Answer:
More energy is released from the old substance than the new substance needs to form its chemical bonds
Explanation:
Edge 2020
H20 = 2.741 x 10^23
C6H8 = 1.0823 x 10^23
Answer:
Ionic substance
Explanation:
An ionic substance is formed when oppositely charged ions link up to form an infinitely large lattice structure that can only be described in terms of unit cells.
Ionic substances may consist of billions of oppositely charged ions. Ionic substances are hard, have high melting and boiling points and do not conduct electricity in the solid state because the ions are not free in the solid state.
However, in solution or molten state, the substance conducts electricity since the ions which are the charge carriers are now mobile.
Answer:
so 0.15 moles X 22.4 dm3/mole=3.36 dm3. Next we find the moles of hexane combusted, and then the moles of CO2. Finally, we find the volume of CO2 using the fact that at STP, 1 mole of gas = 22.4 dm3.
Answer:
![P_{CO_2}=25mmHg](https://tex.z-dn.net/?f=P_%7BCO_2%7D%3D25mmHg)
Explanation:
Hello there!
In this case, according to the Dalton's law, which explains that the total pressure of a gaseous system equals the sum of the partial pressures of the gases composing, for the gaseous mixture composed by oxygen, nitrogen and carbon dioxide it would be possible to write:
![P_{tot}=P_{N_2}+P_{O_2}+P_{CO_2}](https://tex.z-dn.net/?f=P_%7Btot%7D%3DP_%7BN_2%7D%2BP_%7BO_2%7D%2BP_%7BCO_2%7D)
Now, given the pressure of the system and those of oxygen and nitrogen, we calculate that of carbon dioxide as shown below:
![P_{CO_2}=P_{tot}-P_{N_2}-P_{O_2}\\\\P_{CO_2}=250mmHg-50mmHg-175mmHg\\\\P_{CO_2}=25mmHg](https://tex.z-dn.net/?f=P_%7BCO_2%7D%3DP_%7Btot%7D-P_%7BN_2%7D-P_%7BO_2%7D%5C%5C%5C%5CP_%7BCO_2%7D%3D250mmHg-50mmHg-175mmHg%5C%5C%5C%5CP_%7BCO_2%7D%3D25mmHg)
Best regards!