Using standard formation enthalpies, calculate the standard reaction enthalpy for this reaction. 6CO2(g) + 6H2O(l)C6H12O6 + 6O2(g) ANSWER: kJ/mol

Answer:

B

Explanation:

Weathering is the physical and chemical breakdown of rock at the earth's surface. ... The physical breakdown of rock involves breaking rock down into smaller pieces through mechanical weathering processes. These processes include abrasion, frost wedging, pressure release (unloading), and organic activity.

Answer:

I think D

Explanation:

it has both H and G in the planes.

I think the answer is: C. An endothermic reaction that decreases in entropy

An endothermic reaction that decreases in entropy. Hence, option C is correct.

Entropy is the energy of a system that is unuseful to do work.

For a reaction to be spontaneous, the Gibbs' Free Energy must be negative.

The equation for Gibbs Free energy is given by:

G= H-TS

Where, G = Gibbs free energy

H = Enthalpy of the reaction

T = Temperature of the system

S = Entropy of the system

Sign convention for all the quantities:

For H: It is negative for exothermic reactions and positive for endothermic reactions

For S:  It is positive when there is an increase in entropy and it is negative when there is a decrease in entropy.

If we want G to be negative, the conditions necessary are:

G= (-ve) - (+ve) = -ve

The product of temperature and entropy must be positive and that will be positive when there is increase in entropy at any temperature.

Hence, option C is correct.

Learn more about enthalpy and entropy, here:

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Answer:

1. B. Ammonia and hexane will not dissolve because one molecule is polar and the other is non polar.

2. 1400 mL

Explanation:

In chemistry, like dissolve like! Ammonia is a polar molecule having a significant dipole moment owing to its three N-H bonds. On the other hand, hexane is a purely non-polar hydrocarbon hence the two substances can never dissolve in each other.

From the dilution formula;

C1V1=C2V2

C1= Initial concentration of the solution

V1 = Initial volume of the solution

C2 = Final concentration of the solution

V2= Final volume of the solution

2.8 M * 750.0 mL = 1.5 M * V2

V2 = 2.8 M * 750.0 mL/1.5 M

V2 = 1400 mL

Answer:

2Ga(OH)3 + 3Hg2Cl2 → 6Hg(OH) + 2GaCl3

Explanation:

Answer: 2Ga(OH)3 + 3Hg2Cl2 → 6Hg(OH) + 2GaCl3

reaction type: Double Displacement

Answer:

Ture

Explanation:

Ture

True

True

True

Answer:

Intervention of Maillard reactions by the addition of natural and synthetic chemical compounds has previously been directed toward removing one of the reactants (the amino groups or the reducing sugars) or adding sulfur-containing compounds, such as sulfur dioxide or N-acetyl cysteine, which inhibit the reactions

Explanation:

Answer: B

Explanation: sorry if I'm too late but i just did this question and that was the right answer

Answer:

3, 2

Explanation:

Balanced equation:

N2 + 3 H2 = 2 NH3

Answer:

Natural phenomena such as melting glaciers is due to the rise in temperature. This will result to extinction of flora and fauna. Moreover it can cause extreme flooding due to rise in water level in other water bodies such as rivers, lakes

Answer: Nerves, Brain and spinal cord

Explanation:the other choices are either part of the cardiovascular system or the respiratory system

Answer:

Explanation:

It's 21 /

Answer:

La fuerza de atracción en el hielo sólido, que es un compuesto molecular, se debe al enlace de hidrógeno (que es la fuerza intermolecular más fuerte) entre las moléculas individuales de agua, por lo tanto, el hielo sólido es bastante fuerte y se mantiene en una estructura rígida.

Cuando el hielo se calienta, las moléculas absorben suficiente energía y, en lugar de solo la vibración del hidrógeno dentro de un área muy pequeña, los enlaces de hidrógeno se doblan y se estiran, con los ángulos y la longitud de los enlaces oscilando dentro de los rangos esperados.

Como tal, las fuerzas de atracción en el agua líquida son menores que las del hielo y las fuerzas de repulsión entre cargas similares tienen un efecto mayor en la plasticidad del agua que el hielo.

Explanation:

Answer:

Friction. Hope I helped.

Answer: Calcium ion Ca² : 1 s² 2s² 2p ^6 (sorry I don't get 6 similar way as 2) 3s² 3p^6

Also 18 electrons, because Calcium donates two 4s electrons

Explanation:

Answer:

156748

Explanation:

The first number is on the magnetism card 1

The combination  contains only the numbers found on the cards showing techniques to separate mixtures 1,5,6,7,8

The last number is on the filtering card

The red is in the middle half of 8 is 4

Answer:

Granite

Explanation:

Answer:

Granite

Explanation:

Igneous forms when rock is cooled and hardens by Magma.

And the option granite, which forms as magma cools deep underground

Hope it helps have a Good Day

Answer and Explanation:

Dado que la capa de ozono protege la vida en la Tierra actuando como filtro de radiaciones nocivas del Sol, su destrucción trae como consecuencia un aumento de la radiacion UV que puede provocar:

- daños en animales y en el hombre: aumento de casos de cáncer de piel, cataratas en ojos, debilitamiento del sistema inmune.

- alteración en el desarrollo de especies vegetales .

- contribución al efecto invernadero y al calentamiento global.

Para revertir el deterioro de la capa de ozono, podemos tomar algunas medidas:

- no utilizar productos que contengan clorofluorocarbonos (CFC), como por ejemplo algunos aerosoles.

- evitar el uso de productos que contengan halones

- evitar el uso de hidrofluorcarbonos (HFCF)

Estos compuestos químicos reaccionan y destruyen el ozono, por lo que si evitamos utilizarlos, con el tiempo la capa de ozono se recuperará.

Answer:

HCI - BASE

KOH - ACID

H2SO4 - ACID

H30 + :- BASE

NAOH - ACID

Answer:

I think it is either a or b

Explanation:

c or d has the correct names and Roman numerals.

Answer:

a different acid and base

Explanation:

Answer: The answer is C

covalent bonds have a lower melting and boiling point

HOPE THIS HELPS !! IF YOU NEED MORE HELP FEEL FREE TO COMMENT IN THE COMMENT SECTION

Answer:

[tex]K=1.12x10^9[/tex]

Explanation:

Hello there!

Unfortunately, the question is not given in the question; however, it is possible for us to compute the equilibrium constant as the problem is providing the concentrations at equilibrium. Thus, we first set up the equilibrium expression as products/reactants:

[tex]K=\frac{[NO_2]^2}{[NO]^2[O_2]}[/tex]

Then, we plug in the concentrations at equilibrium to obtain the equilibrium constant as follows:

[tex]K=\frac{(0.95)^2}{(0.0024)^2(0.00014)}\\\\K=1.12x10^9[/tex]

In addition, we can infer this is a reaction that predominantly tends to the product (NO2) as K>>>>1.

Best regards!

Answer:

0.66g/mL

Explanation:

La densidad es una propiedad de la materia definida como la masa de una sustancia en un determinado volumen.

En este problema, podemos hallar la densidad sabiendo que la diferencia de masas del pic vacío y el pic lleno es la masa de la solución y que el volumen que ocupa es de 25mL:

Masa solución:

25g - 8.5g = 16.5g

Así, la densidad será:

16.5g / 25mL =

Answer:

1.031atm

Explanation: