Answer: Zero-emission vehicles have no tailpipe emissions, no emissions from gasoline, and no emission-control systems, which deteriorate over time.
Explanation:
Transport media acts as a significant pollution source by releasing gasses and particles. Therefore, automobile makers should adhere to quotas for zero-emission vehicles set by states even if this causes automakers to lose revenue
What are Zero-Emission vehicles?Cars, trucks, and buses mostly run on electricity. Now, the pollution caused by these vehicles is largely reduced compared with ordinary vehicles due to the reduction in fuel use which results in a reduction in gasses and other substances emissions.
There are three kinds of zero-emission vehicles Hybrids vehicles, Fully electric vehicles, and Hydrogen cells. Currently, transport media are the most significant sources of gasses and other polluting components emissions that lead to an enhancement in the greenhouse effect and global warming.
All primary pollutants in the air can produce secondary pollutants. The pollutants could be considerably reduced by substituting transport media or modifying the combustion processes.
A significant reduction in pollutants from Zero-Emission Vehicles has been proven in many countries.
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A 7.50g mass of compound A was added to 35.0g of water and it is found that the freezing point has decreased by 3.14°C. What is the molar mass of A?
This problem is providing us with the mass of an unknown compound, the mass of water it was added in and the change (decrease) in the freezing point the solution exhibited. Thus, the problem requires the molar mass of the compound, and at the end, the result turns out to be 126.7 g/mol, according to:
Freezing point depression:In chemistry, colligative properties are used to understand how the properties of a solvent change as a solute is added, forming a solution. In this case, we can use the following formula, since the solute decreased water's freezing point:
[tex]\Delta T_m=-m*Kf[/tex]
Where the molality is the first variable for us to calculate given the other two:
[tex]m=\frac{-3.14\°C}{-1.86\°C/m} =1.69m[/tex]
Thus, since this molality is in moles of solute per kilograms of solvent (water), one can find the former by multiplying the 35.0 g of water, but in kilograms:
[tex]n=\frac{1.69mol}{kg} *35.0g*\frac{1kg}{1000g} =0.0591mol[/tex]
Finally, we compute the molar mass as required:
[tex]M=\frac{7.50g}{0.0591mol}\\ \\M=126.9g/mol[/tex]
As we assumed this solute is nonionizing.
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Acetic acid (CH3COOH) reacts with water to form the acetate ion and the hydronium ion: Upper C upper H subscript c upper C upper O upper o upper H (a q) plus upper H subscript 2 upper o (l) double arrow upper C upper H subscript 3 upper C upper o upper O superscript minus (a q) plus upper H subscript 3 upper o superscript plus (a q). At equilibrium, the concentration of CH3COOH is 2. 0 × 10–1 M, the concentration of CH3COO– is 1. 9 × 10–3 M, and the concentration of H3O is 1. 9 × 10–3 M. What is the value of Keq for this reaction? 1. 8 × 10–5 5. 5 × 104 9. 5 × 10–3 1. 1 × 102.
The value of Keq for this reaction is [tex]\bold{1.8 \times 10^-^5}[/tex]
The correct option is (A).
What is acetic acid?Acetic acid is an organic compound also called ethanoic acid. It is a colorless liquid with a chemical formula [tex](CH_3COOH)[/tex].
It has antibacterial and antifungal properties.
When acetic acid is reacted with water, it completely dissolves in it.
Thus, the correct option is A, [tex]\bold{1.8 \times 10^-^5}[/tex].
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2. Fluorine gas exerts a pressure of 1.2 atm. When the
pressure is changed to 1.50 atm, its volume is 250 mL.
What was the original volume?
Answer:
look at the photo........................
can someone please help me hurry
Answer:
The answer to the question is 148.3 g
Explanation:
To find moles, you want to get rid of the grams by finding molar mass. Then, you have to get rid of grams using cross multiplication. This is why 148.3 grams is on the bottom; it will get rid of the grams on the original amount leaving you moles.
The release of water vapor from sweat glands when we are not sweating is a process called:.
From what we know, we can confirm that the release of water vapor from sweat glands when we are not sweating is a process called insensible perspiration.
What is insensible perspiration?This is a process by which we emit water in the form of vapor from our skin. This process is not to be confused with normal sweating. This happens at a near-constant rate in the human body and is not perceivable. The loss of water through this method also helps the body to maintain its homeostasis levels.
Therefore, we can confirm that the release of water vapor from sweat glands when we are not sweating is a process called insensible perspiration.
