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Posts by soso

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?

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

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...

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

Can someone help me on math?
Hello? Morgan?

Can someone help me on math?
Yes, I know. But, did you saw my comment?

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 ...

Hello... It's me....
Is someone there?

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 ...

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

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 ...

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.

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.

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

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

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

Adult education
To find the ZPD of a given student?

Adult education
To find the ZPD of a given student,you should

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 ...

L.A
Educating and caring for young children in changing society?

L.A
A common sympton of a behaviour disorder is?

Plz help me.
Educating and caring for young children in changing society

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

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

Algebra 1
There are no constraints on the system.

math
y=5(x-3)

chemistry
A metal whose threshold frequency is 9.02×1014

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?

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

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

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 ?

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

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