Answer:
5.00 µM
Explanation:
Given data
- Initial concentration (C₁): 250.0 µM
- Initial volume (V₁): 1.00 mL
- Final concentration (C₂): ?
- Final volume (V₂): 50.0 mL
We can find the final concentration using the dilution rule.
C₁ × V₁ = C₂ × V₂
C₂ = C₁ × V₁ / V₂
C₂ = 250.0 µM × 1.00 mL / 50.0 mL
C₂ = 5.00 µM
The concentration of the diluted solution is 5.00 µM.
To convert grams to moles, we need the molar mass of the element or compound. remember you can determine the molar mass of a molecule by adding the atomic mass of each atom from the periodic table.
molar mass of Na= 23.0 g/ mol
130 g (1 mol Na/ 23.0 grams)= 5.65 moles or 6 moles.
Answer:
the answer is A.
Explanation:
I hope this helps have a fantastic day!
W(N)={2M(N)/M(NH₄NO₃)}*100%
w(N)={2*14.0 g/mol/80.0 g/mol}*100% = 35%
Answer:
Exolaiend in explanation section
Explanation:
First of all, the automatic hammer is used to drive nails into tight spaces where where we can't get a sufficient striking force if we are to use a normal regular hammer in driving the nail.
So the nail to be driven is lifted out of rest(it's position). The energy here is gravitational potential energy.
Now, when it is driven into the tight spaces, the gravitational energy would be converted to kinetic energy due to the motion and speed involved.
