Answer:
2N2 + 5O2 + 2H2O → 4HNO3
Explanation:
Dinitrogen - N2
N₂ Nitrogen Gas Nitrogen Diazyne
Molar Mass of N2 Bond Polarity of N2
Dioxygen - O2
O₂ Oxygen Molecular Oxygen Diatomic Oxygen Triplet Oxygen Oxygen Gas Liquid Oxygen LOx
Molar Mass of O2 Bond Polarity of O2
Water - H2O
Dihydrogen Monoxide Dihydridooxygen [OH2] HOH Hydrogen Hydroxide Dihydrogen Oxide Oxidane Hydrogen Oxide
Molar Mass of H2O Oxidation State of H2O
Products
Nitric Acid - HNO3
Spirit Of Niter Fuming Nitric Acid Aqua Fortis Engravers Acid Hydrogen Nitrate HONO2 Peroxynitrous Acid [NO(OOH)]
Molar Mass of HNO3 Oxidation State of HNO3
A student uses visible spectrophotometry to determine the concentration of CoCl2(aq) in a sample solution. First the student prepares a set of CoCl2(aq) solutions of known concentration. Then the student uses a spectrophotometer to determine the absorbance of each of the standard solutions at a wavelength of 510nm and constructs a standard curve. Finally, the student determines the absorbance of the sample of unknown concentration. A wavelength of 510nm corresponds to an approximate frequency of 6×1014s−1 . What is the approximate energy of one photon of this light? 9×1047J 9×1047J A 3×1017J 3×1017J B 5×10−7J 5×10−7J C 4×10−19J 4×10−19J D Submit
Answer:
3.97 x 10^-19 J
Explanation:
The energy E of a photon is given by:
E = hf where h = Planck's constant = 4.14 × 10−15 eV · s and f = frequency
In this case, f = 6×10^14s−1, hence, the energy E of one photon of the light would be;
E = 4.14 × 10−15 eV · s x 6×10^14s−1
= 2.484 eV
Note that:
1 eV = 1.60 × 10−19 J
Hence,
2.484 eV = 2.484 x 1.60 × 10−19 J
= 3.97 x 10^-19 J
Hello, can someone please help me with this science question I have? because my class starts in 5 mins and I didn't finish it and no one else is answering my last question. Thanks! BTW the subject is science.
Answer:
Yes they can
Explanation:
But they need pretestino fromadverse temperatures and they need nutrients and also oxygen around the roots
Using the information below calculate the area of a triangle. base = 5 meters height = 10 meters
1.) 25 square meters
2.) 5 square meters
3.)25 meters O 5 meters
The area of a triangle : 25 m²
Further explanationGiven
A triangle. base(B) = 5 meters height(H) = 10 meters
Required
The area
Solution
The area of triangle can be formulated :
[tex]\tt A(area)=\dfrac{1}{2}\times base\times height[/tex]
Input the value :
[tex]\tt A=\dfrac{1}{2}\times 5\times 10\\\\A=25~m^2[/tex]
What happens when you put an ice-pop outside? This is for the people who don’t know
Answer:
It melts
Explanation:
Answer:
It melts?
Explanation:
What causes these H-bonds to form?
Answer: It is caused by the tendency of some atoms in molecules to attract electrons more than their accompanying atom.
3. Calculate the number of moles and mass in
gram_of_1 x 10^20mdecules of Nz gas
.
Answer:
0.17×10⁻³ mol
Mass = 0.00476 g
Explanation:
Given data:
Number of molecules of N₂ = 1 ×10²⁰ molecules
Number of moles of N₂ = ?
Mass in gram of N₂ = ?
Solution:
1 mole of any substance contain 6.022×10²³ molecules
1 ×10²⁰ molecules× 1 mol /6.022×10²³ molecules
0.17×10⁻³ mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 0.17×10⁻³ mol × 28 g/mol
Mass = 4.76×10⁻³ g
Mass = 0.00476 g
What type of energy uses turbines
with huge blades that spin when
the wind blows to generate
electricity?
Answer:
The answer is : D. Wind energy
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Answer:
w = d x f
Explanation:
hope it helps u
No help just posting a picture
Calculate: The molecular mass of a molecule is the sum of the masses of each atom in the molecule. The
unit of molecular mass is the universal mass unit (u).
