Answer:
alkenes
nucleophiles
electrophiles
syn
anti
syn and anti
Explanation:
Compounds that contain a carbon-carbon double bond are known as alkenes
Alkenes are electron rich; therefore, simple alkenes do not react with nucleophiles or bases, but will react with electrophiles or acids.
In the IUPAC system, an alkene is identified by the suffix -ene-
Addition reactions in which two parts Of a reagent are added to the same side of
a double bond are known as syn additions.
Addition reactions in which two parts of a reagent are added from opposite
sides of a double bond are called anti additions
Halogenation and halohydrin formation occur with syn and anti -additions.
Further explanations:
Compounds that contain a carbon-carbon single bond are known as alkanes. Compounds that contain a carbon-carbon double bond are known as alkenes. Compounds that contain a carbon-carbon triple bond are known as alkynes.
Nucleophiles are electron rich so they react with electron deficient centers while Electrophiles are electron deficient so they react with electron rich centers.
what is solvent ?
PLSS CAN SOME ONE ANSWER?
Answer:
A solvent is a substance that dissolves and turns into a solution.
Explanation:
What happens to the particles of a gas when the gas changes into a liquid? (5 points)
Oa
They move faster.
Oь
They slow down
Oc
They increase in size,
Od
They decrease in size.
Answer:
ь
They slow down
Explanation:
Which statement explains why astronauts appear to bounce when they are walking on the moon?
The force of gravity acting on the astronauts is stronger on the moon than on Earth
The force of gravity acting on the astronauts is weaker on the moon than on Earth.
The force of air resistance acting on the astronauts is weaker on the moon than on Earth.
The force of air resistance acting on the astronauts is stronger on the moon than on Earth
Astronauts appear to be bouncing on the moon because the force of gravity is weaker on the moon.
What is the importance of the force of gravity?On planets such as Earth and natural satellites such as the moon, gravity causes objects are pulled towards the center of the planet/natural satellite.
How is gravity different on the moon?On the moon, this force is weaker than on the Earth. Indeed, the gravity of Earth is equivalent to 9,807 m/s, while the gravity on the moon is 1,62 m/s.
This causes objects are still pulled towards the center of the moon but they are pulled with a much weaker force. Therefore, when people walk on the moon they seem to bounce.
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what are qualitative and quantitative significance of chemical equation.
Explanation:
Well, the qualitative significance of a chemical equation is that it shows us concisely, and economically how matter interacts chemically in the breaking, and making of chemical bonds to form new substances…
Quantitatively, ALL stoichiometrically balanced equations show us that MASS is CONSERVED, and that “TANSTAAFL” , i.e. “there ain’t no such thing as a free lunch” , operates. And so 5∙g , 5∙kg , 5∙tonne of total REACTANT from all sources, leads to AT MOST to 5∙g , 5∙kg , 5∙tonne of total PRODUCT…. and in practice, we are not even going to get that… Electronic charge is also conserved in every chemical reaction … and we use this conservation principle when we write redox equation…
Chemical equations are the symbolic expression of the compounds and elements. It shows the quality and quantity by the chemical interaction and stoichiometry coefficient.
What is a chemical equation?A chemical equation expresses the chemicals of the reactant and the product side in the form of symbols and mathematical expressions. They are quantitatively significant as they represent the stoichiometry coefficient. It tells about the moles needed by the reactants needed for product formation.
They also are qualitatively important as they depict the phases of the reactants and the products and tell the type of reaction like the decomposition, oxidation, reduction, combustion, etc. undergone by the substances.
Therefore, the chemical equation is significant both qualitatively and quantitatively.
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If you add 0.001 moles of sodium chloride to a liter of water, what will be the pH of the solution?
Answer:
The pH of the resulting solution will be 7.
Explanation:
Sodium chloride is a salt that is formed from the reaction of sodium hydroxide (a strong base) and hydrochloric acid ( a strong acid), as shown below.
[tex]NaOH \ + \ HCl ----> \ NaCl \ + \ H_2O[/tex]
Generally, when strong acids react with strong bases, neutral salts and water are formed. Sodium Chloride (NaCl) is an example of such neutral salts formed.
Since sodium chloride (NaCl) is neutral, its concentration will not alter the pH of the water and the pH of the resulting solution will be 7.
what are evidence that a chemical change has occurred
Answer:
Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas.
Formation of a Precipitate.
Color Change.
Temperature Change.
Production of Light.
Volume Change.
Change in Smell or Taste.
If, as a pioneer, you wished to warm your room by taking an object heated on top of a pot-bellied stove to it, which of the following 15-pound objects, each heated to 100 degree C, would be the best choice? The specific heat capacity (in J/g- degree C) for each substance is given in parentheses. Iron (0.450), copper (0.387), granite (0.79), gold (0.129), water (4.184).
a. iron
b. copper
c. granite
d. gold
e. H2O
Answer:
e. H₂O
Explanation:
The specific heat capacity is defined as the amount of heat required to raise the temperature of the substance in 1 unit. If you have to warm your room, you have to choose the substance with the highest specific heat capacity value. This substance will retain the highest amount of heat. From the options, the highest value is 4.184 J/g°C (water, H₂O). Thus, 1 gram of water will retain 4.184 J when the temperature is raised to 1°C. That is a higher amount of heat in comparison with, for example, granite, which is able to retain 0.79 J per gram when the temperature is raised to 1°C.
However, you have to consider that the boiling point of water is 100°C, so the temperature at which you have to warm the room is the temperature at which water will be passing to the gas state.
7 g of table salt is added to water in a dish. The dish is then heated until all the water evaporates. This is an example of a
change.
Answer:
Physical change
Explanation:
A physical change is one in which no new substance is formed and can be reversed using physical methods.
When we mix the salt and water, we have merely carried out a physical change. No new substance was formed. To recover the salt, we simply heat the solution to dryness.
Hence, this is an example of a physical change.
Question 2 of 5 A geologist is studying a mountain. It is made up of many relatively even layers of igneous rock. What can the geologist conclude about how the mountain formed? A. It formed when a glacier melted and deposited rock and sediment. B. It was formed by many layers of sediment piling up. O c. It was formed by a series of volcanic eruptions. D. It formed when an earthquake caused faults to form in a body of rock. SUBMIT
Answer:
why did you delete my answer?
Explanation:
The answer is C. It was formed by a series of volcanic eruptions.
The geologist conclude about how the mountain formed should be option c. t was formed by a series of volcanic eruptions.
What are volcanic eruptions?It is the eruption where the lava and the gas should be released from the volcano. Also, it is the dangerous eruption type that we known as the glowing avalanche.
At the time when the geologist is study the mountain so each comprise of layers of igneous rock. so it should be created by the series of volcanic eruptions.
hence, the option c is correct.
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What is weather? Can you explain?
Answer:
weather is the state of the air at a particular place and time.
Explanation:
weather can be warm or cold, dry or wet, windy or cloudy
What could an experimenter use to distingush between a strong acid and a strong base ?
Answer: methyl orange indicator
Explanation: Any indicator is actually suitable since the pH range is very high for strong acid and strong base reaction. You could also use phenolphthalein and methyl red indicator
A sample of nitrous oxide has a volume of 120 L at 1.500 mm Hg and = 10°C. Calculate
its pressure when its volume is compressed to 50 L and its temperature increased to
34°C
Answer:
3.91 mmHg
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 120 L
Initial pressure (P₁) = 1.5 mmHg
Initial temperature (T₁) = 10 °C
Final volume (V₂) = 50 L
Final temperature (T₂) = 34 °C
Final pressure (P₂) =?
Next, we shall convert 10 °C and 34 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T₁) = 10 °C
Initial temperature (T₁) = 10 °C + 273
Initial temperature (T₁) = 283 K
Final temperature (T₂) = 34 °C
Final temperature (T₂) = 34 °C + 273
Final temperature (T₂) = 307 K
Finally, we shall determine final pressure of the gas as follow:
Initial volume (V₁) = 120 L
Initial pressure (P₁) = 1.5 mmHg
Initial temperature (T₁) = 283 K
Final volume (V₂) = 50 L
Final temperature (T₂) = 307 K
Final pressure (P₂) =?
P₁V₁/T₁ = P₂V₂/T₂
1.5 × 120/283 = P₂ × 50 / 307
Cross multiply
P₂ × 50 × 283 = 1.5 × 120 × 307
P₂ × 14150 = 55260
Divide both side by 14150
P₂ = 55260 / 14150
P₂ = 3.91 mmHg
Thus, the new pressure of the gas is 3.91 mmHg
Which of the following are examples of conservable quantities? a. potential energy and length c. mechanical energy and mass b. mechanical energy and length d. kinetic energy and mass
Answer:
b
Explanation:
The conserved quantities obeys the conservation laws. Among the given options mechanical energy and mass are examples of conservable quantities. The correct option is C.
What are conserved quantities?A conserved quantity is defined as something which remains constant in amount over time and it cannot be created nor destroyed. In an isolated system, energy is an example of a conserved quantity.
