Explanation:
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Phần lớn axit nitric được sản xuất ra được dùng
Answer:
english
Explanation:
English English English English English English English English
The Flow of Energy in the Water Cycle
Energy flows through the Earth's system in the water cycle in two ways-when water
changes state and when water moves from place to place. When water changes state, I
water molecules absorb energy from or release energy to their surroundings. For
example, water can evaporate when it absorbs energy from sunlight or from surrounding
air, water, or land. When water condenses to form clouds, the water molecules release
energy to the surrounding atmosphere.
As water moves, it transfers energy from one location to another. For example, as
a warm surface current in the ocean flows to a colder polar region, thermal energy from
the equator is transported toward Earth's poles. When the warm water reaches areas
where the air is colder, some energy in the warmer water is released into the cooler air.
These energy transfers between the ocean and the atmosphere greatly influence Earth's
weather and climate.
current
27. Imagine snow on top of a mountain. What are some ways energy could be
transferred as the seasons change? Choose all answers that apply.
A. Energy flows into the snow from sunlight.
B. Cold snow melt flows into the warmer lake.
C. Warmer air absorbs energy from snow.
D. Energy flows into the snow from warmer air.
Solid magnesium reacts with aqueous copper(I) chloride to form aqueous magnesium chloride and solid copper. Write a balanced chemical equation for each chemical reaction.
Answer:
Explanation:
Mg(s) +2CuCl (aq) -> MgCl2(aq) + 2Cu(s)
Mg(s) +2CuCl (aq) → MgCl[tex]_2[/tex](aq) + 2Cu(s) is the balanced chemical equation for each chemical reaction.
What is balanced chemical equation?An equation for just a chemical reaction is said to be balanced if both the reactants as well as the products have the same number of atoms and total charge for each component of the reaction. In other words, both sides of a reaction have an equal balance of mass and charge.
The ingredients and outcomes of a chemical reaction are listed in an imbalanced chemical equation, but the amounts necessary to meet the conservation of mass are not specified. Mg(s) +2CuCl (aq) → MgCl[tex]_2[/tex](aq) + 2Cu(s) is the balanced chemical equation for each chemical reaction.
Therefore, Mg(s) +2CuCl (aq) → MgCl[tex]_2[/tex](aq) + 2Cu(s) is the balanced chemical equation for each chemical reaction.
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A golfer uses a club to hit a golf ball that is sitting on a tee. The golf ball goes flying through the air. Which of the following statements describes the force or forces that transfer momentum between the club and ball? A. The club and the ball exert equal forces in the direction of the ball's motion. B. The club exerts a greater force on the ball than the ball exerts on the club C. The club exerts a forward force on the ball, and the ball exerts an equal backward force on the club D. The club exerts a forward force on the ball, but the ball does not exert a force on the club.
2ZnSO4
Is that name of element # of atoms? Total of atoms? The #4 is a (coefficient or subscript?
Describing Chemical Reactions
Quiz Active
1
2
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TIME REMAINING
57:48
Liquid 1 reacts with Liquid 2, producing a solid and a gas. Using this scenario, which supports the law of conservation
of mass?
EEEE
O mass of Liquid 1 + mass of solid = mass of Liquid 2 + mass of gas
O mass of Liquid 1 - mass of solid = mass of Liquid 2-mass of gas
O mass of Liquid 1 - mass of Liquid 2 = mass of solid + mass of gas
O mass of Liquid 1 + mass of Liquid 2 = mass of solid + mass of gas
Answer:
mass of Liquid 1 + mass of Liquid 2 = mass of solid + mass of gas
Explanation:
iquid 1 reacts with Liquid 2, producing a solid and a gas. Using this scenario, which supports the law of conservation
of mass?
EEEE
O mass of Liquid 1 + mass of solid = mass of Liquid 2 + mass of gas
O mass of Liquid 1 - mass of solid = mass of Liquid 2-mass of gas
O mass of Liquid 1 - mass of Liquid 2 = mass of solid + mass of gas
O
based on the law of the conservation of matter, the sum of the masses of the reactants must equal the sum of the masses of the products
so the correct answer is
mass of Liquid 1 + mass of Liquid 2 = mass of solid + mass of gas
g What is the minimum speed needed by a ground-state hydrogen atom for its kinetic energy to be enough to ionize the atom in a collision
Let u be velocity of hydrogen atom before collision and V the ve locity of two atoms moving together after collision By principal of conservation of momentum , we have
[tex]Mu + M \times 0 = 2VM[/tex]
[tex]V = \frac{u}{2} \\ [/tex]
The loss in kinetic energy Δϵ due to collision is
[tex]Δϵ= \frac{1}{2}Mu {}^{2} − \frac{1}{2} (2M)V {}^{2} \\ [/tex]
[tex]As, V = \frac{u}{2} \: we \: have \: Δϵ= \frac{1}{2}Mu {}^{2} − \frac{1}{2} (2M)( \frac{u}{2}) {}^{2} \\ [/tex]
[tex] = \frac{1}{2} Mu {}^{2} - \frac{1}{4}Mu { }^{2} = \frac{1}{4} Mu {}^{2} \\ [/tex]
Rest answer is in the pic
The sun provides the ____ to power the water cycle
A: Heat energy
B: Chemical energy
C: direction
the answer is a
it carries down heat rays which evaporates the water.
