The percent composition of Nitrogen in the compound is 59.42%
The total mass of the compound is 27.6 g
The mass of nitrogen is 16.4 g
The mass of carbon is 11.2 g
The percent composition of nitrogen in the compound can be calculated as follows
= 16.4/27.6 × 100
= 0.5942 × 100
= 59.42 %
Hence the percent composition of nitrogen in the compound is 59.42 %
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Electrons further from the nucleus are partially shielded from the pull of the nucleus.
True
False
Carbon monoxide can be produced when diesel burns in a car engine. Explain how.
Answer:Carbon monoxide is also formed as a pollutant when hydrocarbon fuels (natural gas, petrol, diesel) are burned. The relative amount of CO produced depends on the efficiency of combustion. Older vehicles are checked annually for CO emissions during their MOT test. Interestingly, only one of the two oxides of carbon, doesn't support combustion and it is for this reason that carbon dioxide is used in fire extinguishers. Carbon monoxide does support combustion and burns with a pale blue flame. The blue flame used to be seen over the fires made from coke (essentially a very pure form of carbon) by night watchmen on industrial sites.
2 CO (g) + O₂ (g) → 2 CO₂ (g)
Explanation:
Answer: incomplete combustion process
Explanation:
Carbon monoxide is also formed as a pollutant when hydrocarbon fuels (natural gas, petrol, diesel) are burned. How is carbon monoxide produced by the vehicles? The incomplete combustion process that occurs in an engine; result to the emission of carbon monoxide (CO) as a waste product from the exhaust system of vehicles.
Hope this is correct :D
Compare and contrast the use of fossil fuels and wind energy. (1 point) Both fossil fuels and wind energy can be used to produce electricity. However, burning fossil fuels does not pollute the atmosphere, while using Earth's wind does. O Both fossil fuels and wind energy contribute negatively to climate change. However, mining for fossil fuels is much more damaging to the environment than using wind power. Both fossil fuels and wind energy can be used to produce electricity. However, wind energy does not pollute the atmosphere, while burning fossil fuels does. Both fossil fuels and wind energy contribute negatively to climate change. However, using Earth's wind for energy is much more damaging to the environment than using fossil fuels.
Answer:
The Answer will be provided below, please pay attention in class next time so that you don't have to be in a hurry like you are in now.
Explanation: The correct option is:
Both fossil fuels and wind energy can be used to produce electricity. However, burning fossil fuels does pollute the atmosphere, while using Earth's wind does not. Both fossil fuels and wind energy contribute to climate change, but the use of fossil fuels is much more damaging to the environment than the use of wind power.
Fossil fuels are non-renewable sources of energy that are formed over millions of years by the decomposition of organic matter. They release harmful greenhouse gases when burned, contributing to climate change. In contrast, wind energy is a renewable source of energy that uses turbines to harvest the power of wind. Wind energy does not produce any emissions, making it an environmentally friendly alternative to fossil fuels. While wind turbines can have some impacts on wildlife and habitats, the impact is much less severe than the effects of fossil fuel extraction and burning.
Added Part: Fossil fuels are non-renewable sources of energy that are derived from the remains of plants and animals that died millions of years ago. These sources include coal, oil, and natural gas. Wind energy, on the other hand, is a renewable source of energy that is generated by the kinetic energy of wind.
Here are some comparisons between fossil fuels and wind energy:
Environmental Impact: Fossil fuels have a significant negative impact on the environment. Burning fossil fuels produces greenhouse gases that contribute to climate change. The extraction of fossil fuels also has negative impacts on the air, water, and soil. Wind energy, however, has a very small environmental footprint. Wind turbines do not produce any emissions and do not require any water to generate electricity.
Energy Availability: Fossil fuels are abundant and have been the primary source of energy for decades. On the other hand, wind energy is a relatively new source of energy and the technology is still developing. However, the availability of wind energy is significant, as wind is a renewable source that is constantly available.
Sustainability: Fossil fuels are non-renewable, which means they will eventually run out. As the demand for energy continues to increase, the availability of fossil fuels will decrease. Wind energy is a renewable source of energy that will never run out.
Here are some pros and cons of both fossil fuels and wind energy:
Fossil Fuels:
Pros:
Reliable source of energy
High energy density
Large global infrastructure
Cons:
Non-renewable source of energy
Significant environmental impact
Price instability
Wind Energy:
Pros:
Renewable source of energy
Small environmental footprint
Low operating costs
Cons:
High initial costs for building wind turbines
Wind is an inconsistent source of energy
Can create noise pollution for surrounding communities
What is the length of the paper clip in cm
Answer:
24.5 cm
Explanation:
It would be really complicated to type out, so I've attached an image of how I solved this:
*I separated the paperclip into different sections, figured out the length of those sections, and added them together.
