Answer:
Ca+Fe(No3)2 —> Fe+Ca(No3)2
Explanation:
This reaction is already balanced, you can tell because if you add up all the numbers that are on each side you get the same number. (3+2=2+3)
Which energy resource has the advantage of producing clean energy that is less harmful to the environment?
Coal being extracted from the ground.
Modern wind mills.
A man filling a car with gasoline.
Answer:
wind energy
Explanation:
Energy resource that has the advantage of producing clean energy that is less harmful to the environment is Modern wind mills.
What is Wind mill?A windmill is a machine structure that helps to convert wind power into rotational energy using wings called sails or blades, by tradition specifically to mill grain, but the term has also been extended to encompass windpumps, wind turbines, and other applications, in some parts of the English-speaking world.
Wind is a form of solar energy caused by a combination of three concurrent events:
The sun unevenly heating the atmosphere
Irregularities of the earth's surface
The rotation of the earth.
Given, options for Energy resource that has the advantage of producing clean energy that is less harmful are-
-Coal being extracted from the ground.
-Modern wind mills.
-A man filling a car with gasoline
Therefore, Energy resource that has the advantage of producing clean energy that is less harmful to the environment is Modern wind mills.
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Do lone pair electrons form covalent bonds YES or No
Answer:
yeslone pair of electrons form covalent bonds
Explanation:
Hope it helps you<3ii. Using the equation Erd-Ecathode - Eanode, calculate the overall cell potential for the cell in step b.
Be sure to show all steps completed to arrive at the answer
Answer:
0.637 V
Explanation:
The balanced redox reaction is:
Here Zn undergoes oxidation by loss of electrons, thus act as anode. Lead undergoes reduction by gain of electrons and thus act as cathode.
Where both are standard reduction potentials.
= -0.763
= -0.126
The standard emf of a cell is 0.637 V
types of reactions lab report
Answer:
There are five main types of chemical reactions. These are synthesis, decomposition, combustion, single replacement and double replacement.
Explanation:
Hope Its helps you ! : )CaCl2 (s) + 2 H2O → Ca(OH)2 (aq) + 2 HCl (g) When Addie added CaCl2 to the water in her flask, she noted that the flask heated up. What conclusion can be drawn about the bond energy of products and reactants? A) More energy was absorbed in the formation of chemical bonds than released in the breaking of chemical bonds. B) Less energy was absorbed in the breaking of chemical bonds than released in the formation of chemical bonds. C) More energy was absorbed in the breaking of chemical bonds than released in the formation of chemical bonds. D) Less energy was absorbed in the formation of chemical bonds than released in the breaking of chemical bonds.
Answer: the answer is b
Explanation: the formation of bonds releases energy and the breaking of bonds always involves an absorption of energy
2.5 mol KCL in 1.0 L of solution
The molarity of the solution is 2.5 M
Stoichiometry
From the question, we are to determine the molarity of the solution
Using the formula,
[tex]Molarity = \frac{Number\ of\ moles}{Volume}[/tex]
From the given information
Number of moles = 2.5 moles
Volume = 1.0 L
Then,
[tex]Molarity = \frac{2.5}{1.0}[/tex]
Molarity = 2.5 M
Hence, the molarity of the solution is 2.5 M
Here is the complete question:
What is the molarity of 2.5 mol KCL in 1.0 L of solution
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2 Fe + O2 + 3 Fe2O3
What type of reaction is this.
Answer:
This is a synthesis reaction or a combination reaction
5. What are the correct coefficients in order for the equation to be balanced?
Explanation:
I hope you benefit from this
This is the correct coefficient...
What would be the multiplier if oxygen had come out to be 2.33 mol?
2
3
4
Answer:
The multiplier is 3
Explanation:
For this problem, we need to find an integer for the number of moles of oxygen. Let's see the results by multiplying 2.33 and 2, 3, 4:
2.33 mol · 2 = 4.66 moles.
2.33 mol · 3 = 6.99 moles ≈ 7 moles.
2.33 mol · 4 = 9.32 moles.
You can note that if we multiply 2.33 moles by three (3), we obtain an integer of the number of moles.
1. Ingredients of iodized salt are not limited to salt (sodium chloride) and potassium iodide. Describe the roles (or functions)
of other ingredients of iodized salt. Morton salt has the famous slogan "When It Rains It Pours". Explain how other ingredients
are related to this slogan
Iodized salt contains potassium iodate, potassium iodide, sodium iodate, and sodium iodide.
What is iodized salt?
Salt is a very important ingredient used in cooking across the world. Salt is commonly obtained from sea water. Salt can also be manufactured artificially. Large deposits of salts occur in some parts of the world.
The ingredients that are contained in iodized salt include; potassium iodate, potassium iodide, sodium iodate, and sodium iodide. The species that contain iodine supply the iodine required by the thyroid gland.
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a sealed plastic bottle falls into the ocean off australia three years later the bottle is found on a beach in france
Answer:
Wind, ocean currents, waves
Explanation:
The plastic bottle travelled this much distance due to the following factors:
a) Wind
b) Ocean currents
c) Waves
Carbon dioxide is a compound of the elements carbon and oxygen (CO2). What happened to the carbon and oxygen to create this compound?
A. they merged nuclei
B. they swapped protons
C. they combined neutrons
D. they exchanged electrons
Answer:
D. they exchanged electrons
Other than the process in the title, what are two other processes that are explained in the passage? A. the changing of seasons and precipitation B. photosynthesis and chlorophyll C. precipitation and temperature change D. photosynthesis and transpiration
PLEASE HELP
source: the life of a leaf
Answer:
life of leaf and leaf is obob
Write full electron configurations for kr
Answer:
kr means krypton
krypton atomic number is 36
electronic configuration: 1S² 2S² 2P⁶ 3S² 3P⁶3d¹⁰ 4S² 4P⁶
Explanation:
in other forms:
[Ar] 3d¹⁰ 4S²4P⁶
Fresh water is always (A)_____________________ than salt water so it (B)____________________ the salt water.
