given the fact that nitrogen is abundant in the atmosphere why is it included in fertilizers
Answer:
Explanation:
Nitrogen fertilizers are added to soil because nitrogen is very important for plant growth and most organisms can not utilize atmospheric nitrogen. Even though the percentage of nitrogen in the atmosphere is very high, yet it is not available to most living organisms for use because the energy required to break the bonds that hold the diatomic nitrogen together is very high
Is thermal energy being transferred from the metal pan to the eggs by radiation in this image? Why or why not?
No, thermal energy is not being transferred from the metal pan to the eggs by radiation in this image.
What is radiation?Radiation can be described as energy or particles from a source that travels through space or other mediums. Light, heat, microwaves and wireless communications are all forms of radiation.
It is energy that comes from a source and travels through space at the speed of light. This energy has an electric field and a magnetic field associated with it, and has wave-like properties. You could also call radiation “electromagnetic waves”.
In the image, since eggs are in direct contact with the pan therefore it is conduction and not radiation.
Therefore, No, thermal energy is not being transferred from the metal pan to the eggs by radiation in this image.
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how could two objects change in order for there to be a stronger electric force between them?
Answer:
Increasing the separation distance between objects decreases the force of attraction or repulsion between the objects.
If a cat climbs a tree , what chemical process is taking place to provide the power for this movement?
Answer:
Respiration
Explanation:
Mitochondria convert glucose and oxygen to carbon dioxide, water. This reaction (respiration) releases energy whigh can be used to climb a tree and much more.
An enclosed 20 ml metal cylinder was filled with a gas sample at room temperature. The sample then was transferred to an empty 40 ml enclosed container, also at room temperature. After being transferred, the volume of the gas was:.
Answer:
-34.90
Explanation:
by enclosed to 20 ml metal cylinder was filled with glass increased by 40 and divided to 2 equal 30 then add the theoragly formula .90
What is the organism with modified genome called
Answer:(GMO)
Explanation: genetically modified organism (GMO)
SOMEONE PLEASE HELP ME WILL MARK BRAINLIEST PLEASE!!
O₂ required = 1/2 x 7.8 = 3.9 moles
Each of the items pictured represents a different
chemical reaction. Rank these four reactions in
order from fastest to slowest
1, 3, 2,4
4, 3, 1.2
3, 1. 4. 2
3, 2, 4, 1
1. Egg cooking
2. Metal rusting
DONE
3. Wood busing
4. Cement hardening
Answer: C. 3, 1, 4, 2
Explanation:
Got It Right On Edge
Answer:
C
Explanation:
A weather balloon holds 2,600 cubic meters of helium. The density of helium is 0. 1755 kilograms per cubic meter. How many kilograms of helium does the balloon contain? Please round your answer to the nearest whole number. Only enter a numerical value in the answer blank.
Answer:
for those whos question asked them to round to the nearest whole number the answer is 456
Explanation:
The weather balloon contains 456.3 kilograms of helium.
How are the density, volume and mass of a substance related?Suppose that a finite amount of substance is there having its properties as:
mass of substance = m kg
density of substance = d kg/m³
volume of that substance = v m³
Then, they are related as:
[tex]Density = \frac{mass}{volume}[/tex]
For the given case, we are given that:
Volume of balloon = volume of helium it contains = 2600 m³ = m
Density of helium it contains = 0.1755 kg/m³ = d
Let its mass be m, then:
Density of helium it contains = 2600 × 0.1755
= 456.3.
Hence, the weather balloon contains 456.3 kilograms of helium.
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Describe
the kinetic-potential energy
conversions that occur when
a basketball bounces
At the moment the ball hits the ground, its kinetic energy is greatest and its potential energy is zero.
How many solutions does the equation (―3)(+ 1)(+ 5) = 0 have? What are the solutions?
Answer:
- 15 = 0
Explanation:
==> (―3)(+ 1)(+ 5) = 0
==> -3 × +1 × +5 = 0
==> -3×+5=0
==> -15=0
A chemist wants to observe the following reaction
2H2+O2->2H2O
The chemist is standing inside a room with oxygen in the air and has a balloon filled with hydrogen. The chemist holds a small flame up to the hydrogen balloon when the balloon pops the hydrogen explodes in a ball of fire.
based on what you know about breaking and forming bonds, explain which part of the reaction is higher and energy. defend your answer in 3 to 5 sentences
The part of the process that requires greater energy is the breaking of bonds between oxygen and hydrogen atoms
What is a chemical reaction?A chemical reaction is said to occur when the chemical bonds in substances break and new bonds are formed. Hence, a chemical reaction involves the breaking and forming of bonds.
We can see that the part of the process that requires greater energy is the breaking of bonds between oxygen and hydrogen atoms because energy in the form of heat had to be supplied for that to happen.
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Answer:
This reaction is a chemical reaction because it involves the forming and breaking of bonds. The part of the reaction that is higher in energy is breaking the bond between oxygen and hydrogen atoms. This is because energy is supplied being in the form of heat which requires more energy.