The conserved quantities can change form one state to another, for example from light to heat, but the total amount of energy in the system will not change. Some of the other examples of conserved quantities are electric charge, momentum and angular momentum.
The mass can neither be created nor be destroyed, so it is a conserved quantity. Similarly the mechanical energy which is the sum of potential and kinetic energy is also conserved.
Thus the correct option is C.
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Determine the electron geometry, molecular geometry, and idealized bond angles for each of the following molecules.
a. CF4
b. NF3
c. OF2
d. H2S
Answer:
CF4- electron geometry- tetrahedral
Molecular geometry- tetrahedral
bond angle- 109 degrees
NF3- electron geometry- tetrahedral
Molecular geometry- trigonal planar
bond angle - less than 109 degrees
OF2 - electron geometry- tetrahedral
Molecular geometry- bent
bond angle- less than 109 degrees
H2S- electron geometry- tetrahedral
Molecular geometry- bent
less than 109 degrees
Explanation:
All the compounds mentioned here are based on a tetrahedron according to VSEPR theory. There are four regions of electron density in each molecule.
However, the presence of lone pairs causes a distortion away from the expected tetrahedral geometry predicted by VSEPR theory.
Hence the presence of one or more lone pairs on the valence shell of the central atom causes distortion from the expected geometry.
A: moving away from
B: moving towards
C: sliding past
Answer:
B.moving towards each other
Answer:
B. moving towards
they move towards each other to create the trench
If an archaebacterial species lives in a pool that is 0.01 M HCl(aq), what is the pH of the water
Answer:
2
Explanation:
From the question given above, the following data were obtained:
Molarity of HCl = 0.01 M
pH =?
Next, we shall determine the concentration of the hydrogen ion, [H⁺] in the pool. This can be obtained as follow:
HCl (aq) <=> H⁺ (aq) + Cl¯ (aq)
From the balanced equation above,
1 mole of HCl produced 1 mole of H⁺.
Therefore, 0.01 M HCl will also produce 0.01 M H⁺.
Thus, the concentration of the hydrogen ion, [H⁺] in the pool is 0.01 M
Finally, we shall determine the pH of the pool.
This can be obtained as follow:
Concentration of the hydrogen ion [H⁺] = 0.01 M
pH J?
pH = – Log [H⁺]
pH = – Log 0.01
pH = 2
Therefore, the pH of the pool is 2.
The answer to the problem: (2.1x103) x (4x105) = _____, written to the correct number of significant digits and in scientific notation is:
!! Carat denotes to the power. Example: 10^4 is 104 !!
Answer: The answer is [tex]8.4\times 10^8[/tex]
Explanation:
Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
The rule apply for the multiplication and division is :
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
Thus for product of [tex](2.1\times 10^3)\times (4\times 10^5)[/tex]
In this problem, 2.1has 2 significant figures and 4 is an exact number with infinite significant digits thus product will have the least number of significant figures which is 2. So, the answer will be in 2 significant figures.
Therefore, the answer is [tex]8.4\times 10^8[/tex]
what is 1.602176*10-¹⁹/ 1.758820*10¹¹C kg-¹
with proper explanation.
or expanded form
Answer:
0.00000000910938;
9.109380 * 10^-9
Explanation:
Given the question :
Given :
1.602176*10-¹⁹/ 1.758820*10¹¹
The numbers are expressed in the form:
A * 10^b ; Where;
A = Coefficient ; 10 = base ; b = exponent
The Coefficients can be divided directly as :
1.602176 / 1.758820 = 0.9109380
Using the division law of indices, the exponents acn be worked out as follows since they have the same base :
10^-19 / 10^-11 = 10^(-19 - (-11)) = 10^(-19+11) = 10^-8
Thus, we have ;
0.9109380 × 10^-8
In standard form:
9.109380 * 10^-9
In Expanded form:
10^-8 = 0.00000001
0.9109380 * 0.00000001 = 0.00000000910938
0.000000009 +
0.0000000001 +
0.00000000000 +
0.000000000009 +
0.0000000000003 +
0.00000000000008
__________________
0.00000000910938
___________________
A waterfall is an example of:
A.
energy being destroyed.
B.
energy being created.
C.
kinetic energy is converted into potential energy.
D.
potential energy is converted into kinetic energy.
Answer:
D
Explanation:
PE highest at top of waterfall, 0 at bottom, while 0 KE at top and max KE at bottom. PE becomes KE as water falls down the waterfall
When, particles starts moving they gain a kinetic energy. During waterfalls the potential energy is converting to kinetic energy. Hence, option D is correct.
