Determine the mass of the H2CO3 produced.

What do these two changes have in common?

Vladimir79 [104]

They are both physical changes (change in physical structure/appearance)

hope this helps :)

6 0

3 years ago

What is the mass (in grams) of 6.78 moles of dinitrogen pentoxide

WINSTONCH [101]

<h2>Hello!</h2>

The answer is:

There are 732.24 grams of Dinitrogen Pentoxide $N_{2}O_{5}$ in 6.78 moles of the same compound.

The dinitrogen pentoxide, or nitrogen pentoxide, is a rare salt that consists of anion and cations, and it's an important compound when preparing some kinds of explosives.

So, to answer the question, first, need to look for the molecular formula of the dinitrogen pentoxide, then, use it to calculate the mass in gram of 6.78 moles of the same compound.

The dinitrogen pentoxide formula is:

$N_{2}O_{5}$

Where, the molar mass of each element are:

$N=\frac{14g}{mol}$

$O=\frac{16g}{mol}$

Calculating the molar mass of the compound, we have:

$N_{2}O_{5}=2*(\frac{14g}{mol})+5*(\frac{16g}{mol})$

$N_{2}O_{5}=(\frac{28g}{mol})+(\frac{80g}{mol})=(\frac{108g}{mol}$

Now, calculating what is the mass of 6.78 of $N_{2}O_{5}$ , we have:

$mass=moles*MolarMass=6.78mol(N_{2}O_{5})*\frac{108g}{mol}=732.24g(N_{2}O_{5})$

So, there are 732.24 grams of Dinitrogen Pentoxide $N_{2}O_{5}$ in 6.78 moles of the same compound.

Have a nice day!

3 0

4 years ago

Describe the role of earth's water system in the rock cycle

Oxana [17]

<span>Erosion by wind or water transports the rock particles and sediments to other sooner or later hitting the ocean.then the rocks form together to make sediment rock! :D</span>

7 0

3 years ago

Butane combusts in the atmosphere and releases heat:2C4H10(g) + 13 O2(g) ---> 8 CO2(g) + 10 H2O(g)The signs of the values for

anastassius [24]

Answer: $\Delta G$ : -ve

$\Delta H$ : -ve,

$\Delta S$ : +ve

Explanation:

Endothermic reactions are those in which heat is absorbed by the system and exothermic reactions are those in which heat is released by the system.

$\Delta H$ for Endothermic reaction is positive and $\Delta H$ for Exothermic reaction is negative.

Entropy is the measure of randomness or disorder of a system. If a system moves from an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

$\Delta S$ is positive when randomness increases and $\Delta S$ is negative when randomness decreases.

$2C_4H_{10}(g)+13O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

As 15 moles of gaseous reactants are changing into 18 moles of gaseous products, randomness is increasing and thus $\Delta S$ is positive.

Using Gibbs Helmholtz equation:

$\Delta G=\Delta H-T\Delta S$

$\Delta G=(-ve)-T(+ve)$

$\Delta G=(-ve)(-ve)=-ve$

Thus $\Delta H$ is negative , $\Delta S$ is positive and $\Delta G$ is negative.

5 0

3 years ago

Consider two flasks at 25 degree Celsius, one contains an ideal gas and the other contains the real gas SO3. Which statement reg

Strike441 [17]

Answer: Option (A) is the correct answer.

Explanation:

In real gases, there exists force of attraction between the molecules at low temperature and high pressure. This is because at low temperature there occurs a decrease in kinetic energy of gas molecules and high pressure causes the molecules to come closer to each other.

As a result, forces of attraction increases as molecules come closer to each other and therefore, gases deviate from an ideal gas behavior.

And, at low pressure and high temperature there exists no force of attraction or repulsion between the molecules of a gas because they have high kinetic energy. Hence, gases behave ideally at these conditions.

Thus, we can conclude that the statement as the temperature approaches 0 K, the volume of the ideal gas will be larger than the volume of $SO_{3}$ because ideal gases lack inter-molecular forces, is true.

3 0

3 years ago