Explanation:
guys i have a earth science test in the morning and i don’t understand anything from the whole unit
what do i do?
The study of earth science is very easy to understand. It is very possible to get confused when studying for a test. The right thing to do is to be calm, meet someone who can put you through in areas you don't understand and also take you time in using different methods of comphenesion.
What is Earth science?Earth science is known to be the study of the structure or the form of the Earth along with its properties and its processes. Knowing this will help you known more about maintenance of life on our planet.
Most times when people have test, they often have tension and other kinds of things that tends to make them not to focus on their studies. But you don't have to worry. Be calm, ask a much older and learned person for help in areas you do not understand and read it over again.
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what describes the process by which gas goes directly to a solid phase
A sublimation
b solidification
c vaporization
d deposition
Deposition is when a gas transitions directly to the solid phase without passing through the liquid phase D) Deposition.
During deposition, the gas molecules lose energy and come together to form a solid substance. This process is the reverse of sublimation, where a solid directly transitions to the gas phase without becoming a liquid.
Deposition refers to the process in which a substance changes directly from a gaseous state to a solid state without passing through the intermediate liquid phase. It is the reverse process of sublimation, where a solid transforms instantly into a gas.
During deposition, the gas molecules lose energy and come together to form a solid structure. This can occur when the temperature and pressure conditions favor the gas to bypass the liquid phase and directly convert it into a solid.
Examples of deposition can be seen in various natural phenomena, such as frost forming on a cold surface or the formation of snowflakes from water vapor in the atmosphere. In these cases, the water vapor bypasses the liquid phase and directly transforms into solid ice crystals through deposition. Therefore, the correct answer is D) Deposition.
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What is the most abundant greenhouse gas in the atmosphere?.
Answer:
Water vapor is the most abundant greenhouse gas in the atmosphere.
Two elements are found together in a substance. They are not chemically combined. Is this substance an element, a mixture or a compound?
According to the information provided, which of the following
correctly lists the total number of neutrons and protons
emitted during alpha decay?
A. 4
B. 2
C. 1
D. 0
what happens when glycerol is added to water?
a. water evaporates more easily
b. water viscosity decreases
c. boiling point of the mixture exceed 100°C
d. freezing point of the mixture drops below 0°C
Answer:
The answer is going to be D
8) Hospitals buy 400 L cylinders of oxygen gas compressed at 150 atm pressure. They need to
administer oxygen to patients at 3.0 atm. What volume (V2) of oxygen can a cylinder supply at this lower
pressure?
Answer:
the answer will be 20,000 L
Copper(ii) chloride reacts with sodium nitrate to produce copper(ii) nitrate and sodium chloride.
Answer:
CuCl2 + 2NaNO3 - > Cu(NO3)2 + 2NaCl
Which word equation shows hydrogen reacting with oxygen to form water?
CORO
oxygen + water hydrogen
hydrogen + oxygen - Water
oxygen + water hydrogen + water
hydrogen + water - Oxygen
Mark this and retum
Save and Exit
Next
Submit
Answer:
O2+H2 → H2O
become→zero to−2
∵ it will be reduced and oxidation state of H
2
becomes zero to +1 it will be oxidised.
∴ reaction will be redox
Explanation:
please mark me as brainalist
The pOH of a solution is 3.45. What is the OH⁻ concentration in the solution?
The concentration of the hydroxide ion [OH¯] in the solution having a pOH of 3.45 is 3.55×10¯⁴ M
What is pOH?The pOH of a solution simply defines the concentration of the hydroxide ion [OH¯] in the solution. It can be expressed mathematically as
pOH = –Log [OH¯]
How to determine the value of [OH¯]From the question given above, the following data were obtained:
pOH = 3.45concentration of hydroxide ion [OH¯] =?pOH = –Log [OH¯]
3.45 = –Log [OH¯]
Multiply through by –1
–3.45 = Log [OH¯]
Take the anti-log of –3.45
[OH¯] = anti-log of (–3.45)
[OH¯] = 3.55×10¯⁴ M
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Is it possible that the room gets warmer due to our body heat?.
Answer:
no because humans turn their extra body heat into sweat instead of dissipate heat through evaporation in the air.
Explanation:
hope this helps!
Devise a 6‑step synthesis of the starting material from the product. The cyclopentene is a key intermediate.
Cyclopentene is industrially produced in large quantities. It is used as a monomer for the synthesis of plastics, in addition to other chemical syntheses.
The 6‑step synthesis of the starting material from the productReaction 1 - Preparation of keto-aldehyde
Reaction 2 - Preparation of cyclopentene carbaldehyde
Reaction 3 -Preparation of α,β-epoxy-carbaldehyde cyclopentane
Reaction 4 - Preparation of cyclopentene alcohol
Reaction 5 -Preparation of α,β-epoxy-cyclopentane alcohol
Reaction 6 -Preparation of α,β-epoxy-carbaldehyde cyclopentane
With this information we can conclude that cyclopentene is used as a monomer for the synthesis of plastics.
