There are 8.786 g
<h3>Further explanation
</h3>
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
2.30 x 10²³ atoms in Na :
mass :
Answer:
C) Modernization of humans
<h3>1. Answer:</h3>
2MnO4−(aq) + 5C2O42−(aq) + 16 H3O+(aq) → 2 Mn2+(aq) + 10 CO2(g) + 24 H2O(l)
- Element being reduced -Mn
- Element being oxidized - C
<h3>Explanation:</h3>
- Redox reactions are reactions that involves both oxidation and reduction.
- Reduction involves the gain of electrons by an atom while oxidation is the loss of electrons.
- A reduction may also refer to a decrease in the oxidation number of an element while oxidation is an increase in the oxidation number of an element in a reaction.
2MnO4−(aq) + 5C2O42−(aq) + 16 H3O+(aq) → 2 Mn2+(aq) + 10 CO2(g) + 24 H2O(l)
- The oxidation number of Mn on the left side of the equation is +7 and on the right side of the equation is +2, therefore Mn has undergone reduction.
- On the other hand, the oxidation number of Carbon (C) on the left side of the equation is +3 and on the right side of the equation is +4, therefore Carbon(C) has undergone oxidation.
<h3>2. Answer</h3>
3 Cu(s) + 8 HNO3(aq) → 3 Cu(NO3)2(aq) + 2 NO(aq) + 4 H2O(l)
- Element being reduced - N
- Element being oxidized - Cu
<h3>Explanation </h3>
3 Cu(s) + 8 HNO3(aq) → 3 Cu(NO3)2(aq) + 2 NO(aq) + 4 H2O(l)
- The oxidation number of Cu on the left side is 0 and on the right side is +2, therefore, copper has undergone oxidation.
- The oxidation number of Nitrogen on the left side is +5 and on the right side is +2, therefore, nitrogen has undergone reduction.
Answer:
<h3>The answer is 21195 N</h3>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 785 × 27
We have the final answer as
<h3>21195 N</h3>
Hope this helps you
Answer:
Particles become sorted on the basis of density, because of the energy of the transporting medium. High energy currents can carry larger fragments. As the energy decreases, heavier particles are deposited and lighter fragments continue to be transported. This results in sorting due to density.
Explanation:
