Ask question

Ask question

All categories

3 years ago

5

In my class we were watching a movie. The teacher gave us a review worksheet and she asked: Do you think the world will end this

year? True or False. Why or Why not.

1 answer:

Serggg [28]3 years ago

6 0

Um for this question it is all about your beliefes and how you view them.

You might be interested in

Enthalpy of formation (kJ/mol) C6H12O6(s)-1260 O2 (g)0 CO2 (g)-393.5 H2O (l)-285.8 Calculate the enthalpy of combustion per mole

trapecia [35]

Answer : The enthalpy of combustion per mole of $C_6H_{12}O_6$ is -2815.8 kJ/mol

Explanation :

Enthalpy change : It is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as $\Delta H^o$

The equation used to calculate enthalpy change is of a reaction is:

$\Delta H^o_{rxn}=\sum [n\times \Delta H^o_f(product)]-\sum [n\times \Delta H^o_f(reactant)]$

The equilibrium reaction follows:

$C_6H_{12}O_6(s)+6O_2(g)\rightleftharpoons 6CO_2(g)+6H_2O(l)$

The equation for the enthalpy change of the above reaction is:

$\Delta H^o_{rxn}=[(n_{(CO_2)}\times \Delta H^o_f_{(CO_2)})+(n_{(H_2O)}\times \Delta H^o_f_{(H_2O)})]-[(n_{(C_6H_{12}O_6)}\times \Delta H^o_f_{(C_6H_{12}O_6)})+(n_{(O_2)}\times \Delta H^o_f_{(O_2)})]$

We are given:

$\Delta H^o_f_{(C_6H_{12}O_6(s))}=-1260kJ/mol\\\Delta H^o_f_{(O_2(g))}=0kJ/mol\\\Delta H^o_f_{(CO_2(g))}=-393.5kJ/mol\\\Delta H^o_f_{(H_2O(l))}=-285.8kJ/mol$

Putting values in above equation, we get:

$\Delta H^o_{rxn}=[(6\times -393.5)+(6\times -285.8)]-[(1\times -1260)+(6\times 0)]=-2815.8kJ/mol$

Therefore, the enthalpy of combustion per mole of $C_6H_{12}O_6$ is -2815.8 kJ/mol

6 0

4 years ago

Read 2 more answers

Which group contains elements that are most likely to have similar properties

Alika [10]

I believe it's alkali metals and alkaline earth metals.

5 0

3 years ago

Elements are arranged in the periodic table based on various patterns. For example, elements found in the rows near the top

Leni [432]

The rows are called periods

3 0

3 years ago

Read 2 more answers

How many moles of nitroglycerin were in the container originally?

Gemiola [76]

Answer:

4.75

Explanation:

I hope this helped!

7 0

3 years ago

One mole of Beryllium weighs 9.0122 grams. How many atoms of Beryllium are

Masteriza [31]

B is the correct answer 9.0122

6 0

3 years ago