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Examine the snapshot of sedimentary layers shown here. Which statements accurately describe the relationship between these organisms? Select ALL that apply. A) Species B is more primitive than species C. B) Species A is more primitive than species B. C) Species C is more primitive than species B. D) Species B is more primitive than species A. E) All three species likely lived at the same time.
Answer:
The answer is: Species A is more primitive than species B.
Explanation:
Species A has worse genetics than all the other fishes.
The table shows the amount of radioactive element remaining in a sample over a period of time.
Radioactive Decay Rate
Amount of Radioactive Sample(grams)
45.0
31.8
22.5
15.9
11.3
Time(years)
0
11
22
33
44
Part 1: What is the half-life of the element? Explain how you determined this.
Part 2: How long would it take 308 g of the sample to decay to 4.8125 grams? Show your work or explain your answer
1. The half-life of the element is 22 years
2. The time taken for 308 g of the sample to decay to 4.8125 g is 132 years
Definition of half-lifeHalf-life is simply defined as the time taken for half of a material to decay.
1. How to determine the half-life Original amount (N₀) = 45 gHalf of the original amount = 45 / 2 = 22.5 gFrom the diagram, the time for 22.5 g is 22 years.
Thus, the half-life of the element is 22 years
2. How to determine the time i. Determination of the number of half-lives Original amount (N₀) = 308 gAmount remaining (N) = 4.8125 gNumber of half-lives (n) =?2ⁿ = N₀ / N
2ⁿ = 308 / 4.8125
2ⁿ = 64
2ⁿ = 2⁶
n = 6
ii. Determination of the time Number of half-lives (n) = 6Half-life (t½) = 22 yearsTime (t) =?t = n × t½
t = 6 × 22
t = 132 years
See attached photo for diagram
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describing chemical reactions that occur in the kitchen.(6 reaction at least )
Answer:
please read the answer above
exothermix reaction if you touched a flask where such a reaction was occurring, it would feel
It feel hot and feel warmer than before the reaction started.
which of the following best describe the chronological way of specimen preparation?
Plss, Help me
( Non - sense Reported )
( NICE Answer Brainliest )
Have a good night guys
Answer:
There are many reasons to examine human cells and tissues under the microscope. Medical and biological research is underpinned by knowledge of the normal structure and function of cells and tissues and the organs and structures that they make up. In the normal healthy state, the cells and other tissue elements are arranged in regular, recognizable patterns. Changes induced by a wide range of chemical and physical influences are reflected by alterations in the structure at a microscopic level, and many diseases are characterized by typical structural and chemical abnormalities that differ from the normal state. Identifying these changes and linking them to particular diseases is the basis of histopathology and cytopathology, important specializations of modern medicine. Microscopy plays an important part in haematology (the study of blood), microbiology (the study of microorganisms including parasites and viruses), and more broadly in the areas of biology, zoology, and botany. In all these disciplines, specimens are examined under a microscope.
hope it helps
Answer:
See the attachment...!!!
observation when hydrogen burns in the air
How does a virus cause a disease?
A. They release toxins that poison your body's cell's
B. They use your body's cells to multiply
C. They break down your body's cells for food
D.They rob nutrients from your body's cells
B.
Explanation:
Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick.
Determine the molarity of a solution with a volume of 435. mL and 0.550 mol of solute dissolved.
Answer:
M = 1.26
Explanation:
Molarity = mole of solution/liters of solution
435mL/1000 = .435L
Plugging in the numbers into the formula, we get:
Molarity = .550 mol/.435L = 1.26 M
When cleaning a buret, begin by coating the inside with:.
Answer:
I think the answer is distilled water...
Explanation:
A simple sugar is composed of equal parts carbon and water, which gave rise to the general name of any sugar as a.
Answer:
Identify the disaccharide that fits each of the following descriptions: a. not a reducing sugar b. composed of two glucose units c. also called milk sugar d. hydrolysis gives glucose and fructose
For which pair of functions is the exponential consistently growing at a faster rate than the quadratic over the interval mc015-1. Jpg? mc015-2. Jpg mc015-3. Jpg mc015-4. Jpg mc015-5. Jpg.
Quadratic equation is a polynomial equation of the second degree.
What is a quadratic equation?The term quadratic equation refers to an equation of the type ax^2 + bx +c. It is a polynomial of degree 2. The highest power of x therein is only 2.
The question is incomplete hence we can't really tell which of the pair of functions in which the exponential is consistently growing at a faster rate than the quadratic over the interval.
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Answer:C
Explanation:
When atoms lose electrons and form negatively charged ions, they always become smaller for two reasons.
