Tuesday
October 21, 2014

Posts by kelsi


Total # Posts: 65

Chemistry, please help!!!
I have to go to work this weekend so I'm trying to get my homework finished. Could you please help me figure out this question? Calculate the mass of 1.00 mol of each of these substances: a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||) hydroxide (Fe(OH...
March 14, 2014

Chemistry
Calculate the mass of 1.00 mol of each of these substances: a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||) hydroxide (Fe(OH)3) d.) copper (Cu)
March 14, 2014

Chemistry
Same with these: How do you do them? 1.)What is the mass at 20 degrees Celsius of 5 liters of air? 2.)What is the volume in liters of a kilogram of ice at 0 degrees Celsius? 3.)What is the mass of a bar of aluminum measuring 1.0cm by 1.0cm by 10.0cm?
February 27, 2014

math
What is the rest of the question?
February 27, 2014

Chemistry
Damon, that's not the math we are using. That is more advanced. Currently, we are using the equations between density, mass, and volume.
February 27, 2014

Chemistry
Ice density: 0.9167 g/cm3 at 0 °C Aluminum density: 2.7 g/mL
February 27, 2014

Chemistry
Same with these: How do you do them? 1.)What is the mass at 20 degrees Celsius of 5 liters of air? 2.)What is the volume in liters of a kilogram of ice at 0 degrees Celsius? 3.)What is the mass of a bar of aluminum measuring 1.0cm by 1.0cm by 10.0cm?
February 27, 2014

Chemistry
I did have a lot of those questions and I used the method you did. Thanks for the help!!!!!
February 27, 2014

Chemistry
Oh! Ok, thank you! I get it know.
February 27, 2014

Chemistry
could you go through the steps in a different way maybe? I still don't get it.
February 27, 2014

Chemistry
The speed limit on a certain highway is 72km/h. What is the speed in cm/s? Could you go through each step on how to get the answer? Lots of the questions are like this one, but I don't know how to do them.
February 27, 2014

Chemistry
Light travels at a speed of 3.00 times 10^10 cm/s. What is the speed of light in kilometers/hour?
February 21, 2014

Chemistry
An atom of gold has a mass of 3.271 times 10^-22g. How many atoms of gold are in 5.00g of gold?
February 21, 2014

Chemistry
What conversion factor would you use to convert cubic decimeters to milliliters?
February 21, 2014

Algebra
Graph y<-x+2
December 14, 2013

Algebra
Describe the transformation of y=5(x-1)^2 from the parent function (y=x^2)
December 14, 2013

Algebra
x^2*x^2/x^4= ?
December 14, 2013

Chemistry
Thank you for your help!
November 3, 2013

Chemistry
Methane gas (carbon tetrahydride) reacts with oxygen by combustion: CH4 + 2O2 -> CO2 + 2H2O a.)How many moles of methane are needed to produce 3.5*10-4 moles of carbon dioxide? b.)How many moles of oxygen are needed to react form the 3.5*10-4 moles of carbon dioxide? c.)How...
November 3, 2013

Chemistry
Aluminum bromide and sodium hydroxide react to form aluminum hydroxide and sodium bromide. a.)How many moles of sodium bromide can be formed from 1.55 moles of aluminum bromide? b.)How many moles of aluminum hydroxide may be formed from 4.65 moles of sodium hydroxide?
November 3, 2013

Chemistry
Aluminum metal and hydrogen chloride react to form aluminum chloride and hydrogen gas. a.)How many moles of aluminum metal are needed to produce 3.33 moles of aluminum chloride? b.)How many moles of hydrogen chloride are needed to react with this number of moles of aluminum ...
November 3, 2013

Pre-Algebra
10^7 is really 10000000, or 1 followed by 7 zeros. 10 million * 2.5 is 2.5 * 10 which is 25 million. 25,000,000
October 18, 2013

Timeline
Thanks. :D
October 18, 2013

Timeline
I'm making a timeline for the scientist that help contribute to the Heliocentric Theory from Aristotle to Halley.
October 18, 2013

Timeline
Is there a website that makes timelines for you and puts the right increments between these dates : 322 B. C. to 1742?
October 18, 2013

Math
Mark's time is 10 laps in 20 minutes. 20 minutes * 3 = 1 hour. 10 laps * 3 = 30 laps. Mark has the speed of 150 miles per hour. In an hour he ran 30 laps/150 miles. This means that each lap was 5 miles. Tom ran 5 laps. 5 laps * 5 miles is 25 miles in 15 minutes. 15 * 4 = 1...
October 18, 2013

The Titanic
I'm researching on the Titanic and when the crew members saw that the ship was going to sink, who did they let get on the lifeboats?
October 13, 2013

maths
It's A x = 0. Google up "graph x = 0" and see if it crosses those points.
October 12, 2013

Quotes
I'm doing this essay, and I would really like a few names on women who have gone to war and a couple of their quotes. Thanks
October 12, 2013

maths
A for the 1st one, 45 dollars per hour, x, is 45x. The fixed-service is a one-time thing so it's c = 45x + 65.The 2nd one is D. The original cost of the copier is 5,500. 5500-2500 = 3000. This is the cost reduction over the ten years. 3000/10 is 300: The amount it gets ...
October 12, 2013

math
The slope is -1/6. The y-intercept is 5. To graph you start at (0, 5) and you go up once and over to the left 6 times. rise/run
October 11, 2013

