Answer:
If 5.9 moles of CO₂ react, 5.9 moles of CuO will also react.
Explanation:
The balanced reaction is:
CuO + CO₂ → CuCO₃
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:
- CuO: 1 mole
- CO₂: 1 mole
- CuCO₃: 1 mole
You can see that the stoichiometric relationship between CuO and CO₂ is 1: 1. In other words, for each mole of CuO that reacts, one mole of CO₂ will also react.
So <u><em>if 5.9 moles of CO₂ react, 5.9 moles of CuO will also react.</em></u>
I do believe the answer is A. Hope this helps.
Let's see
- ∆S refers to the total change in entropy of system.
Graphite was in solid state and oxygen was in gaseous state.
When they synthesized they converted to gaseous state
- So randomness of particles increases
- So entropy also increases
∆S=+ve
Answer: Weak acids are poor conductors of electricity.
Explanation:
Weak acids are defined as the acids which dissociate weakly or partially when dissolved in water (polar solvent).
For example, 
Due to less dissociation there will be less number of ions present in a solution of weak acid. As a result, a weak acid will be poor conductor of electricity.
As electricity is the flow of ions.
Thus, we can conclude that weak acids are poor conductors of electricity.
Explanation:
Accuracy is the nearness of observed values or measured values to the true value.
The difference between the measured and observed value gives the error incurred during the experimental procedure.
Here are some ways to improve the accuracy of measurements;
- Use the right instrument to make recordings and to take measurements.
- Employ the right hands and improve your technical knowledge.
- Be very careful and observant while making measurement.
- Ensure the instruments are properly calibrated.
- Make sure the experiment follows the right design.
