Sunday

February 19, 2017
Total # Posts: 32

**science**

What is the percent mass of calcium in a calcium supplement if 1.28-g of calcium carbonate is extracted from a 2.72-g pill?

*February 12, 2017*

**English**

Description: does anyone has teas 6, the new version , passage about new York central park, earth cousin, or time management , if i anyone has it let me know am willing to pay anything for it

*January 17, 2017*

**Science**

Consider the diatomic molecule Na2. For simplicity let the basis set consist of the orbitals: and . In the molecule the overlap integral between the 3s orbitals is 0.45. Answer the following questions using the orbital energies determined using the Revised Slater’s Rules...

*November 6, 2016*

**Geography**

1.B 2.D 3.A 4.C 5.C 6.D 7.B 8.C 9.A 10.B

*May 16, 2016*

**Can someone help me on math?**

Hello? Morgan?

*February 1, 2016*

**Can someone help me on math?**

Yes, I know. But, did you saw my comment?

*February 1, 2016*

**Can someone help me on math?**

Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

*February 1, 2016*

**Hello... It's me....**

Is someone there?

*February 1, 2016*

**More math**

Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

*February 1, 2016*

**More math**

So, first one good? Second one good, too?

*February 1, 2016*

**More math**

Calculate the simple interest for each situation. Choose THREE that have a simple interest greater than $800.00. a. $2,000.00 at 6% for 7 years *** b. $4,500.00 at 3% for 6 years *** c. $1,400.00 at 6% for 9 years d. $5,000,00 at 7% for 3 years *** e. $800.00 at 15% for 5 ...

*February 1, 2016*

**Math help**

The price of a calculator is $12.50. The sales tax is 7.5%. How much will you pay for the calculator? a. $13.40 b. $13.44 * c. $13.57 d. 13.61 Thank you.

*February 1, 2016*

**chem 101**

Calculate the amount of heat required to raise the temperature of a 25 g sample of water from 9 ∘C to 30 ∘C. Express your answer using two significant figures.

*January 27, 2016*

**math**

solve(sin(pi/2 -(20/a)*((1-(20/a)^2)^.5)))

*October 6, 2014*

**Teachers aide**

A loss of a parent is considered to be an example of a/an ______stress?

*April 18, 2014*

**Teachers aide**

important concept that children learn by modeling other children is associated with which one of the following researchers?

*April 6, 2014*

**Adult education**

To find the ZPD of a given student?

*April 5, 2014*

**Adult education**

To find the ZPD of a given student,you should

*April 5, 2014*

**Adult education**

Mike becomes angry when he can’t solve a mathematical problem, and slams his book down on the desk. Since his behavior is disruptive to his classmates, you wish to devise a scale by which you can gauge the impact it has on his fellow students. In doing so, you’re ...

*April 5, 2014*

**L.A**

Educating and caring for young children in changing society?

*April 4, 2014*

**L.A**

A common sympton of a behaviour disorder is?

*March 31, 2014*

**Plz help me.**

Educating and caring for young children in changing society

*March 13, 2014*

**chimestry**

if the volume of the vapor had been assumed to be 125ml instead of your measured volume,what would have been the percent error in your report? molar mass of the compound?explain

*April 6, 2013*

**College Chemistry**

if the volume of the vapor had been assumed to be 125ml instead of your measured volume,what would have been the percent error in your report? molar mass of the compound?explain

*March 13, 2013*

**Algebra 1**

There are no constraints on the system.

*December 18, 2012*

**math**

y=5(x-3)

*December 29, 2011*

**chemistry**

A metal whose threshold frequency is 9.02×1014

*February 14, 2011*

**general chemistry**

An electron traveling at 2.1×E5 m/s has an uncertainty in its velocity of 7.98×E4 m/s. What is the uncertainty in its position?

*February 13, 2011*

**general chemistry**

An electron has an uncertainty in its position of 527 pm .What is the uncertainty in its velocity?

*February 13, 2011*

**general chemistry**

A metal whose threshold frequency is 9.02×1014 s-1 emits an electron with a velocity of 7.11×E5 m/s when radiation of 1.26×1015 s-1 strikes the metal. Use these data to calculate the mass of the electron

*February 13, 2011*

**general chemistry**

An X-ray photon of wavelength 0.948nm strikes a surface. The emitted electron has a kinetic energy of 979 eV. What is the binding energy of the electron in Kjol/mol ?

*February 13, 2011*

**general chemistry**

Calculate the de Broglie wavelength (in pm ) of a hydrogen atom traveling 445 m/s.

*February 13, 2011*

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