What is kinetic energy?Kinetic energy is a form of energy generated by virtue of the motion of an object. Whereas potential energy is generated by virtue of the position of the object. Potential energy is stored in an object when it is in rest.
Kinetic energy is gained by the movement of particles. When particles starts moving by a force or with the aid of thermal energy, they acquire the energy for displacing from their position where, their potential energy get reduced by moving.
When water is trapped in a dam it is in rest and it have only potential energy. But when it is flowing it have some kinetic energy and if it is falling down, the energy will be higher by the downward force of gravitation and thus gains more kinetic energy. Thus, option D is correct.
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Can anyone help me with my Chemistry homework? I’m struggling and i need help. Since I can’t message anyone in here, I will you my number. Comment yes if you can, I’d really appreciate it
Answer:
yes i can help you ig ........
The ______ system produces and stores leukocytes and lymph.
Olymphatic
O reproductive
O nervous
O digestive
Answer:
Lymphatic
Explanation:
[tex]\mathrm{\bold Answer:}[/tex]
[tex]\huge\boxed{\sf The~ lymphatic ~system}[/tex]
[tex]\mathrm{\bold Explanation:}[/tex]
[tex]\underline{\sf The~ primary ~function ~of ~the ~lymphatic ~system ~is ~to ~'transport ~lymph'.}[/tex] [tex]\underline{\sf It~ produces~ and~ releases ~white ~blood ~cells, ~know ~as ~lymphocytes.}[/tex] [tex]\underline{\sf The~ lymphatic ~system ~produces ~and ~stores ~leukocytes ~and ~lymph.}[/tex]
[tex]\bold{\mbox Hope~ this ~helps! :)}[/tex]
100 points PLEASEEE HELP ASAPPPP PLEASE Identify the kinds of bonds present between/among the given atoms/elements:
Sodium (Na) and Chlorine (Cl) _____________
Oxygen( O) and Oxygen ( O) ______
Sulfur ( S) and Oxygen ( O) ______
Nitrogen (N) and Nitrogen ( N) ________
Aluminum (Al ) and Bromine ( Br) ______
Answer:
20, 50, 25
Explanation:
I just figured it out somehow in my brain.
Which might you use to observe the properties of matter?
smell
taste
sight
all of the above
In one of his experiments, Lavoisier placed 10.0 grams of mercury (II) oxide into a sealed container and heated it. The mercury (II) oxide then reacted in the presence of heat to produce 9.3 grams of mercury. Oxygen gas was another product in the reaction. According to the law of conservation of mass, how much oxygen gas would have been produced?
Oxygen gas produced : 0.7 g
Further explanationGiven
10.0 grams HgO
9.3 grams Hg
Required
Oxygen gas produced
Solution
Reaction⇒Decomposition
2HgO(s)⇒2Hg(l)+O₂(g)
Conservation of mass applies to a closed system, where the masses before and after the reaction are the same
mass of reactants = mass of products
mass HgO = mass Hg + mass O₂
10 g = 9.3 g + mass O₂
mass O₂ = 0.7 g
When poured into water, glycerol (also a liquid) falls to the bottom of the
beaker. Which of the following is a true statement? *
The water is less dense than the glycerol
An object that floats in water will always float in glycerol
O An object that floats in glycerol will always float in water
Answer:
im going to go with the water is less dense than the glycerol
Explanation:
Decide which element probably forms a compound with oxygen that has a chemical formula most and least similar to the chemical formula of the compound formed by oxygen and magnesium.
Comparing chemical formula of compound formed with oxygen:
strontium potassium selenium lithium
most similar to magnesium
least similar to magnesium
Answer: most similar o magnesium : strontium
least similar to magnesium : selenium
Explanation:
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Magnesium forms a cation having an oxidation state of +2 called as [tex]Mg^{2+}[/tex] and oxygen forms an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral [tex]MgO[/tex]
Thus an element which will form cation with same oxidation state of +2 will be strontium and form [tex]SrO[/tex].
Lithium and potassium both belong to group 1 and thus will form cations with oxidation state of +1 and form [tex]Li_2O[/tex] and [tex]K_2O[/tex] respectivley.
Selenium is a non metal and thus will form covalent compound with formula [tex]SeO_2[/tex]
Draw the Lewis structure, including unshared pairs, of the following molecules. Carbon has four bonds in the compound.
a. Propane (C3H8)
b. Methanol (CH40)
c. Methyl fluoride (CH3F)
d. Ethyl fluoride (C2H5F)
Explanation:
Refer to attachment.
PropaneMethanol (methyl alcohol) methyl fluorideethyl fluorideThe Lewis dot structure of the following compounds is attached in the attachment below .
