Ionic compounds have a strong force of attraction between the oppositely charged ions, so a lot of energy is needed in order to break the strong bonding force between those ions.
The mass number of this particular element is 37
An element with 17 protons will ALWAYS be chlorine.
The mass number is found by adding the element’s protons and neutrons.
protons+neutrons=mass number
Here is the math if needed,
17+20=37
Therefore the mass number is 37
I hope this helped!
Answer:
Take 3 mL of the 5 M NaCl solution, 10 mL of the 10% glucose solution, and add water for a final volume of 100 mL.
Explanation:
- In order to calculate the required volume of the 5 M NaCl solution, we calculated the moles contained in a 100 mL solution that has a concentration of 150 mM:
0.1 L * 0.150 M = 0.015 moles of NaCl
With those moles we can calculated the required volume, using the concentration of the stock solution:
0.015 mol / 5 M = 0.003 L = 3 mL.
- To make a solution that has a 1 % concentration of glucose, from a 10 % glucose solution, is the same as to make it ten times less concentrated. Thus, with a final volume of 100 mL, you would need to take 10 mL of the 10% glucose solution, because 100mL * 10/100 = 10.
So in order to prepare the solution, you would need to take 3 mL of the 5 M NaCl solution, 10 mL of the 10% glucose solution, and add water for a final volume of 100 mL.
Answer:
3.32 m
Explanation:
<u>We have:</u>
<em>f = frequency of the electromagnetics waves = 9.05x10⁷ Hz (frequency of the electromagnetic waves of FM broadcast throughout the world)</em>
<em>c = is the speed of the electromagnetics waves = 3x10⁸ m/s (speed of light)</em>
We can find the wavelength of the electromagnetics waves as follows:
Therefore, the wavelength of a certain FM radio station broadcasts electromagnetic waves is 3.32 m.
I hope it helps you!