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a reaction requires 2.5 moles of zinc oxide. how many grams would this equate to?
Answer: 45.038
Explanation: 2.016 H (2*1.008) + 15.999 O (1*15.999)
One mole of Zn weighs about 65.4 grams. Therefore, the mass equivalent to 2.5 moles is number of moles times the atomic mass that is 163.5 here.
What is one mole ?Any substance containing 6.022 × 10²³ atoms is called one mole of that substance. This number is called Avogadro number. Thus one mole of any element contains Avogadro number of atoms.
The mass of one mole of the element is called its atomic mass. Similarly the mass of one mole of a compound is called its molar mass. Zinc is a transition metal.
Atomic mass of Zn = 65.1 g
thus, mass of 2.5 mole of Zn = 65.1 × 2.5 = 163.5 g.
Therefore, the mass of 2.5 moles of Zn is 163.5 g
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PLS HELP!!!
Determine which of the following properties are physical properties and which are chemical properties. Explain why you categorized each property as either physical or chemical.
Answer:
Physical: Conducts Electricity, Magnetic, Malleable and ductile
Chemical: Rusting, reacts with acid
Explanation:
The reason, why I categorized the listed items as "Physical" was because there is no major change, no matter if it is magnetic, malleable, etc. The item is still in its original form.
Whilst the reasons I put rusting, and reacting with acid as chemical, is because when an item rusts, you can no longer change it back to its original state, and when you an item reacts with the acid, at times (depending on the metal, it will create or form compunds)
A sample of propane, C3H8, occupies 1.73 mL when the pressure is 320 torr at 30 C. What is the volume at STP
The volume of the sample of propane at STP is 0.62 mL.
What is volume?Volume is the amount of space that a substance or object occupies.
To calculate the volume of gas at STP, we apply the formula below.
Formula:
PV/T = P'V'/T'................. Equation 1Where:
P = Initial pressure of gasV = Initial volume of gasT = Initial temperature of gasP' = Standard pressure (SP)T' = Standard temperature (ST)V' = Volume of gas at STP.Make V' The subject of the equation
V' = PVT'/P'T.............. Equation 2From the question,
Given:
P = 320 torrV = 1.73 mLT = 30 °C = (30+273) K = 303 KP' = 760 torrT' = 273 KSubstitute these values into equation 2
V' = (320×1.73×273)/(760×303)V' = 0.62 mLHence, the volume of the sample of propane at STP is 0.62 mL.
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What is the atomic mass of an oxygen isotope that has 8 protons and 10 neutrons in its nucleus? 8 amu 10 amu 18 amu not enough information to calculate.
The atomic mass can be defined as the mass of neutrons and protons in the atom. The atomic mass of the oxygen isotope is 18 amu.
What is an atom?An atom is the smallest particle comprised of three subatomic units, namely electrons, protons, and neutrons.
The number of electrons in the atoms determines the atomic number, while the number of protons and neutrons determines the atomic mass.
The atomic mass can be given as:
[tex]\rm Atomic\;mass=Neutrons+Protons[/tex]
The oxygen isotope has been comprised of 10 neutrons and 8 protons. The atomic mass of the isotope is given as:
[tex]\rm Atomic \;mass=10+8\;amu\\Atomic\;mass=18\;amu[/tex]
The atomic mass of the oxygen isotope is 18 amu. Thus, option C is correct.
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Answer:
18 amu
Explanation:
atomic mass = #protons + #neutrons = 8 + 10 = 18 am
Why is cycling carbon important
It's important for a few reasons actually
here you go have a nice day
. Carbon is an essential element for all life, so understanding how it moves helps us to understand biological processes and factors that influence them.
. One form carbon take's is the greenhouse gas carbon dioxide, CO2. Increased levels of carbon dioxide insulate the Earth, causing temperatures to rise. Understanding how carbon dioxide is absorbed and released helps us understand the climate and predict global warming.
. Carbon is not in balance, so it's important to learn where it is being stored and released. The rate at which carbon is deposited into living organisms is not the same as the rate it is returned to the Earth. There is about 100x more carbon in living matter than in the Earth. Burning fossil fuels releases massive amounts of carbon into the atmosphere and to the Earth.
. The carbon cycle is tied to the availability of other elements and compounds. For example, the carbon cycle is tied to the availability of oxygen in the atmosphere. During photosynthesis, plants take carbon dioxide from the air and used it to make glucose (stored carbon), while releasing oxygen.
One gram of sugar provides 4. 0 calories. How many calories you will get by drinking
one can (330 ml) of cola?
1320 calories will be got by drinking one can (330 ml) of cola.
HOW TO CALCULATE CALORIES?Calories refers to the unit of measurement of energy consumed in food.
According to this question, one gram of sugar provides 4.0 calories of energy.
1g of a liquid substance equals 1mL. Therefore, 330mL of cola will equal (330 × 4) = 1320 calories of energy.
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