Answer:
because no chemical change is happening
Explanation:
Car and Motorcycle engines are controlled by what chemical reaction?
Car and Motorcycle engines are controlled by a chemical reaction which is controlled by gasoline and oxygen.
What is a Chemical reaction?A chemical reaction may be defined as a process that significantly involves the chemical transformation of one set of chemical substances to another. This process involves the utilization of substances known as reactants that are transformed into other substances known as products.
The fuel in cars and motorcycles delivers the source of energy to them in order to move from one place to another. This fuel significantly contains gasoline which reacts with atmospheric oxygen and results in a small explosion which derives some sort of energy that is finally consumed by the vehicle's engine.
Apart from this, the combustion of fuel is also facilitated in the presence of oxygen which liberates extremely high amounts of carbon dioxide in the atmosphere. This reaction has also occurred in the engines of vehicles.
Therefore, car and Motorcycle engines are controlled by a chemical reaction which is controlled by gasoline and oxygen.
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Help, please, I really need it.
Answer:
CO(g) + H2O(g) ⇌ CO2(g) + H2(g)
The reaction below will occur in a gaseous system at STP:
6 NO (g) + 4 NH3 (g) —> 5 N2 (g) + 6 H20 (g)
What volume of nitrogen gas will be produced from 15.0 L of nitrogen monoxide gas?
12.5 L
18.0L
15.0 L
22.5 L
Answer:
V = 12.5 L
Explanation:
Given data:
Volume of NO = 15.0 L
Temperature and pressure = standard
Volume of nitrogen gas produced = ?
Solution:
Chemical equation:
6NO + 4NH₃ → 5N₂ + 6 H₂O
Number of moles of NO:
PV = nRT
n = PV/RT
n = 1 atm × 15.0 L / 0.0821 atm.L /mol.K × 273.15 K
n = 15.0 atm.L / 22.43 atm.L /mol
n = 0.67 mol
now we will compare the moles of No and nitrogen gas.
NO : N₂
6 : 5
0.67 : 5/6×0.67 = 0.56
Volume of nitrogen gas:
PV = nRT
1 atm × V = 0.56 mol × 0.0821 atm.L /mol.K × 273.15 K
V = 12.5 atm.L / 1 atm
V = 12.5 L
The diagram shows a homemade car being pushed with a force of 25 N. The force causes the car to move at a constant speed of 3 m/s2. What will happen if the force is changed to 35 N?
Answer:
The acceleration of the car will increase drastically
Explanation:
Based on newtons second law of motion, the force applied on a body is directly proportional to the product of its mass and acceleration;
Force = mass x acceleration
Since the mass of the car is constant, an increase in force will cause an increase in acceleration.
A decrease in the force will impact a lesser acceleration on the motor car.
This way, the change in velocity of the body per unit of time will increase drastically.
Can someone help?? This is really hard.
Answer:
See Explanation
Explanation:
Let us consider the first two reactions, the initial concentration of CO was held constant and the concentration of Hbn was doubled.
2.68 * 10^-3/1.34 * 10^-3 = 6.24 * 10^-4/3.12 * 10^-4
2^1 = 2^1
The rate of reaction is first order with respect to Hbn
Let us consider the third and fourth reactions. The concentration of Hbn is held constant and that of CO was tripled.
1.5 * 10^-3/5 * 10^-4 = 1.872 * 10^-3/6.24 * 10^-4
3^1 = 3^1
The reaction is also first order with respect to CO
b) The overall order of reaction is 1 + 1=2
c) The rate equation is;
Rate = k [CO] [Hbn]
d) 3.12 * 10^-4 = k [5 * 10^-4] [1.34 * 10^-3]
k = 3.12 * 10^-4 /[5 * 10^-4] [1.34 * 10^-3]
k = 3.12 * 10^-4/6.7 * 10^-7
k = 4.7 * 10^2 mmol-1 L s-1
e) The reaction occurs in one step because;
1) The rate law agrees with the experimental data.
2) The sum of the order of reaction of each specie in the rate law gives the overall order of reaction.
Which of the following measurements are required to find the work done on an object?
1. The mass and volume of the object
2. The volume of the object and the distance the object moved
3. The force exerted on the object and the distance the object moved
4. The force exerted on the object and the time it took to move the object
Answer:
1.p=mV................
Chemistry Conversion: Convert 3.0099 dumps to wigs. 6375.23 dumps = 1 wig Round your answer to 5 sig figs. dumps and wigs is not a real unit just used for example.
Answer:
There are 0.00047212 wig in 3.0099 dumps.
Explanation:
In this problem, we need to convert 3.0099 dumps to wigs.
6375.23 dumps = 1 wig (given)
1 dump = (1/6375.23) wig
To convert 3.0099 dumps to wigs, multiply 3.0099 by (1/6375.23).
