Diesel fuel and kerosene.
Gasoline and diesel are used as fuels for motor vehicles.
Kerosene is used as jet fuel.
Naphthar is a major petrochemical feedstock.
I hope this helps..
A student combines 364.6 g of HCl with 80 g of NaOH in 5 L of water. What additional volume of H2O must be added to this mixture to yield a solution with a pH of 1? Note that the molar mass of HCl is 35.46 g/mole, while that of NaOH is 40 g/mole.
Answer:
75L of additional water to have a pH 1 solution
Explanation:
The reaction of HCl With NaOH is:
HCl + NaOH → H₂O + NaCl
By using molar mass of each reactant you can know how many moles will react, thus:
HCl: 364.6g HCl ₓ (1mol / 36.46g) = 10 moles HCl
NaOH: 80g NaOH ₓ (1mol / 40g) = 2 moles NaOH
That means after the reaction will remain in solution, 10-2 = 8 moles of HCl = 8 moles of H⁺ (In water, HCl dissociates as H⁺ and Cl⁻ ions).
A solution with pH = 1 contains:
pH = -log [H⁺]
1 = -log [H⁺]
0.1M = [H⁺]
As molarity, M is the ratio between moles and liters and you want a solution 0.1M having 8 moles of H⁺ you require:
0.1M = 8 moles H⁺ / 80L
As the student combines the solution with 5L of water, you require
75L of additional water to have a pH 1 solutionwhat happens to the concentration of a product over the course of a reaction
Answer:
it becomes poisonous to the body
Calculate mass in grams of 1.2 moles of HNO 3
first, we need the molar mass of HNO3(azotic acid) it's equal to 1AH+1AN+3AO(where A is the atomic mass of the element present within the molecule and, it's multiplied by how many times it's present)=1*1+1*14+3*16=15+54=69g/mole
now we multiply the molar mass with the number of moles 69*1.2=82.8 grames
Which are characteristics of a prokaryotic cell? Select three options. contains DNA lacks DNA contains ribosomes lacks ribosomes contains a nucleus lacks a nucleus
Answer:
Prokaryotic cells contain DNA, contain ribosomes, and lack a nucleus.
Answer:
Contains DNA
Contains Ribosomes
lacks a nucleus
Explanation: I took the quiz on edge
For biomass, solar, coal, natural gas, oil, and geothermal energy, identify each energy resource as renewable or non-renewable.
Answer:
biomass is renewable
solar is renewable
coal is non-renewable
natural gas is non-renewable
oil is non-renewable
geothermal energy is renewable
Explanation:
The biomass, solar and geothermal are renewable source of energy and coal, natural gas and oil are non renewable source of energy.
What is renewable source of energy?Renewable energy is defined as the energy derived from natural source of energy that are replenished at the higher rate then they are consumed.
It can also be defined as the energy that are collected from renewable resources that are replenished on a human time scale.
Solar, wind, tidal, biomass, geothermal etc. are some of the example.
Non renewable energy is defined as the natural resource of energy that cannot be easily replaced by human means at a pace quickly enough to keep up with the consumption.
Coal, petrol, oil, natural gas, fossil fuel etc. are some of the example.
Thus, the biomass, solar and geothermal are renewable source of energy and coal, natural gas and oil are non renewable source of energy.
To learn more about renewable source, refer to the link below:
https://brainly.com/question/13258110
#SPJ2
How do you find the amount of electrons for any element?
Answer:
If you know the number of protons and neutrons you have to simply subtract the number of neutrons by number of protons the answer will be number of neutron
Explanation:
Answer:
We can find the amount of electrons through its Atomic number and with the help of electronic configuration
4.Acrylic fibres are also known as
a)Terry cot
b)Orlon
c)Polyester
d)None of these
Answer:
B
Explanation:
DuPont created the first acrylic fibers in 1941 and trademarked them under the name Orlon.
(PLEASE HELP, LAST QUESTION I NEED! ) Describe to me the purpose of stoichiometry calculations.
Explanation:
Stoichiometry measures these quantitative relationships, and is used to determine the amount of products and reactants that are produced or needed in a given reaction. Describing the quantitative relationships among substances as they participate in chemical reactions is known as reaction stoichiometry.
Acid rain is the direct result of acid released by burning fossil fuels.
Please select the best answer from the choices provided
ОТ
OF
Answer:
The answer is TrueHope this helps you
in Analytical chemistry laboratory. Nickle(ppm)in water sample estimated by two different students was as ,student 1 (25 24 24 24 24 28 26 ) and student 2 (24 25 24 24 25 25 ), if the true valude on Nickle in water was 20 ppm estimate the precision and accuracy of both students
Answer:
Answers are in the explanation
Explanation:
Precision and accuracy are both statistical concepts. Precision is about how close are the measured values to each other. Accuracy is closeness of the measured values to a specific value or reference value.
There are many ways to calculate precision and accuracy, one is stimating precision as Relative Uncertainty and accuracy as Relative Error.
Formulas are:
Relative Uncertainty: Standard desviation / Measured value.
Relative Error: Measured Value - Expected Value / Expected value
Measured value is the aveage of the values.
For student 1:
Mean = 25
Standard desviation = 1.5275
Relative Uncertainty: 1.5275 / 25
Relative Uncertainty: 0.061
Relative Error: 25 - 20 / 20
Relative Error: 0.25
For student 2:
Mean = 24.5
Standard desviation = 0.5477
Relative Uncertainty: 0.5477 / 24.5
Relative Uncertainty: 0.02
Relative Error: 24.5 - 20 / 20
Relative Error: 0.225
As the student 2 has a low Relative error and uncertainty, you can say student 2 is more accurate and precise
What is Kb for CH3NH2(aq) + H2O(1) CH3NH3(aq) + OH (aq)?
Answer:
Option B.
Kb = [CH3NH3+] [OH-] / [CH3NH2]
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
CH3NH2(aq) + H2O(l) <=> CH3NH3+(aq) + OH- (aq)?
The expression for the equilibrium constant, Kb is simply the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient.
Thus, the expression for the equilibrium constant, Kb fo th above reaction can be written as follow:
Kb = [CH3NH3+] [OH-] / [CH3NH2]
Option B gives the correct expression for Kb.
Answer:b
Explanation:AP EX
Need help ASAP!!!! what is the value (angle) for the C=C=O bond in Ketene i.e. CH2=C=O
Answer:
[tex]180^\circ[/tex] by the VSEPR theory.
Explanation:
This question is asking for the bond angle of the [tex]\rm C=C=O[/tex] bond in [tex]\rm H_2C=C=O[/tex]. The VSEPR (valence shell electron pair repulsion) theory could help. Start by considering: how many electron domains are there on the carbon atom between these two bond?
Note that "electron domains" refer to covalent bonds and lone pairs collectively.
Each nonbonding pair (lone pair) of valence electrons counts as one electron domain.Each covalent bond (single bond, double bond, or triple bond) counts as exactly one electron domain.For example, in [tex]\rm H_2C=C=O[/tex], the carbon atom at the center of that [tex]\rm C=C=O[/tex] bond has two electron domains:
This carbon atom has two double bonds: one [tex]\rm C=C[/tex] bond and one [tex]\rm C=O[/tex] bond. Even though these are both double bonds, in VSEPR theory, each of them count only as one electron domain. Keep in mind that there are only four valence electrons in each carbon atom. It can be shown that all four valence electrons of this carbon atom are involved in bonding (two in each of the two double bonds.) Hence, there would be no nonbonding pair around this atom.In VSEPR theory, electron domains around an atom repel each other. As a result, they would spread out (in three dimensions) as far away from each other as possible. When there are only two electron domains around an atom, the two electron domains would form a straight line- with one domain on each side of the central atom. (To visualize, consider the three atoms in this [tex]\rm C=C=O[/tex] bond as three spheres on a stick. The central [tex]\rm C[/tex] atom would be between the other [tex]\rm C[/tex] atom and the [tex]\rm O[/tex] atom.)
This linear geometry corresponds to a bond angle of [tex]180^\circ[/tex].
hurry I'm on a timer
Which term describes erosion?
O creates small particles
O hardens rock fragments
O transports solid materials
O dissolves rock components
Answer:
transports solid materials
Explanation:
Erosion is a process where solid materials are transported by natural forces such as wind or water.
Answer: c
Explanation:
A drug problem can quickly consume A)a small portions of a person income B)the bulk of a person income C)a person excess income
Answer:
b
Explanation:
a drug problem consumes the bulk of a persons income because drugs are expensive to buy
A drug problem can quickly consume the bulk of a person income
What is a drug problem?A drug is any chemical substance that causes a change in an organism's physiology or psychology when consumed. Drug abuse or substance abuse refers to the use of certain chemicals for the purpose of creating pleasurable effects on the brain.
Drug use can have significant and damaging short-term and long-term effects. Taking some drugs can be particularly risky, especially if you take high doses or combine them with other drugs or alcohol.
People of any age, sex or economic status can become addicted to a drug. Certain factors can affect the likelihood and speed of developing an addiction.
The best way to prevent an addiction to a drug is not to take the drug at all. If your doctor prescribes a drug with the potential for addiction, use care when taking the drug and follow the instructions provided by your doctor. Thus you can save your income.
The correct answer is option B.
Learn more about drug problem, refer:
https://brainly.com/question/23284149
#SPJ2
IUPAC name for [Fe(NH3)4Cl2]NO3
Tetraamminedichloridoiron(3) nitrate
PLZ HELP SUPER STUCK T^T *will give brainiest* (30 points) (plz hurry!! its on a test)
Question: Aluminum is an element. Which best describes what makes up a sample of aluminum? one kind of atom two different kinds of atoms all carbon-based atoms a carbon atom and non-carbon atoms
Answer:
The answer to this is A. One kind of atom
Explanation:
The other options make no sense whatsoever. But enjoy.
I hope this helped.
Answer:
A. One kind of atom
Explanation:
Determine the net iconic equation for the following chemical reaction: HCl(aq) + NH4OH(aq)———-> NH4Cl(aq) + H2O(I) Hint: HCl(aq) is strong acid NH4OH(aq) is a weak base
Answer : The net ionic equation will be,
[tex]H^{+}(aq)+OH^{-}(aq)\rightarrow H_2O(l)[/tex]
Explanation :
In the net ionic equations, we are not include the spectator ions in the equations.
Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.
The given balanced ionic equation will be,
[tex]HCl(aq)+NH_4OH(aq)\rightarrow NH_4Cl(aq)+H_2O(l)[/tex]
The ionic equation in separated aqueous solution will be,
[tex]H^+(aq)+Cl^-(aq)+NH_4^+(aq)+OH^-(aq)\rightarrow H_2O(l)+NH_4^+(aq)+Cl^-(aq)[/tex]
In this equation, [tex]NH_4^+\text{ and }Cl^-[/tex] are the spectator ions.
By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.
The net ionic equation will be,
[tex]H^{+}(aq)+OH^{-}(aq)\rightarrow H_2O(l)[/tex]
A bauxite mining company has got government permission to acquire agricultural land in a location to start surface mining activities. Which of these is the best plan to solve the problem of permanent dislocation of farmers due to mining in the location?
Answer:
make reclamation compulsory after bauxite has been removed
Explanation:
Available options:
choose other infertile and uninhabited locations for bauxite mining
allow agriculture and mining to take place simultaneously in the location
ask farmers in the location to help in mining bauxite
make reclamation compulsory after bauxite has been removed
The correct option and the best plan to solve the problem of permanent dislocation of farmers would be to make reclamation compulsory after the bauxite has been removed.
Reclamation would involve restoring the agricultural land back to its original status prior to the commencement of bauxite mining. By doing this, the farmers can return to their farmland after being temporarily displaced due to the mining activities.
answer is b
please mark brainliest
The ion product of water:
varies with pH
remains constant regardless of the pH
ranges between 1.0 and 10 -14
is only applicable to neutral water
Answer:
remains constant regardless of the pH
Explanation:
The pH refers to the hydrogen potential or hydrogen power that states the aqueous solution acidity. It varies from 0 to 14. The higher pH values denotes more basic solutions while on the other hand, the lower pH values denote more acidic
An acidic solution refers to a solution at which the hydrogen ions concentration is more than the hydroxide ions concentration
Therefore the ion product of water remains constant as the value of both hydrogen ions and hydroxide ions is relatively small as non-dissociated water concentration would remain the same.
Hence, the second option is correct
Answer:
remains constant regardless of the pH
Explanation:
A pressure cooker contains 5.68 liters of air at a temperature of 394 K. If the absolute pressure of the air in the pressure cooker is 205 pascals, how many moles of air are in the cooker? The cooker contains _______ moles of air.
Answer:
The pressure cooker contains 0.000355 moles of air (to three significant figures).
Explanation:
To find the number of moles of air in the pressure cooker, we can use the ideal gas law.
Ideal Gas Law[tex]PV=nRT[/tex]
where:
P is the pressure measured in pascal (Pa).V is the volume measured in cubic meters (m³).T is the temperature measured in kelvin (K) R is the ideal gas constant (8.3144626 J·K/mol).n is the number of moles.Rearrange the equation to solve for n:
[tex]\implies n=\dfrac{PV}{RT}[/tex]
As we have been given the volume in liters, we must first convert it to cubic meters. As 1 liter = 0.001 m³ then 5.68 liters = 0.00568 m³.
Therefore, the values to substitute into the formula are:
P = 205 PaV = 0.00568 m³T = 394 KR = 8.3144626 J·K/molSubstitute the values into the formula and solve for n:
[tex]\implies n=\dfrac{205 \cdot 0.00568}{8.3144626 \cdot 394}[/tex]
[tex]\implies n=0.000355444...[/tex]
[tex]\implies n=0.000355\; \sf mol\; (3\;s.f.)[/tex]
Therefore, the pressure cooker contains 0.000355 moles of air (to three significant figures).
Research how different fossil fuels compare in terms of the amount of carbon dioxide released per kWh of energy. How much carbon dioxide is produced by burning a gallon of gasoline? A gallon of diesel?
Answer:
About 19.64 pounds of carbon dioxide are produced from burning a gallon of gasoline. On the other hand, 22.38 pounds of carbon dioxide are produced from burning a gallon of diesel. So, different fossil fuels will give different amounts of carbon dioxide to be released.
Explanation:
An open flask sitting in a lab refrigerator looks empty, but it is actually filled with a mixture of gases called air. If the flask volume is 4.00 L, and the air is at standard temperature and pressure, how many gaseous molecules does the flask contain
Answer: [tex]1.07\times 10^{23}[/tex] molecules
Explanation:
According to the ideal gas equation:
PV=nRT
P = Pressure of the gas = 1 atm ( at STP)
V= Volume of the gas = 4.00 L
T= Temperature of the gas in kelvin = 273 K ( at STP)
R= Gas constant = 0.0821Latm/kmol
n= moles of gas= ?
Putting in the values we get:
[tex]1atm\times 4.00L=n\times 0.0821Latm/Kmol\times 273K[/tex]
[tex]n=0.178mol[/tex]
Now 1 mole of any substance contains [tex]6.023\times 10^{23}[/tex] molecules at STP
Thus 0.178 mole of any substance contains = [tex]\frac{6.023\times 10^{23}}{1}\times 0.178=1.07\times 10^{23}[/tex] molecules at STP
Thus there are [tex]1.07\times 10^{23}[/tex] gaseous molecules in the flask.
Name one way chemicals can help the environment
Energy storage and transport. Chemical energy transport.
Answer:
to clean the water
Explanation:
Hi does anyone know how to do question 4?
Please show working out thanks.
answer:
a)1.274 g b) 0.013 mole
Explanation:
a) Mass of 1 mol of CuSo4. 5H20=
[tex]63 + 32 + (16 \times 4) + (7 \times 1) + (16 \times 5)[/tex]
=246g
no. moles of CuSo4. 5H2O=
[tex] \frac{mass}{mass \: of \: 1mole} [/tex]
so moles
=
[tex] \frac{3.14}{246} [/tex]
0.013 mole
in the equation
1 mole of sulphuric acid reacts to form 1 mole of CuSo4.5H2O
in other words
0.013 mole of sulphuric acid reacts to form 0.013 mole of CuSo4.5H2O
so mass of 1 mole (Mr) H2So4=
[tex](2 \times 1) + 32 + (16 \times 4)[/tex]
98g
mass of sulphuric acid= mole × mass of 1 mole
so mass= 0.013 × 98
1.274 g
b) In the equation
1 mole of sulphuric acid reacts to form 1 mole of copper(ll) oxide
in other words
0.013 mole of sulphuric acid reacts to form 0.013 mole of copper (ll) oxide
so 0.013 mole of copper(ll) oxide is reacted
Hope it helped and pls mark brainliest
How are the properties of metals and non-metals different?
Answer:
Explanation:
Properties of metals:
1. They have a lustre ( shine )
2. They have a silvery-grey or golden-yellow colour.
3. They conduct heat and electricity.
4. They are ductile ( can be drawn into wires ) .
5.They are malleable ( can be hammered into thin sheets ).
6. They are sonorous ( make a ringing sound when hit ).
Properties of non-metals:
1. They display a variety of colours.
2. They are poor conductors of heat and electricity.
3. They are not lustrous, ductile or malleable.
Hope it helps
plz mark as brainliest!!!!!!
Consider the equation below.
Zn + H2SO4 → ZnSO4 + H2
The mole ratio of zinc to zinc sulfate is
Answer:
1:1
Explanation:
There is one mole of zinc (Zn) and one mole of zinc sulfate (ZnSO₄).
The mole ratio is 1:1.
Hope this helps.
Answer:
1:1
Explanation:
if 140cm3 of methane diffuse into air in 72 sec,how long will it take 210cm3 of sulphur dioxide to diffuse under the same condition ?
Answer:
time for sulphur dioxide to diffuse is 221.05 secs
The time for sulphur dioxide to diffuse is 108 sec.
Which gas diffuses twice quickly as SO2?Sulfur dioxide has a molecular weight of sixty-four and as a result, the square root is 8. since its inversely proportional, on the way to diffuse two times as fast, the rectangular root of the molecular weight should be 4, and subsequently the molecular weight might be 16. So the solution is methane (CH4).
Which gases diffuse the fastest?The charge of diffusion for a gas is inversely proportional to the rectangular root of its molecular mass (Graham's law). The gasoline with the lowest molecular weight will effuse the fastest. The lightest, and consequently fastest, fuel is helium.
Learn more about Sulfur dioxide here: https://brainly.com/question/15654465
#SPJ2
Which is a perfect square?
6’1
6’2
6’3
6’5
Answer:
6^3 I believe.
Explanation:
If it's wrong it may be 6^2 because you should square it, but I think it's 6^3
first ionization energy
Answer:
The first ionization energy is defined as
Energy which is required to pull out one mole of the outermost shell's electrons in a neutral atom from one mole of gaseous atoms to produce 1 mole of gaseous ions each with a charge of 1+.[tex]A\to A^++ e^{-}[/tex] , where A is any neutral atom.In the periodic table, Its value decreases from top to bottom in groups and increases from left to right across a particular period. Helium has the largest first ionization energy.Francium has one of the lowest.I need a help from this question!!
Answer:
B
Explanation:
Please take a look at the picture attached for the drawings and structures.
C2H4 is a alkene (C-C double bond). When steam (water) is added, it turns into an alcohol, where the double bond breaks and a (-OH) functional group is attached to one of the Carbons. In this case, C2H4 ethene is turned into ethanol.
When an alcohol undergoes oxidation, primary alcohols turn into aldehyde (-CHO) or carboxylic acids (-COOH). Secondary alcohol turns into ketone. Ethanol is a primary alcohol. And since it later reacts with propanol, it can only form carboxylic acid when it oxidizes. The product in this reaction is ethanoic acid.
Carboxylic acid reacts with alcohol to form an ester (-COO-). the -COOH group from acid combines with the -OH group from alcohol to form an ester bond -COO- while eliminating H2O. Therefore, when propanol undergoes esterification with ethanoic acid, propyl ethanoate is produced. It is the answer of B.