(a) less dense (b) rises above
(a) more dense (b) sinks below
3. Tom wants to make some copper oxide. Sally suggests he could make it by burning copper metal in air.
a) Why is Sally wrong?
Answer:
Because burning copper in air won't oxidize it you need to leave it in contact with air only
Explanation:
tungsten (IV)thiosulfate
What is the formula?
Answer:
The formula of Tin (IV) Thiosulfate is Sn(S₂O₃)₂
-TheUnknownScientist 72
How does the nervous system help an organism meet a challenge of life?
Questions:
It digests food in order to allow the organism to obtain energy.
It responds to stimuli to help protect an organism and maintain structure.
It provides structure to protect internal organs, which helps protect the organism.
It carries and transports oxygen to all the cells of the body.
Answer:
it would be the second option. It responds to stimuli to help protect an organism and maintain structure
Answer:
it is the second one
Explanation:
i took the test
How many moles of C3H8 contain 4.95 x 10^24 hydrogen atoms?
Answer:
3.09 moles C3H8 8.22 moles C3H8 1.03moles C3H8 6.58moles C3H8 9.73moles C3H3
One mole of every substance contains 6.02×10²³ atoms. The no.of moles of C₃H₈ containing 4.95×10²⁴ hydrogen atoms is 1.02 moles.
What is one moles?A substance which contains 6.02×10²³ atoms is called one mole of that substance. C₃H₈ contains 8 hydrogens. The atomic mass of hydrogen is 1.008 g.
The number of hydrogen atoms in one mole of C₃H₈ = 1.008× 6.02×10²³
= 4.85×10²⁴ hydrogen atoms.
Thus the no.of moles of C₃H₈ that contains 4.95×10²⁴ hydrogen atoms is calculated as follows:
(4.95×10²⁴× 1)/4.85×10²⁴ = 1.02 moles.
Therefore, 1.02 moles of C₃H₈ contains 4.95×10²⁴ hydrogen atoms.
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what does the electronegravity of an atom indicate?
Answer:
The electronegativity of an atom indicates the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons.
Hope this helps!!!
Calculate the moles of Fe in 4.95x 1022 atoms of Fe .
Answer:
I’m guessing that you mean 4.95x 10^22,
3074.31 moles
Explanation:
(4.95x10^22) grams x (1) mole (6.02x10^23) grams
You cancel you the grams and then you have solved it for moles
What coefficient should be written in front of CO2 to balance the chemical reaction?
2C8H18 + 25O2 → ______ CO2 + 18H2O
Answer:
The answer is 16 as the coefficient
Explanation:
I hope this helps
Determine the pH of 1 x 10^-2 the NaOH.
a. 2.0
b. 4.0
c. 8.0
d. 12.0
Answer:
i hope the answer is 12.0
a person uses a force of 27 n to hold a stationary trash can a distance of .5 above the ground. how much work is done on the garbage can?
Answer:
135
Explanation:
Work can be calculated with the equation: Work = Force × Distance
Hope it helps!!!Brainliest pls!!!When is a secondary source more helpful than a primary source?
A. When you are an expert in the field being studied in the experiment
B. When you want to perform the experiment yourself
C. When you want all the details of the experiment
D. When you want a quick summary of the experiment
Answer:
D. When you want a quick summary of the experiment
Explanation:
Answer:
I'm pretty sure the answer is D
Explanation:
Typically with primary sources - there is a lot of detail and secondary sources generally lack some of the key details. This is why I believe D to be right because it would be just a quick summary and a few details.
I hope this helps you :)
No organism can live forever. Therefore, in order to ensure the survival of their species, living organisms must all possess the ability to _______.
A.
die
B.
reproduce
C.
speak
D.
move
Answer:
D it's because we hot same question in my module and my teacher said I'm right
6. According to the graph above, which paper towel brand adsorbed the 5 points
most liquid?
Bounty
Brawny
Viva
What words go where?
Answer:
1) temperature,
2) plant, physical, cracks, grow
3) freeze-thaw, physical
4) rain, chemical, acid rain, fossil
Explanation:
I'm not too sure if all of these are correct, but I hope this helps
True or False: Venus has an average surface temperature
higher than that of Mercury.
The statement Venus has an average surface temperature higher than that of Mercury is true, because of the presence of the high amount of carbon dioxide.
What is surface temperature?Every body has outer surface and inner surface, so if we talk about the temperature of outer surface then we will use the word surface temperature.
As we know that carbon dioxide is a green house gas, it means this gas increase the temperature by trapping the heat content. In the Venus atmosphere high amount of carbon dioxide is present and this atmosphere traps the heat coming from the sun and have a higher surface temperature as compare to Mercury. Because in Mercury atmosphere is absent.
Hence, given statement is true.
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Assuming constant conditions, how many milliliters of chlorine gas react to yield 1.00 L of dichlorine trioxide?
Cl2(g)+O2(g)→Cl2O3(g)
At constant conditions, 1000 mL of the chlorine gas will be required to yield 1.00 L of dichlorine trioxide.
Stoichiometric equationFrom the equation of the reaction:
2Cl2(g)+3O2(g)→2Cl2O3(g)
Mole ratio of Cl2O3 and Cl2 = 1:1
At standard conditions, 1 mole of gas equals 22.4 L volume.
1.00 L of Cl2O3 would, therefore, be:
1 x 1/24 = 0.04 moles
Equivalent mole of Cl2 = 0.04 moles.
Thus, 1.00 L or 1000 mL of Cl2 will also be required.
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