3.0099 dumps = [tex]\dfrac{1}{6375.23}\cdot3.0099[/tex]
= 0.00047 wig
Hence, there are 0.00047212 wig in 3.0099 dumps.
The current model of the atom suggests that ?
Answer:
i dont see the model bro
Explanation:
Answer:
The current model of the atom shows an atom that is mostly empty space. In the center is a small nucleus made of protons and neutrons.
Explanation:
What is an advantage of using natural gas rather than a coal burning power plant?
Answer:
I hope it helps u
Explanation:
The advantages of using natural gas rather than coal are the following,
Natural gas is present in large amount than coal.Natural gas is less costly than other fossil fuel sources of energy. It increases security by decreasing dependence.Natural gas is more environmentally friendly.Natural gas is much safer to store.It is reliable.Natural gas is a fossil fuel, though the global warming emissions from its combustion are much lower than those from coal or oil.Natural gas emits 50 to 60 percent less carbon dioxide (CO2) when combusted in a new, efficient natural gas-power plant compared with emissions from a typical new coal plant.What is the mass of 6.25 moles of Ca(OH)2?
please help!!!
Decide which molecules in the simulation will represent the substances from the actual reaction. Include a strategy to deal with the difference in structure between the actual reaction N2 + 3H2 ⇌ 2NH3 and the simulated reaction. Not all molecules need to be used.
Answer:
I FINNALY GOT MY HANDS ON THE AWNSER, dont
copy word for word though Explanation:
Simulation of a reaction is a chemical reaction modeling or demonstration tool, using various software to better understand the molecular structure and the physical and chemical properties of the molecule. Here the actual reaction is N2 + 3H2 -----> 2NH3. In the simulation reactions, the nitrogen and hydrogen molecules in the actual reaction are described by different colored circles or dots and the bonds are produced using a single, double or triple line that touches each molecule and gives an appearance like the reactants and the products' ball and stick model. Example: Molecule of nitrogen as o---triple line---o. A molecule of hydrogen as O———O. Chemical symbols such as N and H are expressed in Actual Chemical Reaction, N2 and H2 and the bonds are represented by single, double or triple lines that do not impact the atoms in the molecule as follows: Nitrogen Molecule: N -triple Bond- N. Hydrogen Molecule: H - H.
equation invalid?
Al +202
→ A1203
O A. An atom of aluminum (Al) is created in the reaction.
B. An atom of oxygen (O) is destroyed in the reaction.
O C. The equation violates the Law of Conservation of Mass.
O D. All of the above.
1 View Gizmo
Answer:
B. an atom of oxygen o is destroyed in the reaction
What is the number of electronsin hydrogen
Answer:
There's only one electron in hydrogen.
Answer:
Hydrogen contain 1 electron
Explanation:
An atom of sodium can transfer its one valence electron to an atom of
O magnesium to complete the octet rule
O fluorine to complete the octet rule
O nitrogen to complete the octet rule
O calcium to complete the octet rule
Answer: O fluorine to complete the octet rule
that right
how to find the number of atoms present in 22g of co2
Answer:
22g of 2
C
O
2
have 3.011×1023
3.011
×
10
23
2
C
O
2
molecules.
Explanation:
Hope this helps! ^^
Look at the questions labelled A, B, C, D. A How many substances are there in drinking water? B How much fluoride is in drinking water? C Is fluoride soluble in drinking water? D Should fluoride be added to drinking water? Which one of the questions cannot be answered by science alone? Tick one box.
Answer:
Magnesium, calcium and sodium.
Explanation:
Magnesium, calcium, sodium, and other beneficial minerals are the substances present in drinking water. Different regions have different fluoride concentration in their water such as in sea water, fluoride level is 1.1 mg/L while in surface water, the concentration is 0.01–0.3 ppm. Yes, fluoride is soluble in water. No, fluoride should not be added to drinking water because it harm for health. All the questions can be answered by science because it is related to chemistry.
Metals in general have:
a. High electrical conductivity
b. High thermal conductivity
c. High density
d. All of the above
Answer:
d. All of the above
Explanation:
If the quantity of heat lost or gained is ( ΔH = mass X change in T X specific heat) mass change in T specific heat, what is the amount of heat required to raise 200.0 g of water from 22.00°C to 100.0°C?
Specific heat of water is 4.180 J/g °C
8. When rubidium and fluorine combine to produce the compound RbF, che ions
formed have the same electron configuration as atoms of
a neon, only
b both argon and neon
c both krypton and neon
d both xenon and neon
Answer:
The answer is C, both krypton and neon.
Explanation:
I got the answer wrong and my teacher told me that c is the right answer choice
Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore, the correct option is option C.
What is Ions?Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.
Cation is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state.
