Answer:The oxygen molecules are more loaded and heavier which weighs down and the molecules and don't allow the same amount of moving ability as the hydrogen moles have.
Explanation:
Do lone pair electrons form covalent bonds YES or No
Answer:
yeslone pair of electrons form covalent bonds
Explanation:
Hope it helps you<3Kjeldahl's method can be used in the estimation of __________
Answer:
Nitrogen
Explanation:
The Kjeldahl method (the test for routinely determining the crude protein content of foods) determines a food's total nitrogen content, which is then used to estimate the crude protein content using a conversion factor.
I hope this helps you
:)
Answer: im pretty sure its Nitrogen!
hopes this helps ya out! have a day full of killing demons and slaying the dark lord..lol
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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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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2 Fe + O2 + 3 Fe2O3
What type of reaction is this.
Answer:
This is a synthesis reaction or a combination reaction
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 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
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
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:
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
tungsten (IV)thiosulfate
What is the formula?
Answer:
The formula of Tin (IV) Thiosulfate is Sn(S₂O₃)₂
-TheUnknownScientist 72
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!!!can some one please help me with this question
Answer:
the atom structure in model A has more atoms and they are all the same type of atom while model B has less atoms and they are different types of atoms.
Explanation:
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!!!
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
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
You have an isotope with 23 protons and 29 neutrons. What is the mass number?
Answer:
52
Explanation:
Mass number is the sum total of protons and neutrons in an element
Therefore, Mass number = protons + neutrons
Mass number = 23 + 29
Mass number = 52
How many grams in total of potassium dichromate are there in a 250 mL bottle filled with 5 ppm solution of it?
The mass of is K2CrO7 in the 250 ml of solution is mathematically given as
x=1.25mg of K2CrO7.
Hence, 250 ml of the solution will contain 1.25mg of K2CrO7
The mass of is K2CrO7Question Parameters:
The total of potassium dichromate are there in a 250 mL bottle filled with 5 ppm solution
Generally the mass of k2CrO7 is mathematically given as
[tex]x=\frac{5mg of k2CrO7 *250ml of solution}{1000ml of solution}[/tex]
x=1.25mg of K2CrO7
Therefore,
250 ml of the solution will contain 1.25mg of K2CrO7
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ii. 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
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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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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100.00 mL of the 0.0250 M HNO3 solution by dilution of the 1.00 M HNO3
solution provided in the lab.
Taking into account the definition of dilution, the initial volume of the 1 M HNO₃ solution is 25 mL.
Definition of dilutionWhen it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.
Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeVolume requiredAssuming that you want to know the volume of HNO₃ required to produce the dilution, you know:
Ci= 1.00 MVi= ?Cf= 0.250 MVf= 100 mLReplacing in the definition of dilution:
1 M× Vi= 0.250 M× 100 mL
Solving:
Vi= (0.250 M× 100 mL)÷ 1 M
Vi= 25 mL
In summary, the initial volume of the 1 M HNO₃ solution is 25 mL.
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Simplify the following expression
Answer:
[tex] \frac{ {a}^{2} }{ {b}^{2} \times c \times {e}^{7} } [/tex]
Hope it helps you.......
earth's atmosphere is approximately 78% nitrogen and 21% oxygen. what is the mass in grams of oxygen in a cubic meter of air in a typical classroom at 1 atm and 25C (1m^3=1000L)
With the earth's atmosphere at approximately 78% nitrogen and 21% oxygen, we have that the mass in grams of oxygen is mathematically given as
Mass of O2=2.74.7g
What is the mass in grams of oxygen?Question Parameters:
Earth's atmosphere is approximately 78% nitrogen and 21% oxygen.
Generally, the equation for the ideal gas is mathematically given as
PV=nRT
Therefore
n=PV/RT
n=1*1000L/0,0821*298k
n=40.87mol
In conclusion
Where mole of O is 8.58
Therefore
Mass of O2=8.58*32
Mass of O2=2.74.7g
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Answer: 275 grams
Explanation:
Which conditions produce the largest ocean waves?
Question 3 options:
strong winds that blow for a long time over a great distance
weak winds that blow for short periods of time with a short fetch
strong winds that blow for short periods of time with a short fetch
weak winds that blow for long periods of time with a long fetch
Answer:
Strong winds that blow for a long time over a great distance.
Explanation:
Generally, the biggest and most powerful wind-generated waves are produced by strong storms that blow for a sustained period over a large area. Huge and big waves, or swells, can travel over long distances. The size of the wave depends on wind speed, wind duration, and the area over which the wind is blowing. If The speed of the wind is more, it stays for along time and it covers a larger distance then the waves produced will be very powerful and large.
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 ! : )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
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...
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
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