Answer:
Valence Electrons are transferred/exchanged
Answer:
B. Contains more matter
Explanation:
The answer is C because it makes sense to me and a golf ball does contain more matter than a tennis ball
Sorry if I'm wrong :(
There are three which are:
dispersion/london/van der vaals forces
dipole/dipole
hydrogen bonding
Answer:
73.33% is the percent yield
Explanation:
Percent yield is defined as:
Actual yield (4.883g) / Theoretical yield * 100
Based on the reaction:
Cu(NO₃)₂(aq) + K₂CO₃(aq) → CuCO₃(s) + 2KNO₃(aq)
<em>1 mole of copper nitrate reacts per mol of potassium carbonate.</em>
<em />
To solve this question we must find limiting reactant. With limiting reactant we can find the theoretical moles of solid produced and its mass as follows:
<em>Moles Cu(NO₃)₂:</em>
0.1639L * (0.329mol / L) = 0.0539 moles
<em>Moles K₂CO₃:</em>
0.1639L * (0.528mol / L) = 0.0865 moles
As the reaction is 1:1, the limiting reactant is Cu(NO₃)₂.
1 mol of Cu(NO₃)₂ produces 1 mol of CuCO₃. That means theoretical moles produced are 0.0539 moles. And the mass is:
<em>Mass CuCO₃ -Molar mass: 123.55g/mol-</em>
0.0539 moles * (123.55g / mol) = 6.659g of CuCO₃ is the theoretical mass
And percent yield:
4.883g / 6.659g * 100
<h3>73.33% is the percent yield</h3>
