
*December 8, 2012*

**Statistics**

According to insurance records a car with a certain protection system will be recovered 90% of the time. Find the probability that 5 of 6 stolen cars will be recovered.
*November 20, 2012*

**Math**

What nominal annual rate of interest compounded yearly is required to double an investment in 13 years?
*November 10, 2012*

**GVCS**

how do u find the standard numeral for 9.3x10^-4
*March 16, 2011*

**Chemistry**

how would you sent up aluminum carbonate --> aluminum oxide + carbon dioxide. im guessing AlCo3 --> AlO3+Co2 but i dont think thats right
*November 16, 2010*

**Chemistry**

Write skeleton equations for these reactions. a. butane(l) + oxygen (g) --> carbon dioxide(g) + water(l). b. aluminum carbonate(s)--> aluminum oxide(s) + carbon dioxide(g) c. silver nitrate(aq) + sodium sulfide(aq) --> silver sulfide(s) + sodium nitrate(aq) d. iron(s...
*November 16, 2010*

**Chemistry**

okay im getting closer(: so would nicket(II) oxide be NiO2 and dichlrine pentoxide be Cl2O5
*November 16, 2010*

**Chemistry**

okay im sure i can get one right soon. now if it has a polyatomic in the equation like Tin(IV) nitrate would it be SnNO3? and if it produces iron(III)nitrate would it be Fe(NO3)3
*November 16, 2010*

**Chemistry**

sorry but i want to make sure im doing this right. for lithium+gold(III chloride-->lithium chloride+gold would it be Li+AuCl2-->LiCl2+Au?
*November 16, 2010*

**Chemistry**

okay now i get it. thanks so much
*November 16, 2010*

**Chemistry**

So the reactants dont need the charge number only the products but for letter c. what do you do when you have two elements would it be FeO3?
*November 16, 2010*

**Chemistry**

okay. if i was balancing it though would it be H2+ I2-->2HI? and for the second one to see if im doing this right: Al3+I2--> AlI3?
*November 16, 2010*

**Chemistry**

So the first one would be: H2+I--> HI2?
*November 16, 2010*

**Chemistry**

how do you do it? like how do i write it like not in word but like with the symbols
*November 16, 2010*

**physics**

If you're in a smooth-riding bus that is going at 50 km/h and you flip a coin vertically, what is the horizontal velocity of the coin in midair?
*August 14, 2010*

**Spanish**

My answers were incorrect. These were the instructions. Choose the correct form of the following verbs in the pretérito perfecto: Ayer _______ toda la tarde (all afternoon). My answer neivo. Anoche María y yo _______ una mila (mile) My answer corrieron. Mi jefe ...
*June 9, 2010*

**Algebra**

I got 3 and -2. But to check it, wouldn't you substitue it the 3 and then the -2 in the original equation and it should be 0=0?
*April 22, 2010*

**Algebra**

Solve the quadratic equation. 3x^2-15x+18=0 I know that the formula to quadratic equation is x=-b+and-(square root)b^2-4ac divided by 2a. I know that a=3, b=-15 and c=18, then subsitute in and get two answers, my problem is that I keep getting an answer that does not work ...
*April 22, 2010*

**Chemistry**

In order to raise the temperature of 5.0 Kg of water from 20 deg. C to 30 deg. C, a 2.0 kg iron bar is heated and then dropped into the water. What should the starting temperature of the bar be? (Specific heat Fe is 0.22 cal/g-deg.)
*February 23, 2010*

**chemistry**

hi
*December 12, 2009*

**physical science **

If the larger boulder has a mass of 50 kg and a height of 150 m from the ground what is its GPE?
*December 7, 2009*

**physical science **

If the larger boulder has a mass of 50 kg and a height of 150 m from the ground what is its GPE?
*December 7, 2009*

**physics**

A has greater PE?
*December 7, 2009*

**physics**

A large boulder sits at the top edge of a cliff, this is boulder A. A smaller boulder sits on a ledge half way down the same cliff, this is boulder B. Which boulder has the greatest potential energy, A or B?
*December 7, 2009*

**Math**

i have th exact same problem!
*November 17, 2009*

**7th grade language arts**

What are some introduction techniques for writing a persuasive letter?
*October 25, 2009*

**Making a handmade computer, printer, mouse and tow**

Just wandering if you had any good ideas how to create these items? They said that we could make it out of anything....styrofoam..cardboard...you have to be creative and decorate to your own style...?? Please HELP !!!! THANKS!!!! LEXIE
*October 1, 2009*

**Algebra 2**

Find all the values of j such that the quadratic equation 5x^2+x+4j=0 has no real solutions. Write your answer as an equality or inequality in terms of j.
*August 16, 2009*

**Science**

What type of reasoning occurs when bits of specific information are gathered together in order to make a generalization? deductive inductive demonstrative productive im not sure...my teacher just gives us the worksheet and leaves to the lounge
*February 17, 2009*

**language arts**

It's a panda planet keep them here. This is part of a poem! Please tell me if there is a coma after the word planet. Thank you so much for the help.
*November 14, 2008*

**6th grade**

using all the beads
*November 5, 2008*

**6th grade**

how many different bracelets can be made from 7 white beads and 2 grey ones//?
*November 5, 2008*

**math**

how many different bracelets from 7 white beads and 2 gray ones.
*November 5, 2008*

**science**

what kind of animal cells may have alot of mitochondria present?
*November 2, 2008*

**science**

what kinds of animal cells might have alot of mitochondria present?
*November 2, 2008*

**Algebra**

what are the tho digit perfect squares? i am really confused! please help
*September 16, 2008*

**Statistics**

Help me understand this problem, I have several more like this & want to get an understanding on to solve it: The mean score,x, on an aptitude test for a random sample of 9 students was 64. Assuming that standard deviation=16, construct a 95.44% confidence interval for the ...
*September 13, 2008*

**math**

12-4.8= show work
*September 5, 2008*

**triangle**

1,600x8= what on a math triangle i cant get it
*March 11, 2008*

**history**

The Georgian style was used when America was being controlled by Great Britain. Jefferson wanted to emphasize their independence and freedom by creating non-British buildings.
*October 22, 2006*

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