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3 years ago

How many total atoms are in 0.450 moles of carbon dioxide?

1 answer:

4 0

Avogadro's number tells you how many atoms are in 1 mol of every element.

So,
1 mol : 6.022x10^23 atoms = 0.450 moles : x atoms

There are 2.7099x10^23 atoms in 0.450 moles

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For the process 2SO2(g) + O2(g) --> 2SO3(g),

CaHeK987 [17]

Answer:

–187.9 J/K

Explanation:

The equation that relates the three quantities is:

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

where

$\Delta G$ is the Gibbs free energy

$\Delta H$ is the change in enthalpy of the reaction

T is the absolute temperature

$\Delta S$ is the change in entropy

In this reaction we have:

ΔS = –187.9 J/K

ΔH = –198.4 kJ = -198,400 J

T = 297.0 K

So the Gibbs free energy is

$\Delta G=-198,400-(297.0)(-187.9)=254.2 kJ$

However, here we are asked to say what is the entropy of the reaction, which is therefore

ΔS = –187.9 J/K

8 0

4 years ago

1.00 x 10-7 moles to grams

Papessa [141]

2537 Hope this helped

6 0

3 years ago

Use the Ideal Gas Law equation to find the molar mass of a 98.2 g sample of gas that fills a 50.0-liter container at STP.

Vlad [161]

Answer:

Explanation:

8 0

3 years ago

A small container of water boils at 100°C. The boiling point increases by 1°C for every 12 g of salt dissolved in the water. Det

Slav-nsk [51]

48/12=4 100-4=96 New boiling point is 96

6 0

3 years ago

Select the correct answer. What is the enthalpy for the reaction represented in the following energy diagram? A. +200 kJ B. +350

Stella [2.4K]

Answer:

Option C. +150KJ

Explanation:

Data obtained from the question include:

Heat of reactant (Hr) = 200KJ

Heat of product (Hp) = 350KJ

Change in enthalphy (ΔH) =..?

The enthalphy of the reaction can be obtained as follow:

Change in enthalphy (ΔH) = Heat of reactant (Hp) – Heat of reactant (Hr)

ΔH = Hp – Hr

ΔH = 350 – 200

ΔH = +150KJ

Therefore, the enthalphy for the reaction above is +150KJ

6 0

3 years ago