(sorry that my work isn't the neatest)
how to synthesize this compound(in the attachment) from benzene
Organic chemistry is almost synonymous with benzoene. a significant organic compound with several applications. In reality, benzene use and production are significant indicators of a country's industrial advancement.
Thus, In steel, petrochemical, and oil refineries, benzene, a fundamental aromatic chemical, is created.
Numerous downstream petrochemical products, such as detergents, insecticides, resins, and nylon tyres, are produced using it.
In the corresponding aromatic recovery units, steel companies produce benzene from the coke oven gas. Benzene is also produced by a number of petrochemical facilities. So let's examine the various benzene preparation techniques.
Thus, Organic chemistry is almost synonymous with benzoene. a significant organic compound with several applications. In reality, benzene use and production are significant indicators of a country's industrial advancement.
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Question 1
Where does photosynthesis happen in a plant cell?
O Cell membrane
O Cell wall
O Chloroplast
O Mitochondria
Answer:
Chloroplast
Explanation:
Photosynthesis happens in chloroplast of plants. Mitochondira is where the cellular respiration happens.
Which organelles surround the cell? Select two options.
Answer:
The answer is cytoplasm and the nucleus
Explanation:
Answer:
nucleus
Explanation:
what properties of a natural resource make it useful for humans as a materials or energy source?
The properties of a natural resource that make it useful for humans as a material or energy source is the ability to convert mass into energy and vice versa.
What are natural resources?The expression natural resources make reference to all types of matter and energy extracted from nature that can be used to produce goods and services.
Some examples of natural resources include for example irreversible resources such as fossil fuels (i.e., oil, or coal, gas, minerals such as metals, rocks, etc) as well as those based on the use of reversible energy such as eolic air energy, solar radiation or sunlight, soil and hydric resources or water.
Therefore, with this data, we can see that natural resources can be defined as any material and or energy obtained from nature that may be irreversible or reversibly used to produce goods and services.
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what are 2 ways that all hydrocarbons are alike?
Answer:
Composition: All hydrocarbons are made up of only two types of atoms: carbon and hydrogen. They are like building blocks that contain carbon and hydrogen stuck together.
Organic Nature: Hydrocarbons are special because they are part of a group of compounds that come from living things or things that were once alive. They have carbon and hydrogen in them, which is what makes them different from other types of compounds.
Explanation:
student is studying chemical changes and mixes two liquid compounds. Which statement best describes what the student should observe if a chemical reaction is occurring?
• The two substances dissolve.
O A solid substance appears.
• The mass of the substances increases.
• The temperature of the substances stays the same
If a chemical reaction or chemical change takes place, a solid substance appearing is an indication of chemical change taking place.
What are chemical changes?Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.
There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
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What doesn’t change the resistance of a wire
The factor that doesn’t change the resistance of a wire is pressure. option A.
What is resistance of a wire?Resistance is a conductor's capacity to thwart the passage of current. It is controlled by the interplay of the applied voltage and the electric current passing through it. The amount of opposition any object applies to the flow of electric current is referred to as resistance.
The ohm, a unit of measurement for resistance, is represented by the Greek letter omega. According to Ohm's law, the voltage across two places is precisely proportional to the current flowing through a conductor between them.
Hence option A is correct.
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missing part;
The pressure
The length of the resistor.
The thickness of the resistor.
The temperature of the conductor.
Why are invasive species such a huge threat to ecosystems?
Invasive species are impossible to control once they are introduced and spread rapidly
Invasive species can replace native species, forcing their migration out of the area
Invasive species provide no added benefit or diversity to the ecosystem
Invasive species can do intense damage so much so that ecosystems may not be able to recover
Answer: Its D the guy above is wrong dont use his answer he got me a 75
Explanation:
PLSSSSS I NEED HELP MY AMPLIFY SIM WON’T WORK I DONT KNOW WHAT TO DO FOR AMPLIFY TAB 3.5.!! IM IN THE PURPLE GROUP !! The lead chemist wants you to determine what is happening to the freedom of movement of an object’s molecules when you smell something. Is it possible to smell a chocolate bar when it is a solid? Launch the Sim and investigate.
Use the Sim to determine if the molecules of a substance can be in two different phases at the same time.
Go through each substance and see if you can get it to exist in two phases at once.
Record as much evidence as you can in the table below.
When a chocolate bar is solid, it is able to smell it. It is also important to note that a substance 's molecules cannot be in two distinct phases at the a time.
Why is this the case ?In general, it is not possible for a the molecules of the chocolate to be in two distinct phases at the same time.
It must be noted that smelling a solid, such as a chocolate bar, however, mean the release of loose molecules from the solid, which may then move through the air and reach our olfactory receptors in our nose, allowing us to sense the fragrance.