Calcula el número de gramos de soluto en 500 mL de 0.169 M KOH
Answer:
no se, no se y no se
Explanation:listo
where is the answers?>???!!!!
Answer:
Explanation:
For what?
What next action can be done to save blue whales?
Answer:
donate money to a whale organization made to fight the problems
Explanation:
Please help!!!
i will mark brainliest
Answer:
Pressure: doubles
Volume: stays constant
Moles: doubles
Gas Constant: halves
Temperature: stays constant
Explanation:
hope this helps. . . <3
Do waves transmit matter?
Question 16 options:
No, waves do not interact with matter at all
Yes, all waves transmit matter
Yes, but only mechanical waves can transmit matter
No, waves are disturbances in matter but do not transmit matter
Answer:
No, waves are disturbances in matter but do not transmit matter
Explanation: I took the test
The charge on the iron ion in the salt Fe2O3 is....?
Answer = 0
Explanation:
The sum of the charges of atoms of elements in a neutral compound is zero
Hence the charge of iron in the compound is 0
The charge on the iron ion in the salt Fe₂O₃ is + 3 as the charge on overall compound is 0.
What are ions?An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.
Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.
The charge on the iron ion in the salt Fe₂O₃ is calculated as 2×x+3(-2)=0 thus x= +3.
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Question 4 of 10
Which of the following is the correct model of C.H14?
o
A.
O
B.
O C.
D.
Answer:
B
Explanation:
Option B is correct because you have 6 vertices, indicating that there ate 6 carbons in the compound.
A bike tire at a pressure of 2.4 atm and a
temperature of 290 K has a volume of 2.2 liters.
A child gets on the bike and rides it outside.
What is the new pressure if the temperature
outside is 296 K and his weight causes the tire's
volume to drop to 2.0 liters? please help!!!
Answer:
5.4 atm
Explanation:
P•V/T = P'•V'/T'
2.4•2.2/290 = P'•2/296
5.28/290 = P'/296 Multiply both sides by 296
1562.88/290 = P'
I'm = 5.4 atm
Q
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51) Which statement BEST explains why Liquids and gases can flow but solids cannot?
A) Liquids and gases usually occupy a larger volume than the solid form of a substance.
B) The structure of liquids and gases is not fixed, so particles can slide past each other.
Solid particles are often larger than liquid and gas ones, so they can't move as easily.
D) Liquid and gas particles are more attracted to each other and "pull" the other particles.
Answer is:
The structure of liquids and gases is not fixed, so particles can slide past each other.
When sulfur dioxide forms from two non-metals, a covalent bond results when the electrons are
Answer:
heres your answer
To determine whether a bond is Covalent or Ionic, you must know the difference in electronegativity (a fancy word for describing how good a job a particular element does at attracting new electrons).
Explanation:
can anyone heelp me plzzz
Answer: 1
Explanation: C= 1 if you round 1.04 to a single digit the answer is 1
Using the photo, solve the world scramble to answer the question: What happens to Ice as it heats up? T I G A C N S E H E A S T T
Answer:
hi
Explanation:
hi
Answer:
When heat (a form of energy) is added, the ice melts into liquid water. It has reached its melting point – 0°C. Continue to apply heat, and the water will turn into water vapour, which is water in its gaseous state.
When ice is heated, it will melt into the liquid state of water. This change is called melting. Melting of ice is a reversible change as we can again obtain ice by freezing the melted water.
How do you explain the relationship between brightness and concentration of salt?
The relationship between brightness and salt concentration is a direct
relationship.
Brightness and salt concentration having a direct relationship means that as
the salt concentration increases, the brightness increases and vice versa.
This system contains two electrodes and salt water which serves as the
electrolytes.
The salt water which contains sodium and chlorine ions flow between both
ends thereby generating the electricity in the system.
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how many moles of chloroethylene contain 5.47 x 10 26 molecules
Answer:
so each mole is 6.022 * 10^23
so subtract and we have 5.47 * 10^3
1000*5.47
5470/6.022
908.315 moles
908moles in sig figures
What is the mass of 4.2 moles of carbon?