Iron's atomic mass is 55.85 u, carbon's mass is 12.01 u, and oxygen's mass is 16.00 u.
Calculate the molecular mass of carbon dioxide (CO2)
Answer:
44.01
Explanation:
12.01 + 16.00 + 16.00 = 44.01
what types of organisms are most likely to become extinct (characteristics)?
Which is most likely to be damaged by an acid? A. A glass jar B. A plastic bottle C. A gold bracelet D. An aluminum can
Answer:
aluminum can
Explanation:
source: trust me bro im currently working on acid and bases and acid doesnt eat through gold
The object which is most likely to be damaged by an acid is Choice D: An aluminium can.
When an acid undergoes ionization in an aqueous solution, the positively charged ion released is; Hydroxonium ion, H30+.
In essence, the hydrogen ion of an acid can be displaced by the Aluminium ion in the aluminium can.This phenomenon is evident in the arrangement of metals in the electrochemical series.Aluminium is more reactive than the hydrogen ion. As such, an Aluminium can is most likely to be damaged by an acid.
Read more:
https://brainly.com/question/22964871
7. Base your answer to the following question on the information below and on your knowledge of biology A student designed an experiment to investigate a claim that athletes would have lower heart rates than nonathletes during exercise. After the students classified themselves as an athlete or a nonathlete, their resting pulses were determined. Then all the students performed the same exercise for four minutes and their heart rates were determined by recording the pulse rate in beats per minute. The students continued to measure their pulse rates for an additional four minutes. The average heart rate per minute for each group was determined. The data were recorded, as shown on the table below Average Heart Rate Response to Exercise (beats per minute) Time (minutes) Athlete Students Nonathlete Students Resting Pulse 68 72 1 76 78 2 82 90 Exercising Period 3 115 95 110 4 130 5 100 125 6 95 120 After Exercise 7 85 100 8 68 95 2.4 To improve the validity of the conclusion reached in this experiment, the students should repeat the experiment A) disregarding any data that don't fit the hypothesis B) with a larger number of athletes and nonathletes C) comparing the heart rates and breathing rates of males and females D) with the athletes doing different exercises than the nonathletes
How can we use properties to identify unknown minerals?
Answer:
BY NAMING THE MINERALS :>
Explanation:
Answer:
NAMING THE MINERALS
Explanation:
Which of the following metals is
obtained from its ore by heating?
A Aluminium
B. Calcium
C Iron
D. Lead
F Mercury please heeeeeeelp
Answer:
c. iron I hope it helped.....
Answer:
I think soon mercury ..........
What are the three physical properties of a copper penny?
a. color, reactivity, density
b. color, mass, oxidation
c. color, reactivity, mass
d. color, mass, shape
Help Please I'll mark Brainiest!
Write three observations that could help you identify this organism.
Answer:
the unidentified animal looked like a slug, it looked like it lives or can be in water, the body of the unidentified animal is purple, it seems to have an orange spikes coming out of it's backs.
What of these should Hailey include in her list?
Synthetic polymers are biodegradable.
Synthetic polymers are not flexible.
Synthetic polymers are recycled cheaply.
Synthetic polymers are inexpensive to produce.
Answer:
Hailey should add, they are inexpensive to produce.
Explanation:
Reason being why they are inexpensive to produce, is due to them being chemical based and easy to product in the factory setting. Which makes them extremely cheap to make.
Reason being why the others are wrong, synthetic polymers are not biodegradable as they are made in a factory with oils. Synthetic polymers are not flexible due to them being used for harder products. Synthetic polymers are not recycled cheaply as they are made with chemicals which makes it very hard to recycle.
answer:D
Explanation: i took it
Is the chemical reaction between magnesium metal and hydrochloric acid solution an acid base reaction?
Answer:
No
Explanation:
The chemical reaction between magnesium metal and hydrochloric acid solution is not an acid - base reaction.
An acid - base reaction involves an acid and base to produce salt and water.
This reaction is called a neutralization reaction. An acid is a substance that produces excess hydroxonium ions in solutions. A base produces excess hydroxyl ions in solution. When acids and base combines, the main product is a salt in water solution.will give brainlist plz help
A description of a material that scatters light that passes through it
Answer:
I believe you said that I would get brainlest if I answer!
Explanation:
A translucent material scatters the light that passes through it. You can usually see something behind a translucent object, but the details are blurred. Wax paper and frosted glass are translucent materials. A material that reflects or absorbs all of the light that strikes it is called opaque.