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in parts per million, a 125g of sulfate is found in 1kg of water. what is the concentration of sulfate in water? with solution
pls help
c) Discuss precision and Accuracy as they relate to types of errors.
what is the answer
Precision relates to the consistency and reproducibility of measurements, while accuracy reflects how close measurements are to the true value.
Precision and accuracy are two important concepts in the context of errors in measurements. While they both pertain to the quality of data, they refer to different aspects.
Precision refers to the degree of consistency or reproducibility in a series of measurements. It reflects the scatter or spread of data points around the average value. If the measurements have low scatter and are tightly clustered, they are considered precise. On the other hand, if the measurements have a high scatter and are widely dispersed, they are considered imprecise.
Accuracy, on the other hand, refers to the closeness of measurements to the true or target value. It represents how well the measured values align with the actual value. Accuracy is achieved when measurements have a small systematic or constant error, which is the difference between the average measured value and the true value.
Errors in measurements can be classified into two types: random errors and systematic errors.
Random errors are associated with the inherent limitations of measurement instruments or fluctuations in the measurement process. They lead to imprecise data and affect the precision of measurements. Random errors can be reduced by repeating measurements and calculating the average to minimize the effect of individual errors.
Systematic errors, on the other hand, are caused by consistent biases or inaccuracies in the measurement process. They affect the accuracy of measurements and lead to a deviation from the true value. Systematic errors can arise from factors such as instrumental calibration issues, environmental conditions, or experimental techniques. These errors need to be identified and minimized to improve the accuracy of measurements.
In summary, precision refers to the degree of consistency or reproducibility of measurements, while accuracy refers to the closeness of measurements to the true value. Random errors affect precision, while systematic errors affect accuracy. To ensure high-quality measurements, both precision and accuracy need to be considered and appropriate techniques should be employed to minimize errors.
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A sample of an unknown compound is vaporized at 160 c . The gas produced has a volume of 2330 ml at a pressure of 1.00 atm ,and it weighs 2.10 g
Round answer to 3 significants digits
The molar mass is 3230.8 g/mol
How to determine the valueFirst, we need to know that the formula for the general gas law is represented as;
PV = nRT
such that the parameters are;
P is the pressureV is the volumen is the number of molesR is the gas constantT is the temperatureSubstitute the values
1 × 2.33 = n × 8.314 × 433.15
Multiply the values, we get;
n = 2.33/ 8.314 × 433.15
Divide the values
n = 6.5 × 10⁻⁴ moles
But, number of moles = mass/molar mass
Molar mass = 2.10/ 6.5 × 10⁻⁴
Molar mass = 3230.8 g/mol
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The diagram below represents a specimen in the low-power field of view of a compound light microscope. If the slide is not moved, which view best represents the way the specimen will look when the high-power objective lens is switched into place?
Coarse and excellent adjustment The coarse adjustment knob solely be used with the lowest electricity objective lens. Once it is in focus, you will only need to use the best focus. Using the coarse center of attention with greater lenses may result in crashing the lens into the slide.
Why does the specimen have to be founded in the field of view on low strength before going to high power?You must have the object situated before you exchange objectives to increase the magnification, because the subject of view turns into smaller; if the object is off to the side, it might also disappear when you go to higher magnification.
When viewing a specimen on a compound light microscope the photograph is right aspect up but reversed True or false?The optics of a microscope's lenses alternate the orientation of the photo that the consumer sees. A specimen that is right-side up and going through proper on the microscope slide will appear upside-down and going through left when considered through a microscope, and vice versa.
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How many grams of liquid water are produced when 60 grams of ice melt? Explain why.
60 Grams are produced due to the fact that it may not produce more due to the certain capacity that varies on the size of the cube.
give the IUPAC name for the organic compound
Answer:
methanide
Explanation:
not sure
PLEASE!! HELP!!
A 25.0 L balloon at 20ºC is placed in a hot water bath at 90ºC. After 15 minutes, the volume of the balloon stops expanding. What is the new volume of the balloon?
Answer:
After 15 minutes,the volume of the balloon stops expanding
A solution with a pH of 8 is?
Answer:base
Explanation:
base
A solution with a pH of 8 is basic in nature.
pH is defined as the negative logarithm of H⁺ ion concentration.
pH is a measure of how acidic or basic a substance is. In our everyday routine, we encounter and drink many liquids with different pH. Water is a neutral substance. Soda and coffee are often acidic.
The pH is an important property, since it affects how substances interact with one another and with our bodies. In our lakes and oceans, pH determines what creatures are able to survive in the water.
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A pressure cooker allows food to be cooked under high pressure. Why is this useful?
Answer:
the higher pressure allows the cooking to be done in water at a higher temperature which means the cooking goes faster without drying out the food.
