Thursday

December 18, 2014

December 18, 2014

Total # Posts: 57

**Chemistry**

Dr. Bob, Can you explain this one please? Feel free to use made up numbers. I'm not looking for an answer, I'm just not understanding this question and looking for further help. Thank you
*November 22, 2014*

**Chemistry**

Calculate the volume of concentrated reagent required to prepare the diluted solution 17 M H3PO4 to prepare 939 mL of 6.7 M H3PO4
*November 22, 2014*

**Math**

This is not the right formula
*November 3, 2014*

**CHEMISTRY**

When 10.8 g of Silver was reacted with Sulfur, 12.4 grams of product was produced (there was only one product). What is the empirical formula of the product?
*October 30, 2014*

**Honors Physics**

Give some examples of applications that resulted from work done by physicists. The answers I have are: computers, electricity, cars, and television. Are these acceptable?
*August 24, 2014*

**Honors Physics**

Give some examples of applications that have resulted from work done by physicists on the exploration of space.
*August 24, 2014*

**Honors Physics**

Give some examples of applications that resulted from work done by physicists. The answers I have are: computers, electricity, cars, and television. Are these acceptable?
*August 24, 2014*

**Maths Probability**

anyone please provide answers to above problem.
*May 15, 2014*

**Physics**

9.34*10^13
*February 25, 2014*

**social studies**

My homework from the board says "Finish color illustration for Gilgamesh" but I don't know what that means.(If someone can answer me before *8:00 am I would be very grateful.) What am I supposed to do?
*December 10, 2013*

**science**

The answer is D) Biodiversity increases as humans develop sustainable ways of using natural resources. Biodiversity is basically the variety of plant and animal life in a particular habitat. However, if humans fail to use natural resources sustainably, habitats get destroyed. ...
*December 9, 2013*

**MATH**

Following Steve's explanation, you can also have an increase by over 100%. For example, a price could increase by 200% - if the original price was $200 and then doubled to $400. This is possible because the original price was $200 - so 100% of the price is $200. When it ...
*December 9, 2013*

**English**

Your English seems nearly perfect - but you should always capitalize the pronoun 'I' when using it - and brackets should be used before the full stop. Otherwise, your English seems fantastic.
*December 9, 2013*

**MATH**

All you have to do in this situation is substitute (-2) for the variable (x) in the equation. You can do this because all coordinates are of the form (x,y). Anything in the place of (x) can be seen as equal to (x). So, substituting, we can see: 2(-2) - 3y = 5 -4 - 3y = 5 -3y...
*December 9, 2013*

**MATH**

Here, all you have to do is simply substitute (3) for the variable (x) in the equation. You can do this because all coordinates are of the form (x,y), and anything that takes the place of (x) in that form can be seen as equal to (x). The working is shown below: y = 2(3) + 4 y...
*December 9, 2013*

**MATH**

Here, all you have to do is substitute (7) for (y) in the equation. You can do this because all coordinates are of the form (x,y), and any number that is in the place of (y) in this format can be seen as equal to (y). The working is shown below: 5x - (7) = 3 5x = 10 x = 2 As ...
*December 9, 2013*

**chem help**

I may be incorrect here - as this contradicts with the previous answer, but this is how I would tackle this problem. One mole of nitrogen has a mass of 14 g/mole (which can be seen on the periodic table). In one mole of NaNO3 (sodium nitrate), the mass is 85g/mole (adding all ...
*December 9, 2013*

**5th grade science**

Well, it is certainly not a property of electrons, protons, and neutrons - only electrons and protons, as neutrons have a neutral charge (so no charge whatsoever). Forgive me if I am incorrect here, but I do not believe that you can simply conduct 'current'. You can ...
*December 6, 2013*

**5th grade science**

As a follow-up to PsyDAG's answer, a non-metal is an element which, quite simply, is not a metal. These non-metals include Oxygen, Nitrogen, and Chlorine to name a few. Copper, however, is a metal, and therefore copper wire cannot be correct as the question asks for a non-...
*December 6, 2013*

**7th grade mat**

This answer is absolutely correct - well done!
*December 5, 2013*

**math**

126.00
*September 9, 2013*

**Physics**

Four equal +6.00-μC point charges are placed at the corners of a square 2.00 m on each side. ( = 1/4π = 8.99 × 109 N · m2/C2) (a) What is the electric potential (relative to infinity) due to these charges at the center of this square?
*May 27, 2013*

**trig**

A hiker walks 900m east and 500m south .Find the bearing of the finishing position from the staring point?
*May 25, 2013*

**statistica**

What is the range of the values 2.0, 3.7, 4.9, 5.0, 5.7, 6.7, 8.5, and 9.0?
*May 10, 2013*

**Economics**

i'm doing the same question and i found it to be 1, however i did not rearrange the demand curve. how are we supposed to reaggrange the curve? confused *
*April 10, 2013*

**math**

Application Giovanni is flying his Cessna airplane on a heading as shown. His instrument panel shows an air speed of 130 mi/h. (Air speed is the speed in still air without wind.) However, there is a 20 mi/h crosswind. What is the resulting speed of the plane?
*March 8, 2013*

**Physics**

anyone?
*March 5, 2013*

**physics**

An electron is projected, with an initial speed of vi=1.38e+05 m/sec, directly towards a proton that is essentially at rest. If the electron is initially a great distance from the proton, at what distance from the proton is its speed instantaneously equal to twice its initial ...
*March 4, 2013*

**physics**

and the aswers are?
*March 3, 2013*

**MATH**

UNSCRAMBLE 25 LETTERS TO MAKE 8 WORDS THAT ANSWER THE QUESTION WHAT'S WRONG WITH GETTING A HAIRCUT? LETTERS: H I T I S B E T E R T O G E T T S E M L O C R E T
*February 21, 2013*

**math**

A trapezoid has an area of one and a perimeter of five. If this pattern continues, what is the perimeter of a large trapezoid with an area of 96
*February 21, 2013*

**physics**

You step into an elevator holding a glass of water filled to a depth of 7.0 cm. After a moment, the elevator moves upward with constant acceleration, increasing its speed from 0 to 2.8 m/s in 3.8 s.
*November 23, 2011*

**chemistry**

so we did a chemistry lab to find the relationship between temperature and volume or charle's law. In the experiment, i got t1v1=372K, 267.2 cm^3 t2v2=277K,169.1 cm^3 so i graphed that THen they told us to chose 2 other points from that line, TaVa and TbVb and find its K ...
*May 5, 2011*

**math**

Two angles of the triangle have given measures. Find the measure of the third angle x degrees, 120 degrees minus x degrees
*April 13, 2011*

**algebra**

6x-y=-4 2x+2y=15 Solve for y
*December 9, 2010*

**chemistry**

There is a fairly simple answer to this: The question states that you assume there are three magnesium isotopes. If Magnesium 24 has an abundance of 78.99%, and Magnesium 26 has a percent abundance of 11.01%, the percent abundance of Magnesium 25 is simple to calculate. The ...
*December 8, 2010*

**Pre-Algebra**

Don't you just times each other by the LCD (which is 28) times 7 on 1/4 and get 7/28 times 4 on 2/7 and get 8/28? So 7/28<8/28??
*October 20, 2010*

**marketing**

using an MIS requires extensive training; a DSS does not
*August 5, 2010*

**Algebra**

A piggy bank contains only nickels and dimes. In all there are 42 coins with a total value of $3.85. How many nickels are in the piggy bank?
*August 4, 2010*

**Short Story**

It's pretty good....hope the teacher won't get bored to death though....the storyline is not that great but just add some more to it.....right now, it's just like blah
*May 13, 2010*

**social studies**

Dont know:(
*April 14, 2010*

**For Hellpp - Algebra 2**

woops sorry edited the wrong box there we go
*May 20, 2009*

**Math**

What are names for shapes of curves?
*February 22, 2008*

**Chemistry**

so we did a chemistry lab to find the relationship between temperature and volume or charle's law. In the experiment, i got t1v1=372K, 267.2 cm^3 t2v2=277K,169.1 cm^3 so i graphed that THen they told us to chose 2 other points from that line, TaVa and TbVb and find its K ...
*February 16, 2008*

**Chemistry**

I am graphing temperature vs volume. Temperature-horizontal axis, Volume-vertical axis.
*February 16, 2008*

**Chemistry**

What does the point at which your curve crosses the horizontal axis represent?
*February 16, 2008*

**Math**

For graphs what does a direct, inverse, linear and power relationships mean?
*February 16, 2008*

**algebra**

[(-1/3a^2b^3c)^2*(-9/2ab^2c^2)+(+3/5a^4b^5c^3)^2:(-3/5a^3b^2c^2)]^2:(+11/10a^2b^8c^4)
*February 6, 2008*

**U.S. History**

What would be an example of scientific management today?
*February 4, 2008*

**Chemistry**

Number and arrangement of the electron pairs around: a. C in CCl4 b. S in H2S c. Al in AlH3 d. Ga in GaCl3
*February 3, 2008*

**Chemistry**

Number and arrangement of the electron pairs around: a. C in CCl4 b. S in H2S c. Al in AlH3 d. Ga in GaCl3
*February 3, 2008*

**Alegbra II**

Factor: 125x^3 - 27 = 0
*January 29, 2008*

**Algebra II**

A feasible region has vertices at (-3,2),(4,1),(2,6) and (1,-2). Find the maximum an minimum values of the function f(x,y)=4x-y
*October 28, 2007*

**Math**

what is a significant digit
*September 11, 2007*

**physic**

Neutron stars are extremely dense objects with a mass comparable to the mass of the sun but a radius of only several thousand meters. Consider a neutron star of mass M = 1.99e+030 kg and a radius of R = 10 km. g = 1.3279e12 m/s Assuming uniform density, how much would 1.1 ...
*May 23, 2007*

**physic**

Assuming uniform density, how much would 1.1 cubic centimeters of neutron star material weigh on the surface of the earth? You need the density of the neutron star to do this. weight= mass*g=density*volume*g
*May 23, 2007*

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