Lewis dot structures are also called as electron dot structures and can be drawn if the molecular formula of a compound is known. It provides information regarding the nature of bond and the position of atoms .
They are also capable of exhibiting the lone pair if any present in a molecule or compound.Lewis defined a base to be an electron pair donor and an acid to be an electron pair acceptor.
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helpppp me pleaseeee asaaap
kaloy also pala spark kabootan paano
PLEASE HELP I WILL GIVE YOU BRAINLIEST
Answer:
GREATER
Explanation:
I just know this
What is the molar solubility of nickel(II) sulfide in 0.091 M KCN? For NiS, Ksp = 3.0 × 10 –19; for Ni(CN) 4 2–, Kf = 1.0 × 10 31.
Answer:
The value is [tex]x = 0.0227 \ M[/tex]
Explanation:
From the question we are told that
The concentration of [tex]KCN \ \ i.e \ \ CN^{-}[/tex] is [tex]M_1 = 0.091 \ M[/tex]
The solubility product constant for [tex]NiS[/tex] is [tex]K_{sp} = 3.0 *10^{-19}[/tex]
The stability constant for [tex]Ni(CN)_4 ^{2-}[/tex] is [tex]K_f = 1.0 *10^{31}[/tex]
Generally the dissociation reaction for NiS is
[tex]Ni S \underset{}{\stackrel{}{\rightleftharpoons}} Ni^{2+} + S^{2-}[/tex]
Generally the formation reaction for [tex]Ni(CN)_4 ^{2-}[/tex] is
[tex]4CN^- + N_i ^{2+} \underset{}{\stackrel{}{\rightleftharpoons}} \ Ni(CN)^{2-}_{4}[/tex]
Combining both reaction we have
[tex]4CN^ - + NiS \ \underset{}{\stackrel{}{\rightleftharpoons}} \ Ni(CN)^{2-}_4 + S^{2-}[/tex]
Gnerally the equilibrium constant for this reaction is
[tex]K_c = K_{sp} * K_f[/tex]
=> [tex]K_c = 3.0 *10^{-19 } * 1.0 *10^{31}[/tex]
=> [tex]K_c = 3.0*10^{12}[/tex]
Generally the I C E table for the above reaction is
[tex]4CN^ - \ \ \ + \ \ \ NiS \ \ \ \ \ \ \ \underset{}{\stackrel{}{\rightleftharpoons}} \ \ \ \ \ Ni(CN)^{2-}_4 \ \ \ \ \ \ \ \ \ + \ \ \ \ \ \ \ \ \ S^{2-}[/tex]
initial [ I] 0.091 0 0
Change [C] -4x +x + x
Equilibrium [E ] 0.091 - 4x x x
Here is x is the amount in term of concentration that is lost by [tex]CN^-[/tex] and gained by [tex]Ni(CN)_4 ^{2-}[/tex] and [tex]S^{2-}[/tex]
Gnerally the equilibrium constant for this reaction is mathematically represented as
[tex]K_c = \frac{[Ni (CN)_4^{2-} ] [S^{2-} ] }{ [CN^{-}]^4}[/tex]
=> [tex]3.0*10^{12} = \frac{x * x}{ [0.091 - 4x ]^4}[/tex]
=> [tex]3.0*10^{12}* [0.091 - 4x ]^4 = x^2[/tex]
=> [tex][0.091 - 4x ]^4 = \frac{x^2}{3.0*10^{12}}[/tex]
=> [tex][0.091 - 4x ] = \sqrt[4]{ \frac{x^2}{3.0*10^{12}}}[/tex]
=> [tex][0.091 - 4x ] = \frac{\sqrt{x} }{1316}[/tex]
=> [tex]119.8 - 5264x =\sqrt{x}[/tex]
Square both sides
[tex](119.8 - 5264x)^2 =x[/tex]
=> [tex]14352.04 - 1261255 x + 27709696x^2 = 0[/tex]
=> [tex]27709696x^2 - 1261255 x + 14352.04 = 0[/tex]
Solving using quadratic equation
The value of x is [tex]x = 0.0227 \ M[/tex]
Hence the amount in terms of molarity (concentration) of [tex]Ni(CN)_4 ^{2-}[/tex] and [tex]S^{2-}[/tex] produced at equilibrium is [tex]x = 0.0227 \ M[/tex] it then means that the amount of NiS (nickel(II) sulfide) lost at equilibrium is [tex]x = 0.0227 \ M[/tex]
So the molar solubility of nickel(II) sulfide at equilibrium is
[tex]x = 0.0227 \ M[/tex]