True or false
Answer:
true, I've seen this before, it's true
how to calculate formal charge on a lewis structure
Answer:
count how many electrons it 'owns'
Which one of the following states that energy can be transformed in different ways but can never be created or destroyed?
A. Charles's Law
B. Second law of thermodynamics
C. Entropy
D. First law of thermodynamics
Answer:
D. first law of thermodynamics
1. Explain again the
difference between
heat energy and
temperature.
Answer:
Heat describes the transfer of thermal energy between molecules within a system and is measured in Joules. Heat measures how energy moves or flows. ... Temperature describes the average kinetic energy of molecules within a material or system and is measured in Celsius (°C), Kelvin(K), Fahrenheit (°F), or Rankine (R).
Explanation:
I hope it's helpful for you
Answer: Heat Energy/Thermal Energy is not the same as temperature. You mesure how hot or cold it is with a thermometer and it shows the temperature in either Fahrenheit or Celsius. Temperture is a way to measure the warm or coldness of a object. But it is a manifestation of heat energy. "is a physical quantity that expresses the degree of hotness or coldness of a substance. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder or hotter.. Temperature is measured with a thermometer."
Explanation:
What are some examples of the Law of Conservation of Mass ?
Answer:
The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases equals the original mass of the charcoal and the oxygen when it first reacted.
Explain why it is advantageous that water does not evaporate quickly on earth
PLEASE HELP!!
Answer:
When the humidity is 100 percent, the air is saturated with water. Air pressure also affects evaporation. If air pressure is high on the surface of a body of water, then the water will not evaporate easily. The pressure pushing down on the water makes it difficult for water to escape into the atmosphere as vapor.
Explanation:
It is advantageous that water does not evaporate quickly on Earth because the soil and Earth water will be conserved.
What is evaporation?Evaporation is a process by which a liquid is converted to the gaseous state.
The water on the Earth surface in liquid form is evaporated with an increase in heat.
However, it is advantageous that water does not evaporate quickly on Earth because the water on the Earth surface will be conserved i.e. available for future use.
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What does the law of conservation of energy imply?
O A. That energy within matter can never be released
O B.
B. Tihin atoms will always combine to give off energy
Tuhin atoms
O c. That energy can only be converted between different forms
O D. That kinetic energy can only be converted to heat
Answer:
B. That energy can only be converted between different forms
Explanation:
The law of conservation of energy implies that energy can only be converted between different forms but can neither be created nor destroyed.
Energy is the ability to do work. It is very important physical quantity that is essential to all life forms.
Energy according to the law of conservation of energy is not produced neither is it destroyed.
Energy is simply transformed from one form to another.
Does crumpled paper and a flat sheet of paper have the same weight
Answer:
NO, THE CRUMPLED PAPER WEIGHT'S MORE THAN FLAT SHEET OF PAPERA 25. 0-ml sample of 0. 150 m hydrocyanic acid is titrated with a 0. 150 m naoh solution. What is the ph beforeany base is added? the ka of hydrocyanic acid is 4. 9 × 10-10.
Answer:
stars,auroras,a neon sign
Explanation:
just did it
An advantage of using natural gas, rather than oil, as a fuel is that natural gas is:.
Answer:
Natural gas is environmentally friendly because it burns cleaner than other fossil fuels. It's safer and easier to store when compared to other fossil fuels. Natural gas is extremely reliable, unlike electric power that can be knocked out during a storm. Natural gas is less expensive than other fossil fuels.
Explanation:
A sugar that has the chemical formula c5h10o5 would be characterized as _____.
Please help it’s due tomorrow morning and I def want to sleep today
Answer:
Nitrogen: N3-
Aluminum: Al3+
Fluorine: F-
Sulfur: S2-
Oxygen: O2-
Argon: Ar
Explanation:
Argon is a noble gas, so it doesn't have a normal ionic charge.
Which of the following is true about this lever?
It will rotate clockwise.
It will rotate counter-clockwise.
It is balanced and will not rotate
it will rotate clock wise
One reaction step in the conversion of ammonia to nitric acid involves converting NH3 to NO by the following reaction:
4 NH3(g) + 5 O2(g) --> 4 NO(g) + 6 H2O(g)
If 1.50 g of NH3 reacts with 2.75 g O2, then:
1. Which is the limiting reactant?
2. How many grams of NO and H2O form?
3. How many grams of the excess reactant remain after the limiting reactant is completely consumed?
the answer would be 2.75 x 4 nh3
