A use the half life of carbon 14 to find the value or the parameters b and plot the function
Ice melting is a physical change because you are not getting rid of anything, it is simply transforming into another state. The ice is melting because it is heating up and causing the molecules to speed up ans spread out, meaning all of the ice`s properties are still there, just in a different form.
Answer:
A. Physical Change
Answer:
The student measured the cup and got an incorrect answer
Explanation:
because he was in a rush.
Answer:
1) FALSE
2) TRUE
3) FALSE
4) FALSE
5) TRUE
Explanation:
<em>1)</em> The first excited state corresponds to n=3. <em>FALSE. </em>The ground state corresponds to n=1 and first excited state corresponds to n=2.
<em>2)</em> The wavelength of light emitted when the electron drops from n=3 to n=2 is shorter than the wavelength of light emitted if the electron falls from n=3 to n=1. <em>TRUE. </em>As the n=2 state is in a higher energy than n=1, the energy difference between n=2 and n=3 are shorter than differences between n=1 and n=3 states.
<em>3)</em> It takes more energy to ionize the electron from n=3 than it does from the ground state. <em>FALSE. </em>An electron with a high energy will be less-atracted by the nucleus than a electron with a low energy because is farther of it.
<em>4)</em> The wavelength of the light emitted when the electron returns to the ground state from n=3 is larger than the wavelength of light absorbed to go from n=1 to n=3. <em>FALSE. </em>The energy differences in light emitted and light absorbed is the same.
<em>5)</em> The electron is farther from the nucleus on average in the n=3 state than in the ground state. <em>TRUE. </em>According Bohr's model, the greater energy level, the farther from the nucleus it is.
I hope it helps!