Thermochemical Equations Project: Modeling Energy Changes

Assignment Summary In this assignment, you will write and balance a chemical equation. Then,you will use a table of enthalpy values to calculate the energy change in the reaction. Next, you will create a model of the energy change in the reaction.Finally, you will write an explanation that describes the energy change in the reaction.

Answer:

Thermochemical Equation

Thermochemistry

Thermochemical Equation

Define thermochemical equation.

Define heat of reaction.

What is the best way to heat a house?

Heating a home is becoming more and more expensive. Do we use gas, oil, electricity, wood? Part of the decision is based on which fuel will provide the highest amount of energy release when burned. Studies of thermochemistry can be very useful in getting reliable information for making these important choices.

a gas furnace

Thermochemical Equation

When methane gas is combusted, heat is released, making the reaction exothermic. Specifically, the combustion of 1 mol of methane releases 890.4 kilojoules of heat energy. This information can be shown as part of the balanced equation.

text{CH}_4(g)+2text{O}_2(g) rightarrow text{CO}_2(g)+2text{H}_2text{O}(l)+890.4 text{kJ}

The equation tells us that 1 mol of methane combines with 2 mol of oxygen to produce 1 mol of carbon dioxide and 2 mol of water. In the process, 890.4 kJ is released and so it is written as a product of the reaction. A thermochemical equation is a chemical equation that includes the enthalpy change of the reaction. The process in the above thermochemical equation can be shown visually in the Figure below .

Answer:

sorry

Explanation:

The chemical equation, 2 Cr + 3 Fe(NO3)2 - 3 Fe + 2 Cr(NO3)3, is an
example of which type of reaction?*

Which is not synthetic polymer?
a) Teflon
b) PVC
c) Chitin​

What is uranium classified as

Akali Metals, Akaline Metals, Metalloids, Halogen, Noble Gas, Transition Metal, Rare Earth Metal or Non-Metal?

SOMEONE PLEASE HELP I NEED THIS NOW PLEASE JUST THIS ONE QUESTION I DON’T KNOW

Which rock type(s) could be transformed into sediment?
a: sedimentary rock
b. igneous rock
c. both rock types
d. neither rock types

is it good to use alcl on the icy roads?

Karl went to the doctor complaining of a sore throat. The doctor performed
a throat culture and determined that antibiotics were not necessary. The
doctor told her to drink tea, take ibuprofen, and rest. Which type of microorganism most likely caused Karl's sore throat?
a) bacteria
b) virus
c) parasite
d) fungi

What type of reaction is shown below?
A. hydration reaction
B.addition reaction​

How many atoms are in 294 g of copper?

how many atoms are in 4.90 mol of Al2O3

give the symbols of the ions formed when sodium reacts with chlorine

17.5 mL of 0.1000M NaOH was required to neutralize 25.0 mL of HCl. What was the molarity of the HCl?

A solution of zinc nitrate is added to a solution of sodium carbonate.

When drawing the Lewis structure of a molecule, start by determining the total number of available valence based on each element's ____________ Then, use the total number of electrons needed for each element to be stable, generally based on __________ to determine the _____________ by finding the difference between the number of needed and available electrons divided by two. Next, identify the central atom, which is the element with the ______________ other than hydrogen. Finally, arrange the number of bonds around the central atom to fulfill the stable number of electrons for each element.

Hydrochloric acid is a ———— ?
A. Strong electrolyte
B. Weak electrolyte
C. Non-electrolyte
D.
E. Molecular compound

1. Goose
2.frog
3. Turkey
4.earthworm

1.
In the periodic table, all the elements in the same column have similar
and
properties.

Calculate P[NO]eq, if P [NOCI]eq = 0.33 atm, P [C12]eq = 0.50 atm, and Kp = 1.9 x 10-2.
2 NOCI(g) = 2 NO(g) + C12(g)

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How do I get a guy to like me?​

Consider the following diagram of a chemical reaction.

A series of four increasingly more complex chemical structures. The first diagram shows that when heat is applied to R single bond O single bond O single bond R, it creates 2 R single bond O with 1 electron dot. The next structure brings in more complex structures and other atoms, such as H and C. This process continues until the final molecule has a long chain of six starting with R O and ending with C with a single electron dot. There are four single side chains, 3 P h and 1 H.
What is the product that is formed in this reaction?

a polymer
a monomer
an alkyl halide
a carboxylic acid

What is a homologous structure that humans share with other vertebrates when they are fully grown?
hair
gills
spine
tail

(Please answer both, i'm giving 20 points) The more directly the sun strikes a place on earth’s surface, the more _______ the energy is and the _______ it will be. Areas that receive less direct sunlight experience colder months.

Question 1 options:

less, colder


warmer, concentrated


colder, less


concentrated, warmer

Question 2 (0.5 points)
In the Northern Hemisphere, choose ALL that apply

Question 2 options:

Summer solstice occurs when the Earth's North Pole is tilted toward the sun.


Fall and Spring Equinoxes occur when days and nights are equal in length.


The tilt and revolution of the Earth causes the seasons


Winter solstice occurs when the Earth's North Pole is tilted away from the sun.

The following table lists the speed of sound in various materials. Use this table to answer the question.

Substance Speed (m/s)
Glass 5,200
Aluminum 5,100
Iron 4,500
Copper 3,500
Salt water 1,530
Fresh water 1,500
Mercury 1,400
Hydrogen at 0°C 1,284
Ethyl Alcohol 1,125
Helium at 0°C 965
Air at 100°C 387
Air at 0°C 331
Oxygen at 0°C 316
Sound travels fastest in _____.

solids
liquids
cold gases
warm gases

Dose Anabolic Reaction helps cells multiply and stay good condition
DO NOT JUST USE UP THE POINTS I WILL REPORT YOU
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Which item is necessary to make an electromagnet?

The reaction 2Mg(s) + O2(g) --> 2MgO(s) is a
Group of answer choices
double-replacement reaction.
decomposition reaction.
synthesis reaction.
single-replacement reaction.

USATestPrep Question: This is a substance that cannot be broken down further by chemical means. Example: sodium, tungsten, and iodine.

The reaction 2KClO3(s) --> 2KCl(s) + 3O2(g) is a(n)
Group of answer choices
combustion reaction.
ionic reaction.
synthesis reaction.
decomposition reaction.

If 0.25 moles of H2O are produced, then how many moles of oxygen gas were consumed?