Answer: I don't know. I am sorry.
Explanation: Because I don't understand your question. I am so, so, so sorry.
The number of atoms in 30.0 g of K would be 4.632 x
atoms.
<h3>Avogadro's number</h3>
1 mole of a substance contains 6.022 x
atoms.
Mole of 30.0 g of K potassium = 30/39
= 0.7692 moles
Hence, 0.7692 moles of K would contain
0.7692 x 6.022 x
atoms.
= 4.632 x
atoms.
More on Avogadro's number can be found here: brainly.com/question/1445383
Answer:
<em>8,459x10⁻³ M of Cr₂O₇²⁻</em>
Explanation:
The equation for the reaction of Fe²⁺ with Cr₂O₇²⁻ is:
Cr₂O₇²⁻(aq) + 6Fe²⁺(aq)+14H₃O⁺(aq) → 2Cr³⁺(aq) + 6Fe³⁺(aq)+21H₂O(l)
The moles of Fe²⁺ that you required for a complete reaction of Cr₂O₇²⁻ are:
0,01515 L ×
= 2,0301x10⁻³ moles of Fe²⁺
By the equation of the reaction, 1 mol of Cr₂O₇²⁻ reacts with 6 moles of Fe²⁺, thus, moles of Cr₂O₇²⁻ are:
2,0301x10⁻³ moles of Fe²⁺×
= 3,3835x10⁻⁴ moles of Cr₂O₇²⁻
The molarity is:
= <em>8,459x10⁻³ M of </em>Cr₂O₇²⁻
I hope it helps!
Explanation:
it's true that Lysosomes break down old and worn out cell parts....
The arrangement within energy levels of the seven electrons of an atom of nitrogen is 2.5 (that is the first sub shell= 2 while the second sub shell=5)
explanation
In every atom the first energy level can accommodate a maximum of two (2) electrons. The next energy level can accommodate a maximum of 8 electrons. Therefore the seven electron for nitrogen, 2 electron are put on first sub shell while other other 5 are putted in the second sub shell.