Rb react as cation Rb ⁺ with electron distribution as [Kr] after removal of 1 electron from s orbital. F react as anion F⁻ with electron distribution [He] 2s² 2p⁶ which is equal to electronic configuration of neon.
Therefore, the correct option is option C.
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Is BaOH2 soluble or insoluble in water?
Answer:
Explanation:
Tough question.
The answer is very dependent on the temperature of the water. At 0o C, less than 5 grams is soluble in water.
The curve increases as the temperature increases. At 80oC about 35 grams is soluble in water 100 mL of water. So Ba(OH)2 is very soluble at higher temperatures.
Maybe the question can be resolved just a little better at room temperature. The solubility is still less than 5 grams / 100 mL. That makes it slightly soluble or more soluble than other things.
So to answer the question, you need to specify the temperature. I would say it is, but be prepared to defend your answer.
In your own words, explain why we have seasons on Earth. Why do some places have all 4 seasons and others seem to only have 1 or 2?
If you have a 17% salt solution, how much salt will need to be added to 71 mL of water?
Salt added : 14.5 g
Further explanationGiven
17% salt solution
71 ml water
Required
salt needed
Solution
%mass = (mass solute : mass solution) x 100%
71 ml water = 71 g water(density = 1 g/ml)
mass solute = x
[tex]\tt 17\%=\dfrac{x}{x+71}\times 100\%\\\\0.17(x+71)=x\\\\0.17x+12.07=x\\\\0.83x=12.07\\\\x=14.5[/tex]
During ionic bonding, there is a transfer of electrons...
O from one metallic element to a different metallic element
O from one nonmetallic element to a different nonmetallic element
O from one metallic element to a different metalloid
O from one metallic element to a different nonmetallic element
Answer:
from one metallic element to a different nonmetallic element
Explanation:
For example NaCl is ionic compound in which Na metal donate electron to Cl non metal
Students are discussing the pros and cons of petroleum as a naturals resource. Which of the following do you agree with?
Answer:
this is a multiple choice question where are the answers
Explanation:
what happen when Nacl solution reacts with AgNo3solution .name the two types of reactions to which does it belong
Explanation:
A chemical reaction where two chemical compounds exchange ions with each other is called a double displacement reaction.
Also, when an insoluble salt is formed due to chemical reaction between two chemical compounds is called a precipitation reaction.
For example, [tex]NaCl(aq) + AgNO_3(aq) \rightarrow NaNO_3(aq) + AgCl(s)[/tex]
Here, ions are exchanged between the compounds [tex]NaCl[/tex] and [tex]AgNO_3[/tex] . Also, [tex]AgCl[/tex] is the precipitate formed.
urgent plzz help meeee thx
Answer:
8
Explanation:
From the question given above, the following data were obtained:
t–butyl ion = (CH₃)₃C⁺
Number of valence electron =?
The valence electron(s) talks about the combining power of an element or compound as the case may be.
Considering the t–butyl ion, (CH₃)₃C⁺ we can see that it has a charge of +1 indicating that it has given out 1 electron to attain the stable octet configuration which has a valence electrons of 8. Thus, the valence electron of t–butyl ion, (CH₃)₃C⁺ is 8
A coiled spring with coils that are closely spaced then widely then closely then widely then closely, ending with a yellow line labeled 1 second. What is the frequency of this wave?
Answer:
The frequency of the wave is 2Hz.
Explanation:
The frequency of a wave is the number of waves that pass a fixed point in a given amount of time. It can be measured by counting the number of crests that pass the point in a given time period. The higher the number is, the greater is the frequency of the wave.
So, by counting the number of times the coils in the spring are widely spaced, which is 2 times in 1 second, we get the frequency of the wave.
Answer:
The answer is 2.
Explanation:
Hope this helps ;)
As an electron in an atom moves from a higher energy state to a lower energy state, the atom
1 becomes a negative ion
2 becomes a positive ion
3 releases energy
4 absorbs energy
Answer:
3 releases energy
Explanation:
An electron in an energy level has a definite amount of energy associated with it at that level.
Electrons can undergo transitions from one level to another. However, when the electron changes its state, it must absorb or emit the exact amount of energy which will bring it from the initial to the final state.
When the electron is excited, it moves from the ground state to an excited state, it must absorb energy. On returning from an excited state to a lower level or the ground state, energy is emitted, giving rise to a line in the spectrum.
Answer: 3 because it releases energy
what pair of elements will react more violently
a chlorine and lithium
b chlorine amd potassium
c iodine and lithium
d iodine and potassium
Answer:
chlorine and potassium
Explanation:
Answer:
Chlorine and potassium
When examining features on the ocean floor, like a volcano, how would it appear?
severely eroded
only somewhat eroded
not eroded at all
barely eroded compared to land volcanoes
Answer:
barely eroded compared to land volcanoes
Explanation:
the other person is wrong