Answer:12.01
Explanation:
0.10 moles of sodium sulfate is dissolved into 12 mL of solution. What is the molar concentration of the solution
Answer:
gg go next
Explanation:
A marine fossil found in a desert indicates that the area had once been water. I have to type this answer
Answer:
whats the question
Explanation:
In boron monofluoride, how many total bonds would boron need to make with the fluorine in order to achieve an octet, while also allowing fluorine to achieve an octet
In boron monofluoride, boron will need 5 bonds to attain octet rule while fluorine will require 1 bond to attain octet rule.
The valency electron of an atom determines the kind of bonding that occurs between atom of elements.
Therefore,
The bonding between Boron and fluorine to form boron monofluoride are as follows:
An electronically neutral boron atom has 5 electrons. Using electronic configuration, the outer electrons are 3 (Using the model 2 8 8 2). It will require 5 electrons to attain the octet rule.
On the other hand an electronically neutral fluorine atom has 9 electrons. The outer electrons are 7 electrons. Naturally, it will require 1 electron to attain octet rule.
In the case of boron monofluoride, 1 atom of boron combines with 1 atom of fluorine to form the compound. Therefore, the total valency electrons of the diatomic compound is 10 electrons altogether.
Generally, In boron monofluoride, boron will need 5 bonds to attain octet rule while fluorine will require 1 bond to attain octet rule.
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Boron needs four bonds in order to satisfy the octet rule while fluorine needs only one bond in order to satisfy the octet rule.
Boron is an element in group 13 of the periodic table. This means that boron has three valance electrons. The octet rule states that an atom must have eight valence electrons in order to attain stability.
This implies that boron must have a total of four bonds in order to satisfy the octet rule. On the other hand, fluorine which has seven valence electrons only needs one bond in order to satisfy the octet rule.
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Under certain conditions, H_{2}O_{2} can act as an oxidizing agent; under other conditions, as a reducing agent. A good theoretical explanation for this is that an atom within a compound can become more stable by either gaining OR losing electrons. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a True b False
Answer:
True
Explanation:
Not sure why but it's true.
The theoretical explanation given for the reason why H₂O₂ can act as an oxidizing agent and other times as a reducing agent is; True
We are told that under certain conditions, H₂O₂ can act as an oxidizing agent and under other conditions it can act as a reducing agent.
Now, an oxidizing agent is one that gains electrons and undergoes reduction in a chemical reaction while a reducing agent is one that loses electrons and undergoes oxidation in a chemical reaction.Now, an atom that loses electrons within a compound would become more stable if the loss of electrons means its' new valence shell has 8 electrons.
Whereas, an atom that gains electrons within a compound would become more stable if the gain of electrons makes its' valence shell to fulfill the octet rule by having 8 electrons in its' outermost shell.
The oxygen atom in the given H₂O₂ (hydrogen peroxide), has an oxidation state of -1. Now, due to the fact that this -1 oxidation state lies between the more popular extremes of 0 and -2 oxygen oxidation states, it means that it can either act as an oxidizing agent or a reducing agent.In conclusion, the theoretical explanation is true.Read more at; https://brainly.com/question/15867111
4Na + O2 2Na2O
How many moles of Na2O will be produced from 4.35 x 10^24 atoms of Na?
with explanation
CH3-CH2-NH-CH2-CH3
What’s the name for this
Answer:
Ethylamine
Explanation:
Ethylamine also known as Ethanamine is an organic compound with the formula CH3CH2NH2.
I hope this is helpful!
God BLESS!
1.0 g of H_{2}O_{2} solution (30 wt%) was titrated with 29.29 mL of KMnO_{4} solution. What is the molarity of the KMnO_{4} solution
1.0 g of 30 wt% H₂O₂ is used to titrate 29.29 mL of 0.20 M KMnO₄ solution.
Let's consider the balanced equation for the reaction between H₂O₂ and KMnO₄.
2 KMnO₄ + 3 H₂O₂ → 3 O₂ + 2 MnO₂ + 2 KOH + 2 H₂O
1.0 g of H₂O₂ solution react. We can calculate the reacting moles of KMnO₄ considering that:
The concentration of H₂O₂ is 30 wt%.The molar mass of H₂O₂ is 34.01 g/mol.The molar ratio of H₂O₂ to KMnO₄ is 3:2.[tex]1.0gH_2O_2(Solution) \times \frac{30gH_2O_2}{100gH_2O_2(Solution)} \times \frac{1molH_2O_2}{34.01gH_2O_2} \times \frac{2molKMnO_4}{3molH_2O_2} = 0.0059molKMnO_4[/tex]
0.0059 moles of KMnO₄ are in 29.29 mL of solution. The molarity of KMnO₄ is:
[tex][KMnO_4] = \frac{0.0059mol}{0.02929 L} = 0.20 M[/tex]
1.0 g of 30 wt% H₂O₂ is used to titrate 29.29 mL of 0.20 M KMnO₄ solution.
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