Use the exponential notation to express the physical quantities
(a) V = 15.50 mL to L
Answer:
hdoehdbdjdmsosmebbdxndksnsjsjs
With enough ____________,
_______________, and
__________, the original
sedimentary or igneous rock is
changed to ______________ rock.
Answer: with enough heat, pressure, and time, the original sedimentary or igneous rock is changed to metamorphic rock.
Explanation:
Explain how a rainbow is produced
A rainbow is produced through a proces that includes refraction, reflection, and dispersion of sunlight.
What more should you know about the production of rainbows?A rainbow is formed when sulinght is refracted and reflected by rain drops in the atmospher.
The sunlight is split into its component colors, which is why rainbows appear as having an array of colors. This is due to each color being bent by a different amount during refraction.
The colors of a rainbow are always in the same order, with red on the outside and violet on the inside.
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A gas has a volume of 54.0 mL at 475 torr and -13 degrees C . What will be the new volume be at STP?
Answer:35.437 mL
Explanation:
Combined gas law
P1V1/T1 = P2V2/T2
P1= 475 torr
V1= 54 mL
T1= 260.15 Kelvin
T2= 273.15 Kelvine
P2= 760 torr
V2=
V2=P1V1T2/(T1P2) m
V2= 475 X 54 X 273.15 / (260.15 X 760) =35.437 mL
Translate each number into standard notation, maintaining the same number of significant figures.a. 1.72x10^3b. 9.07x10^-2
Answer:
a. 1720.
b. 0.0907.
Explanation:
Hello,
In this case, when translating scientific notation to standard notation one should move the decimal place the times the power indicates, that is for a, three places to the right (add zeros to complete it) and for b, two places to the left, therefore, we obtain:
a. 1720.
b. 0.0907.
Best regards.
Which type of property does each statement describe?
Drag each tile to the correct location.
The boiling point of methane is
‑161.5°C.A sample of steel is 2 meters
in length.The water in a beaker has a
volume of 50 milliliters.Chlorine gas is green.A sample of gold has a mass of
5 grams.The freezing point of ethanol is
‑114.1°C.
The property described by each statement is as follows:
The boiling point of methane is ‑161.5°C: Intensive propertyA sample of steel is 2 meters in length: Extensive propertyThe water in a beaker has a volume of 50 milliliters: Extensive propertyChlorine gas is green: Intensive propertyA sample of gold has a mass of 5 grams: Extensive propertyThe freezing point of ethanol is ‑114.1°C: Intensive propertyWhat is intensive property?Intensive property is the property of a material that does not depend on the amount or shape of the material.
On the other hand, extensive property is the property of a component or system that is a function of the whole component, a property that changes if material is added or subtracted to the component.
Examples of intensive properties are;
DensityBoiling and freezing pointTemperatureExamples of extensive property are;
VolumeMassLengthTherefore, the property described by each statement is as follows:
The boiling point of methane is ‑161.5°C: Intensive propertyA sample of steel is 2 meters in length: Extensive propertyThe water in a beaker has a volume of 50 milliliters: Extensive propertyChlorine gas is green: Intensive propertyA sample of gold has a mass of 5 grams: Extensive propertyThe freezing point of ethanol is ‑114.1°C: Intensive propertyLearn more about intensive property at: https://brainly.com/question/13733851
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2C +2H yield C2H4 Delta H=+52.4 kj/mol
What is the kj of energy absorbed for every mole of carbon reacted
The kJ of the energy absorbed for the every mole of the carbon reacted is 104.8 kJ.
The chemical equation is as :
2C + 2H ---> C₂H₄ , ΔH = + 52.4 kJ/mol
The ΔH is the enthalpy change that is determined by the subtracting the energy of the reactants to the products.
The ΔH = energy of the products - energy of the reactants
The expression for the energy is as :
q = n ΔH
Where,
n = number of the moles
ΔH = enthalpy change
The kJ of the energy absorbed for the every mole of the carbon reacted :
q = 2 mol × 52.4 kJ/mol
q = 104.8 kJ
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Calculate the freezing point of a solution made by dissolving 13 g potassium sulfide in 150 g H2O Kf for water = 1.86 C/m
Answer:
\(T_F=-4.4\°C\)
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to calculate the freezing point of an aqueous solution of potassium sulfide by using the following equation:
\(T_F=T_{solv}-i*m*Kf\)
In such a way, we firstly calculate the molality of this solution according to:
\(m=\frac{\frac{13g}{110.262 g/mol} }{0.150kg} =0.79m\)
Finally, since the Van't Hoff's factor for K2S is 3, the freezing point of the solution turns out to be:
\(T_F=0\°C-3*0.79m*1.86\°C/m\\\\T_F=-4.4\°C\)
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