Live Tutors
Thank You!!!!!!!!
September 29, 2013

Live Tutors
Is there a website that has live tutors for free? Not like tutor. com when you have to sign up with a credit card for a trial.
September 29, 2013

physics
If only conservative forces are acting, total mechanical energy (KE + PE) is not necessarily conserved. True or False?
April 15, 2013

physics
Friction leads to a loss (or dissipation) of mechanical energy. True or False?
April 15, 2013

physics
For non-conservative forces, the work done does depend upon the path taken. True or False?
April 15, 2013

physics
The work done by non-conservative forces is equal to the total change in kinetic and potential energy. True or False?
April 15, 2013

Physics
A popular amusement park ride looks like a huge cylinder of radius 3 m, where people stand up along the vertical walls on top of a floor which can drop away. The cylinder begins to rotate faster and faster, and when it reaches its highest speed the floor drops away. Clearly ...
February 13, 2013

Math
What is the Greatest Common Divisor of 19 and 18?
June 14, 2012

Physics Superpostion Principle
four charged particles are placed so that each particle is at the corner of a square. the sides of the square are 15 cm. the charge at the upper left corner is +3.0 microcoulombs, the charge at the upper right corner is -6.0 microcoulombs, the charge at teh lower left corner ...
May 16, 2012

Physics
The Superpostion Principle: Three point charges q1, q2 and q3 like along the x-axis at x=0, x=3.0cm and x=5.0cm, respectively. calculate the magnitude and direction of the electric force on each of the three point charges when q1 = +6.0 microcoulombs q2= +1.5 microcoulombs and...
May 16, 2012

Physics
A balloon rubbed against denim gains a charge of -8.0 uC. What is the electric force between the balloon and the denim when the two are separted by a distance of 5.0 cm? (Assume that the charges are located at a point!)
May 13, 2012

Physics
A balloon rubbed against denim gains a charge of -8.0 uC. What is the electric force between the balloon and the denim when the two are separted by a distance of 5.0 cm? (Assume that the charges are located at a point!)
May 13, 2012

ENGLISH
Unscramble the letters: N A N Qu I I R A B I N S O U I O TO MAKE THE BIGGEST WORD
February 10, 2012

Animal Skeletal and Muscular Systems
Which of the following is an example of voluntary muscle activity? a. scratching b. movement of food down the intestine c. heart contractions d. movement of urine into the bladder Which of the following muscles are used when breathing? a. intercostal and pectoral b. ...
October 1, 2011

physics
A ball is thrown vertically upward with a speed of 26.8 m/s from a height of 1.9 m. How long does the ball take to hit the ground after it reaches its highest point?
September 28, 2011

Animal Skeletal and Muscular Systems
1.) The development of an animal follows which of the following growth sequences? a. cells, organs, tissues, organ systems b. cells, tissues, organs, organ systems c. cells, organ systems, tissues, organs, d. tissues, cells, organs, organ systems 2.) During an operation, a ...
September 21, 2011

pre algebra
which inequalty statment is true? a. 8 < ã78 <9 b. 38< ã78 <40 c. 77 < ã78 <79 d. 6.083 < ã78 <6.085
August 30, 2011

books
I need some information on DeeDee from "Early Candlelight" by Maud Hart Lovelace. It was a hard read for me. Also, a summary of some of the main events would be great! Thanks.
May 22, 2011

physics
A load of 46 N attached to a spring that is hanging vertically stretches the spring 0.23 m. What is the spring constant? Answer in units of N/m.
February 24, 2011

physics
A load of 46 N attached to a spring that is hanging vertically stretches the spring 0.23 m. What is the spring constant? Answer in units of N/m.
February 24, 2011

physics
A mass of 0.52 kg attached to a vertical spring stretches the spring 39 cm from its original equilibrium position. The acceleration of gravity is 9.81 m/s2 . What is the spring constant?
February 24, 2011

math
Ren this is substitution method and I am so confused
February 17, 2010

math
8x+5y=184, x-y=3
February 17, 2010

writing. language arts
thanks guys that really helped both of them. Kelsi <3
September 23, 2009

writing. language arts
hello, well i need some help. how would you make a sentence using the word immense? Thanks, Kelsi <3
September 23, 2009

physics
A glider on an air track is connected by springs to either end of the track. Both springs have the same spring constant,k , and the glider has mass M. A)Determine the frequency of the oscillation, assuming no damping, if k= 125N/m and M= 250g. (I got the answer to be 5.03 hz) ...
May 25, 2009

physics torque and shelf
it won't let me post it. apparently it seems to be 34cm long, 2cm of which is inserted in in the slot. so the block is 34cmx3cm inserted in a 2cm long slot on the left.
May 22, 2009

physics torque and shelf
When a wood shelf of mass 6.1 kg is fastened inside a slot in a vertical support, the support exerts a torque on the shelf. The board is 32cm wide by 3cm tall. the slot is 2 cm wide (3cm tall)on the lefthand side. So there are three vertical forces. A) Calculate the upward ...
May 22, 2009

physics incline
problem is that i already used that for velocity (same answer) and it's not unfortunately not the right answer.
May 22, 2009

physics loop (PLEASE HELP)
i can't figure how to set this up. it starts at height h and there's a loop at at ground level with radius r.
May 22, 2009

physics
sorry, the units didn't show up. it's .36 m^2, 4.0cm, 45cm, 85cm, 2.4cm
May 21, 2009

physics
You need to siphon water from a clogged sink. The sink has an area of 0.36 and is filled to a height of 4.0 . Your siphon tube rises 45 above the bottom of the sink and then descends 85 to a pail as shown in the figure. The siphon tube has a diameter of 2.4 A)Assuming that the...
May 21, 2009

math
100%-15%= 85% 306/85%= 360 100%-10%= 90% 360/90%= 400 Hope this helps
April 21, 2009

Algebra
sovle the compound inequality 8<w+3<10
January 13, 2008

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