As this reaction takes place at higher temperatures, it is observed that the equilibrium shifts toward the products. The reaction is

Answers

Answer 1

Answer: As this reaction takes place at higher temperatures, it is observed that the equilibrium shifts toward the products. The reaction is an endothermic reaction since it requires energy for the reaction to proceed which describes an endothermic reaction.

Answer 2

Answer:

The answer is: endothermic reaction.

This reaction is endothermic (enthalpy is higher than zero), which means that heat is added.

According to Le Chatelier's principle when the reaction is endothermic heat is included as a reactant and when the temperature increased, the heat of the system increase, so the system consume some of that heat by shifting the equilibrium to the right, producing more products.

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How many moles of NaCl are contained in 100.0 mL of a 2.0 M solution?

Answers

Answer: -

0.2 moles of NaCl are contained in 100.0 mL of a 2.0 M solution

Explanation: -

Strength of NaCl = 2.0 M

Volume of NaCl solution = 100.0 mL

= $(100)/(1000)$

= 0.1 L

Number of moles of NaCl = volume of NaCl x Strength of NaCl

= 0.1 L x 2.0 M

= 0.2 moles

0.2 moles of NaCl are contained in 100.0 mL of a 2.0 M solution

Which changes occur as a cadmium atom, Cd, becomes a cadmium ion, Cd2+?(1) The Cd atom gains two electrons and its radius decreases.
(2) The Cd atom gains two electrons and its radius increases.
(3) The Cd atom loses two electrons and its radius decreases.
(4) The Cd atom loses two electrons and its radius increases.

Answers

The answer is (3). To form the cation (positive ion), Cd must lose negative charge, so two electrons are lost. This loss in electrons also increases the effective nuclear charge/ reduces electron shielding. In other words, with two less electrons to hold, the nucleus exerts a stronger attractive force on the remaining electrons, so the electron cloud is pulled closer to the nucleus. The radius therefore decreases.

Which is a physical change?A)
burning wood
Eliminate
B)
rusting metal
C)
cooking an egg
D)
freezing water

Answers

Freezing water is an example of a physical change

freezing water,answer choice d

Which type of heat transfer can cause the butter to melt?A. Convection
B. Conduction
C. Radiation
D. Heat

Answers

Answer:

radiation

LOL but also heat

Explanation:

hope this helps

The interaction of tectonic plate boundaries is associated with which of the following events? Hurricanes Tropical storms Earthquakes Tornados Previous Question

Answers

Answer:

terremotos

Explanation:

How many molecules are in 165 g of carbon dioxide?

Answers

Answer: $22.6 * 10^(23)$ molecules

Explanation:

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

For $CO_2$

Given mass= 165 g

Molar mass of $CO_2$ = 44 g/mol

Putting values in above equation, we get:

$\text{Moles of}CO_2 =(165g)/(44g/mol)=3.75mol$

According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number $6.023* 10^(23)$ of particles.

1 mole of $CO_2$ contains = $6.023* 10^(23)$ molecules of $CO_2$

Thus 3.75 moles $CO_2$ contains = $(6.023* 10^(23))/(1)* 3.75=22.6 * 10^(23)$ molecules of $CO_2$

Thus there will be $22.6 * 10^(23)$ molecules of $CO_2$

The molar mass of CO2 is 44 grams per mole.

165 grams / 44 grams per mole of CO2 = 3.75 moles CO2

Using Avogadro’s law where 1 mole of substance equals 6.023 x 10^23 molecules

3.75 moles CO2 (6.023 x 10^23 molecules /mole) = 2.26 x 10^24 molecules CO2

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