Answer:
I think this would be iron
Explanation:
Answer:
<h2>69.3 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
volume = 55 mL
density = 1.26 g/mL
mass = 1.26 × 55 = 69.3 g
We have the final answer as
<h3>69.3 g</h3>
Hope this helps you
A 0.250 L solution of NH4Cl contains (0.250 L)(0.35 mol/L) = 0.0875 moles of dissolved NH4Cl. Converting this quantity to mass, we get (0.0875 mol NH4Cl)(53.491 g/mol) = 4.7 g NH4Cl (two significant figures).
So, approximately 4.7 g of NH4Cl dissolved in a 0.250 L solution will have a concentration of 0.35 L.
Divide by 1000
145÷1000=0.145
Hope this will be helpful.
The ionization energy will increase substantially when 11th electron is removed compared to when the 10th electron is removed.
<h3>What is ionization energy?</h3>
Ionization energy is the energy required to remove one or more electrons from a neutral atom in its gaseous state to form a positively-charged ion.
The ionization energy increases steadily as successive electrons are removed from an atom. A substantial increase in ionization energy occurs with the removal of an electron from a filled inner shell.
The 10th electrons is the last electron in the L shell of atoms. The 11th electron is the first electron in a filled inner shell.
Therefore, ionization energy will increase substantially when 11th electron is removed compared to when the 10th electron is removed.
Note that there was no attached graph and the answer was given based on the general trend observed in ionization energies.
Learn more about ionization energy at: brainly.com/question/1445179
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