Multiple choice-- 16 pts!
Two moles of aluminum chloride are dissolved in two liters of water.
How does the vapor pressure of the water change?
It increases because aluminum and chloride ions displace water molecules, which escape into the gas phase.
It first decreases as aluminum chloride attracts the water molecules, but it then increases as dissolving completes and starts to push water molecules out.
It decreases because nonvolatile aluminum and chloride ions now occupy some of the volume of the system.
Answer: It decreases because nonvolatile aluminum and chloride ions now occupy some of the volume of the system.
Explanation:
Vapor pressure of a liquid is defined as the pressure exerted by the vapors in equilibrium with the liquid/solution at a particular temperature.
So, when a non-volatile solute is added to a solvent then its molecules align at the surface of liquid. As a result, less number of solvent molecules will escape from the solution. Thus, there will be decrease in vapors and thus the vapor pressure decrease.
The relative lowering of vapor pressure is directly proportional to the amount of dissolved solute.
What type of ion would be created if magnesium lost 2 electrons?
cation
anion
neutral ion
Answer:
Explanation:
It is not neutral.
Magnesium would have a charge of plus 2. That makes it a cation. The Cathode attracts + charged ions.
In a molecule of calcium sulfide, calcium has two valence electron bonds, and a sulfur atom has six valence electrons. How many lone pairs of electrons are present in the Lewis structure of calcium sulfide?
A. one
B. two
C. three
D. four
E. none
Also, state why.
There are none
Further explanationGiven
a molecule of calcium sulfide
two valence electron of Calcium(Ca)
six valence electrons of Sulfur(S)
Required
number of lone pairs of electrons
Solution
Lewis structure shows the form of bonds that occur in the valence electrons of an element or compound
Valence electrons are electrons used in a chemical bond
To achieve stability, the element S needs 2 more electrons which are obtained from 2 electrons from the Ca element,
A lone pair electron means refers to an unshared pair of electrons(not bonding to the other atoms)
This condition usually occurs in covalent bonds
As we know, the bond between Ca, which is a group 2 (metal) with Sulfur in group 16, is an ionic bond because it occurs between metal and non-metal ions, so there is no sharing of electrons, but there is a release of electrons from Ca ions to S ions to form an octet. , so all the valence electrons in S are paired
If a star moves away, its wavelengths are stretched
Answer:
This shifts the star's spectral lines toward the red end of the spectrum. The greater the shift from the normal position of the lines, the faster the star is moving.
Which of these are an atom's valence electrons?
Answer:
The Outer-most Electron shell contains the valence electrons.
Bonus Info:
Valence Electrons are used by atoms to make ionic bonds.
Answer:
Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell. We can write the configuration of oxygen's valence electrons as 2s²2p⁴.
Explanation:
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i was doing this in school and i watched a video
SOMEONE HELP ME PLEASE ILL GIVE BRAINLY
What type of reaction takes place
when propene is formed from
propanol?
A. Condensation
B. Dehydration
C. Hydration
D. Hydrolysis
E. Oxidation
Answer:
Hydration
Explanation:
* 2-propanol is converted to propene using heated alumina beads as the catalyst. The product gas is purified with a dry ice–propanol cold trap.
* the propene is hydrogenated to propane using a palladium catalyst in nearly 100% yield
Consider X + Z -> ?
Assuming the following:
The product is an ionic compound.
Element X has 2 valence electrons
Elements Z has 6 valence electrons
Which general formula would be created?
A)ZX
B)Z^2x
C)XZ
D)X2^Z
Answer:
C
Explanation:
Element Z acquires two electrons from element X for stability
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Answer:
Plants use carbon dioxide to make their food
Explanation:
The most important role of carbon dioxide in the ecosystem is that plants use the compound to make food.
Since plants are primary produces, the food is taken by other organisms in the ecosystem for their own nourishment.
In the process of photosynthesis, green plants manufacture their own food. They use inorganic substances from the ecosystem and the energy from the sun to produce organic matter. The inorganic substance is carbon dioxide and waterSo, the carbon dioxide is an important raw material for photosynthesis to occur.Enzymes help the process of _digestion.
Answer: Yes they help you digest foods in your stomach
Explanation:
If you need a refresh of them: Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life. The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion.