The activating groups are; -NH2, -NR2 > -OH, -OR> -NHCOR> -CH3. while the deactivating groups are; -NO2, -CF3> -COR, -CO2R, -SO3H > Halogens.
Electrophillic substitutionOwing to the unusual stability of the benzene ring, it does not undergo addition like other unsaturated species, rather benzene does undergo electrophillic substitution.
The substituent groups determine whether the molecule will be activated or deactivated towards electrophilic substitution, the following groups decativate benzene towards electrophilic substitution; -NO2, -CF3> -COR, -CO2R, -SO3H > Halogens. The following groups activate benzene ring towrads electrophilic substitution; -NH2, -NR2 > -OH, -OR> -NHCOR> -CH3.
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The Henry's law constant for H2 is 8.1×10−4 Matm at 25∘C. What pressure of hydrogen is needed to maintain a H2 concentration of 0.42 M?
The pressure of hydrogen needed to maintain a H₂ concentration of 0.42 M is 518.5 atm
Henry's lawThis states that the solubility / concentration of a gas in liquids at constant temperature is proportional to its pressure. Mathematically, it can be expressed as
S = KP
Where
S is the solubility / concentration K is the Henry's constant P is the pressure How to determine the pressure Henry's constant (K) = 8.1×10¯⁴ M/atmConcentration (S) = 0.42 MPressure (P) =?P = S / K
P = 0.42 / 8.1×10¯⁴
P = 518.5 atm
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a balloon flies off when the opening is released a. Newton’s First Law b. Newton’s Second Law c. Newton’s Third Law
B. Newtons second law! Have a great day!
What volume of a o.25m solution can be prepared with 28.5g of k2s molar mass 110.26
Answer: Can you repost the answer it will not let post my answer
Explanation: pleaee
What is the molarity of a methanol solution produced when 0.2 L of a 3 M solution was diluted to 0.8 L?
A-0.2M
B- 0.4M
C-0.75M
D-0.8M
The molarity of the methanol solution produced at the given number of moles and volume is 0.75 M.
Molarity of the methanolThe molarity of the methanol is determined from the ratio of the number of moles of the methanol to the volume of the methanol.
The molarity of the methanol is calculated as follows;
Molarity = moles/volume
moles = 0.2 L x 3 M = 0.6 mole
Molarity = 0.6 mol/0.8 L
Molarity = 0.75 M
Thus, the molarity of the methanol solution produced at the given number of moles and volume is 0.75 M.
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What kind of system is the coffee cup calorimeter considered, and what does that mean in terms of energy transfer?.
Answer:
A coffee cup calorimeter is a constant-pressure calorimeter.
Explanation:
As such, the heat that is measured in such a device is equivalent to the change in enthalpy.
7. 06 equilibrium lab report
I need it bad if anybody has it
Chemical equilibrium is a dynamic equilibrium that is affected by changes in temperature, concentration and pressure
What is chemical equilibrium?Chemical equilibrium is a dynamic state in a chemical reaction in which the rate of forward reaction is equal to the rate of backward reaction.
For a reaction in equilibrium, the following factors affect equilibrium:
temperature pressure concentrationThe principle of chemical equilibrium states that in an isolated system in equilibrium, equilibrium will shift to annul any constraint applied in the system.
Therefore, chemical equilibrium is dynamic and is affected by temperature, concentration and pressure.
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The substance oxidized causes the other substance to be reduced and is called the:.
Answer:
Reducingagent
Explanation:
Hope this helps you :)
Pls mark brainliest :P
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Tori
Complete and balance the following half-reaction in acidic solution.
Answer: Heyo Kenji Here! Here's your answer- N2(g) → NH4+(aq)
Explanation: Hope this helps!
Have a nice day!
- Kenji ^^
HELP PLEASE
Earth seems to be the only planet in our solar system that can support life. Which of these is NOT a reason why life is found on Earth?
Question 3 options:
The presence of water on Earth.
It is the perfect distance from the Sun.
It only has slight surface elevation differences
Answer:
it only has slight surface elevation differences
Explanation:
What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
The volume of a gas is 204 ml when the pressure is 925 kPa at constant temperature what is the final pressure if the volume increases to 306 ml?
Calculate. 925 x 1.5 is 412.5 + 412.5 + 412.5.
This totals to 1387.5 kPa.
Convert 10.1 kcal to J
1cal=4.184J
Hence
10.1kcal10.1(1000)cal10100cal10100(4.184)42258.4JHow many liters of CO2 are produced when 32. 6 liters of propane gas, C3H3 reacts
with excess oxygen gas at STP?
C3Hg + 502 + 4H2O + 3CO2
Answer: Propane is c3h8 and oxygen gas is O2
Explanation: make sure equation is balanced and There are 3 carbons in the reactants, and 3 carbons in the products also There are 8 hydrogens in the reactants and 8 hydrogens in the products even though There are 10 oxygens in the reactants and 10 oxygens in the product its already balanced so therefore you then need to convert the amount of moles of oxygen to the number of moles of propane to get your answer
Determine the gram-formula mass of the magnesium sulfate heptahydrate
Answer:
120.366 g/mol
Explanation:
MAGNESIUM SULPHATE HEPTAHYDRATE Magnesium sulfate is an inorganic salt containing magnesium, sulfur and oxygen, with the formula MgSO4. Molar mass: 120.366 g/mol
Answer:
sulfur and oxygen, with the formula MgSO4. Molar mass: 120.366 g/mol
Explanation:
Hi its me a another me lol
What is the total number of atoms in ammonium hydroxide, NH4OH ?
2
4
7
HELP ASAP
Answer:
7Explanation:
Number of Nitrogen atoms : 1 atom
Number of Hydrogen atoms : 1(4) + 1 = 4 + 1 = 5 atoms
Number of Oxygen atoms : 1 atom
Total atoms
1 + 5 + 17 atomsCalculate atoms of each element
N=1H=4+1=5O=1Total atoms
1+5+17What is the name of this hydrocarbon? a chain of 5 carbon atoms, with h above and below each c, and to the left and right of the chain. hexane heptane octane pentane
The name of the hydrocarbon having hydrogen atoms above and below each carbon atom and at the ends of carbon chain is pentane.
What are hydrocarbons?Hydrocarbons are the compounds which are formed by the combination of hydrogen and carbon atoms.
In the question it is mention that in the compound 5 carbon atoms are present and there specifically not mention the bonds so that single bonds are present between all of them. And hydrogen atoms are attached to single carbon atoms to fulfill their valency.
Hence required hydrocarbon is pentane and its structure is attached below.
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If your sweat glands suddenly got clogged or blocked, what function of the Integumentary system might not work anymore?
A.
Vitamin D production
B.
Protection of the body
C.
Regulating body temperature
D.
Gathering information from the environment
C. Regulation body temperature
What is the molarity of 5.30 g of Na2CO3 dissolved in 400.0 mL solution?
5.30 g of Na2CO3 dissolved in 400.0 mL solution.
to find:the molarity
solution:[tex]mv = \frac{grams}{molar \: mass} [/tex]
[tex](x)(0.4000l) [/tex]
[tex] = 5.30g |105.988g \: {mol}^{ - 1} [/tex]
[tex] = 0.12501415m[/tex]
[tex] x = 0.125m[/tex]
therefore, the molarity of 5.30 g of Na2CO3 dissolved in 400.0 mL solution is 0.125m.
Predict the effect of each of the following on the indicated equilibrium system in
terms of the direction of equilibrium shift (forward, reverse, or neither)
H2(g) + Cl2(g) <--> 2HCl(g) + 194 kJ
a) addition of Cl2
b) removal of HCI
c) increased pressure
d) decreased temperature
e) removal of H2
f) decreased pressure
g) addition of a catalyst
h) increased temperature
i) decreased system volume
D
The effects of each of the following on the equilibrium system in the question are as follows :
A) Addition of Cl₂ ; equilibrium shifts to reverse
B) Removal of HCl ; equilibrium shifts to the reverse
C) Increased pressure ; neither
D) Decresed temperture ; neither
E) Removal of H₂ ; Forward
F) Decreased pressure : neither
G) Addition of catalyst : Forward
H) Increased temperature : Forward
I) Decresed system volume : Neither
Effects on equilibrium systemThe change in volume and pressure in an equilbrium system with equal number of gaseous molecules of reactants and products will not have an effect on the direction of shift of the equilibrium system. But the change in temperature, increase or decrease of reactants and products will have an effect on the direction of the equilibrium shift of the system.
Hence we can conclude that the effects of the following on the equilibrium system is as listed above.
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How would aluminum and phosphorus form a bond
Explanation:
Aluminum happens to have 3 extra electron's. luckily, every phosphorus atom is looking to gain 3 electrons. it is a perfect match!!!
The horizontal rows on the periodic table of elements are known as:.
Answer:
periods
Explanation:
In chemsitry, the horizontal columns are known as periods and the vertical columns are known as groups.
Which is an example of an automatic decision that doesn’t require a lot of thinking?
A. To do homework or not
B. What to buy as a gift for someone
C. What to read
D. Whom to invite to your house to play
Answer
to do homework or not
Explanation:
you can figure it out in one second
Answer:
To do homework or not
Explanation: You should always do homework or else you get in big trouble
PLS HELP I NEED ASAP
what is the slowest speed for an object to escape the gravitational attraction of a celestial body (planet, moon, etc.)?
Answer:
the escape velocity
Explanation:
To do this, your rock has to go very fast – more than 11 kilometers per second. This velocity is called the escape velocity, the speed an object must achieve in order to overcome the gravitational attraction of a celestial body (be it a planet, a star, or a galaxy) and escape into space
found it online, lol better then nothing
Each element in the periodic table can be represented by a chemical symbol. Match each element to its chemical symbol.
Na
N
H
Cl
Hg
Mercury
arrowBoth
Sodium
arrowBoth
Nitrogen
arrowBoth
Chlorine
arrowBoth
Hydrogen
arrowBoth
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
The Correct pair of Element and it's symbol ~
Mercury - HgSodium - Na Nitrogen - NChlorine - ClHydrogen - HSodium hydroxide is a strong base. This means that ________. NaOH cannot be neutralized by a weak acid NaOH does not dissociate at all when it is dissolved in water aqueous solutions of NaOH contain equal concentrations of H (aq) and OH-(aq) NaOH dissociates completely to Na (aq) and OH-(aq) when it dissolves in water NaOH produces a gaseous product when it is neutralized
Sodium hydroxide is a strong base means that NaOH dissociates completely to Na (aq) and OH-(aq)
What is a strong base?A strong base is a base that is completely dissociates in solution to yeild the hydroxide ion in high concentration.
Hence, the fact that sodium hydroxide is a strong base means that NaOH dissociates completely to Na (aq) and OH-(aq) when it dissolves in water.
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Determine the pressure change when a constant volume of gas at 0.850 atm is heated from 20.0C to 30.0C
Answer:
0.425 atm
Explanation:
According to Ideal Gas Equation,
PV = nRTTherefore, P ∝ TP₁T₂ = P₂T₁Given :
P₁ = 0.850 atmT₁ = 20.0 CT₂ = 30.0 CSolving :
0.85 x 30 = P₂ x 2030 x 17/20 = P₂ x 20510 = 400P₂P₂ = 510/400 = 1.275 atmChange in pressure = ΔP = P₂ - P₁ = 1.275 - 0.850 = 0.425 atmQuestion 4(Multiple Choice Worth 5 points)
(06.01 LC)
Which of the following properties of an object affects the gravitational force it exerts?
Its color
Its mass
Its shape
Its temperature
Answer:
b
Explanation:
NEED HELP ASAP
Consider the following equation:
Cu+2AgNO3=Cu(NO3)2+Ag
If 0.286 mol of Cu(NO3)2 were produced, how many mol of Cu reacted?
Answer:
5.6 moles of AgNO3 is required to produce 2.8 moles of Cu(NO3)2Explanation:Cu + 2AgNO3 Cu(NO3)2 + 2AgBefore solving this one must make sure the equation is balanced. From the balance equation you could notice that the AgNo3(silver nitrate) has 2 moles while the Cu(NO3)2 has 1 mole. If 2 moles = 1 mole ? = 2.8 molescross multiply 2.8 x 2 = 5.6 moles
Explanation:
what is 2CO in a chemical formula
Answer:
Co2
Explanation:
The coefficient 2 is multiplied on the invisible 1 (Co1) so it becomes CO2
Or
2co represents 2 molecule of carbon monoxide
PLEASE HELP!!!!!!! SCIENCEE!!!!
THE CHOICES ARE: 1, 2, 3 FOR THE FIRST ONE.
THE SECOND ONE: from a common ancestor, completely independently of each other
Answer:
a) 1
b) from a common ancestor
Explanation:
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What was the initial reactant concentration for the reaction described in part a?.
Answer:
The integrated rate laws for zero-, first-, and second-order reaction may be arranged such that they resemble the equation for a straight line, y = mx + b. Part A The reactant concentration in a zero-order reaction was 0.100 M after 100 s and 1.50x10-2 M after 360 s. What is the rate constant for this reaction? Order 0 1 | 2 Integrated Rate Law Graph [A] =- kt +[A]o [A] vs. t In[A] = -kt + In[A]o In[A] vs. t = kt + Á A vs. t Slope -k -k k Express your answer with the appropriate units. Indicate the multiplication of units, as necessary, explicitly either with a multiplication dot or a dash. ► View Available Hint(s) koth = 3.27x10-4 M S Submi Previous Answers Correct Important: If you use this answer in later parts, use the full unrounded value in your calculations.
Explanation: