Write lewis structure of CF2H2 :ť: :F-ċ-H B c- 1 which one is correcte how do we know moleculo polar or non-polar ?
Answers
The Lewis structure for \(CF_2H_2\) is:
H H
l l
C = F
|
F
\(CF_2H_2\) is a non-polar molecule. To determine if a molecule is polar or non-polar, we need to look at the arrangement of atoms and their polarities. If the polarities of the atoms are symmetrical, the molecule is non-polar, otherwise, it is polar. In this case, the bond dipoles are symmetrical and cancel out each other resulting in a non-polar molecule.
A Lewis structure, also known as a Lewis dot diagram or electron dot diagram, is a way of representing the valence electrons of an atom in a chemical compound. The structure is named after Gilbert N. Lewis, who first proposed it in 1916. Lewis structures depict the chemical symbol of the atom in the center, with dots representing the valence electrons surrounding it. The number of dots corresponds to the number of valence electrons in the element.
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Related Questions
which process results in a decrease in relative humidity? a. increasing the actual water vapor pressure b. cooling the air c. decreasing the saturation water vapor pressure d. warming the air
Answers
Decreasing saturation water vapor pressure reduces amount of water vapor air can hold, causing a decrease in relative humidity.
Diminishing the immersion water fume pressure brings about a lessening in relative moistness. Relative mugginess is the proportion of how much water fume in the air to the most extreme measure of water fume that the air can hold at a given temperature and tension. The immersion water fume pressure is the greatest measure of water fume that the air can hold at a given temperature.
At the point when the immersion water fume pressure diminishes, the air can hold less water fume, bringing about a decline in how much water fume in the air for a given measure of water fume pressure. This outcomes in a diminishing in relative mugginess, which is the proportion of the genuine water fume strain to the immersion water fume pressure.
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How many valence electrons are in a highly reactive metal that is explosive with
water?
A).7
B).2
C).1
D).5
Answers
When sodium oxide is added dropwise to a buffered solution the_____ component of the buffer consumes the added hydroxide ion
Answers
When sodium oxide is added dropwise to a buffered solution the weak acid component of the buffer consumes the added hydroxide ion.
What is a buffer?A weak acid and its conjugate base must be present in a buffer. A solution containing these two components can be made in several ways: buffers can be made from weak acids or bases and their salts.
When a buffer is present in the solution, the hydroxide (OH-) ions react with the weak acid in the buffer solution rather than with water, resulting in water and A- ions.
Thus, the weak acid of the buffer absorbs the excess hydroxide ions from the solution.
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. Which type of bond has an equal sharing of electrons?answer choicesPolar Covalent Non Polar CovalentIonicMetallic
Answers
The bond which has an equal sharing of electrons is non polar covalent bond.The relationship created by an equal sharing of electrons between the combining atoms is known as a non-polar covalent bond.
This is because none of the chlorine atoms will attract any electrons because the difference in electronegativity is zero. As a result, no costs will likely arise. When there is an unbalanced distribution of electrons between the two joining atoms, a polar covalent bond is created. As a result, it will draw the hydrogen atom's electron more strongly toward itself. Partial charges will therefore form. The relationship created when a metal and a non-metal share electrons is known as an ionic bond. Thus, it is clear that a non-polar covalent bond is what results when atoms distribute electrons evenly.
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Qert + 9wz - asd + 10
Answers
Answer:
yes
Explanation:
We start with 5.00 moles of an ideal monatomic gas with an initial temperature of 126 ∘C. The gas expands and, in the process, absorbs an amount of heat equal to 1300 J and does an amount of work equal to 2200 J .
What is the final temperature Tfinal of the gas?
Use R = 8.3145 J/(mol⋅K) for the ideal gas constant.
Answers
The final temperature of the gas, after absorbing 1300 J of heat and doing 2200 J of work, is approximately 375.45 K.
To find the final temperature (T_final) of the gas, we can use the first law of thermodynamics, which states that the change in internal energy (ΔU) of a system is equal to the heat added (Q) minus the work done (W) by the system:
ΔU = Q - W
Since the gas is ideal and monatomic, the change in internal energy is related to the temperature change (ΔT) through the equation:
ΔU = nC_vΔT
where n is the number of moles and C_v is the molar heat capacity at constant volume.
Rearranging the equations and substituting the given values:
nC_vΔT = Q - W
(5.00 mol)(3/2R)ΔT = 1300 J - 2200 J
(5.00 mol)(3/2)(8.3145 J/(mol⋅K))ΔT = -900 J
Simplifying:
(37.9725 J/K)ΔT = -900 J
ΔT = -900 J / (37.9725 J/K)
ΔT ≈ -23.70 K
Since the initial temperature is 126 °C, we convert it to Kelvin:
T_initial = 126 °C + 273.15 = 399.15 K
Now we can find the final temperature:
T_final = T_initial + ΔT
T_final = 399.15 K - 23.70 K
T_final ≈ 375.45 K
Therefore, the final temperature of the gas is approximately 375.45 K.
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Which element is most likely to react with Br?
- Fe
- N
- Ar
- Li
Which element is least likely to react with Br?
- Fe
- N
- Ar
- Li
Answers
The element is most likely to react with Br is Li(Lithium). Alkali metals have very low density, which makes them very reactive, because they want to gain energy and become stable.
Lithium is an alkali metal which belongs to group 1 . Bromine (Br) reacts with many metals, sometimes very vigorously. For instance, with potassium, it reacts explosively. Bromine even combines with relatively unreactive metals, such as platinum and palladium. The elements toward the bottom left corner of the periodic table are the metals that are the most active in the sense of being the most reactive. Lithium, sodium, and potassium all react with water, for example.
Out of the given elements the correct choice is Li.
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what is the structure of sodium stearate
Answers
Answer:
C18H35NaO2
Explanation:
Online
Which type of bond is formed by glycogen synthase upon release of UDP?
A.α-1,4-Glycosidic bond
B.α-1,6-Glycosidic bond
C.β-1,4-Glycosidic bond
D.β-1,6-Glycosidic bond
Answers
Glycogen synthase forms an B)α-1,4-glycosidic bond upon release of UDP.
Glycogen synthase is an enzyme that catalyzes the formation of glycogen, a branched polysaccharide that serves as a storage form of glucose in animals. The enzyme adds glucose residues to the growing glycogen chain by forming α-1,4-glycosidic bonds between adjacent glucose molecules.
When the chain reaches a certain length, branching occurs through the formation of α-1,6-glycosidic bonds, catalyzed by the enzyme branching enzyme.
The release of UDP from glycogen synthase occurs after the addition of each glucose residue, and it is required for the enzyme to continue adding glucose residues to the growing glycogen chain. Therefore, glycogen synthase forms B) α-1,4-glycosidic bonds upon release of UDP.
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Question: If red dye is added to cold water and blue dye is added to warm water, which dye will
spread out quicker?
Answers
Answer:
Blue dye spreads out quicker
Explanation:
This is because the dye gets spread out by water molecules. Warm water has faster moving water molecules than cold water.
Starting with 1.550 g of potassium chlorate, a student releases 0.617 g of oxygen gas. If the calculated mass of oxygen gas is 0.607 g, what is the percent yield? A) 39.2% B) 39.8% C) 98.4% D) 102%
Answers
The percent yield can be calculated by dividing the actual yield (0.607 g) by the theoretical yield (0.617 g) and multiplying by 100. The percent yield is option(c) 98.4%.
Percent yield is a measure of the efficiency of a chemical reaction, representing the ratio of the actual yield to the theoretical yield expressed as a percentage. In this case, the theoretical yield is the calculated mass of oxygen gas, which is given as 0.617 g.
To calculate the percent yield, divide the actual yield (0.607 g) by the theoretical yield (0.617 g) and multiply by 100:
Percent yield = (Actual yield / Theoretical yield) * 100
= (0.607 g / 0.617 g) * 100
= 98.4%
Therefore, the percent yield is 98.4%, which means that 98.4% of the expected amount of oxygen gas was obtained in the reaction.
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The plant on the left is growing more because it has been receiving more water
Answers
Answer:
uhhh well ig btw what plant
Explanation:
it would be more sunlight to
Sample H is a mineral found in this sand! This mineral is black and will stick to you when you walk through the sand at the beach. Zoom in really close - sand is very cool to look at when it is magnified. We will look at more later in the class. The sand grains that you should focus on are black. Not all of the black grains are the same mineral however the mineral you're looking for is strongly magnetic. If you ran a magnet just over the top of this sample, some of black sand grains would stick. What mineral is it?
Answers
The mineral that's illustrated based on the information given will be magnetite.
What is a mineral?A mineral simply means any pure substance that has a unique composition and structure.
Since the mineral is black and will stick to you when you walk through the sand at the beach, it's magnetite.
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which solution will provide the lowest freezing point?group of answer choices1.0 m na2co31.2 m nacl1.0 m kcl2.0 m ki
Answers
The mixture of **1.0 M \(Na_2CO_3\)**2 will have the lowest freezing point.
what is The freezing point of a substance?
The temperature at which a liquid transforms into a solid when cooled is known as the freezing point. It is often referred to as the temperature at which a solid melts.
A substance's freezing point is a collective attribute. This indicates that it is dependent on the number of drugs in the system.
The freezing point is given by; T - Ta = K * m * i
Where;
T = freezing point of the pure solution
Ta = freezing point of the solution containing the solute
K = freezing point constant
m = molality of the solution
i= Van't Hoff factor
If we look at all the options provided, KI has only two particles in the solution and a molality of 1.0 m hence it should exhibit the lowest freezing point of the solution.
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The pressure inside a sealed container is 97.9 kPa when the temperature is 298 K.
What will the pressure be if the temperature is 376 K?
Answers
Answer:
123.5 kPa
Explanation:
P2=P1T2/T1
You can check this by knowing that P and T at constant V have a proportional relationship. Hence, this is correct.
what everyday things turn green because acid
Answers
Explanation
They are everyday objects that turn green.
6 CO2 + 6 H2O → C6H12O6 + __ O2
Answers
Answer:
co2 is the answer
Explanation:
I hope it helps you
2. A sample of iron has the dimensions of 2.0 cm x 3.0 cm x
2.0 cm. It has a mass of 94.0 grams. What is the density of
iron? (8 points)
Answers
Answer:
first change cm to m and g to kg so you will find the volume first which is 0.02 by 0.03 by 0.02 your answer is 0.000012 m . using the formula density=mass/volume take 0.094/ 0.00012 then divide
is oatmeal a compound
Answers
Answer:
no
Explanation:
its made of a living organisim which in this case is oats
2-2. (10 points) At the bottom of a flat, quiescent (i.e., no advection) lake there are solid deposits of manganese. Due to a change in redox conditions manganese is dissolving into the water and just above the manganese deposits the concentration is 60μg/L. The lake serves as a water source for the water treatment plant that does not currently have manganese treatment. The water system's goal is for manganese to remain below its detection limit of 2μg/L because manganese accumulation in the distribution system can lead to black water events. a) What is the dominate transport mechanism in the lake? b) The intake at the water treatment plant is 1ft from the lake bottom. How long does the water treatment plant have before it needs to start treating for manganese? Use equation 1−18 in Benjamin and Lawler that is provided for stagnant conditions. The diffusion coefficient for manganese is 6.88×10−6 cm2/s. c) As a temporary solution the water treatment plant plans to raise the water intake level so that it has 1 year to design and install a manganese treatment system. What minimum height above the lake bottom should the intake be raised?
Answers
The dominant transport mechanism in the lake is diffusion. The water treatment plant has a limited time before it needs to start treating for manganese, and the minimum height above the lake bottom for the water intake to provide one year for designing and installing a manganese treatment system needs to be determined.
Dominant transport mechanism: Diffusion is the main transport mechanism in the lake. This means that manganese is gradually diffusing from the solid deposits at the lake bottom into the water column.
Initial concentration: The concentration of manganese just above the deposits is given as 60 μg/L.Detection limit: The water treatment plant aims to keep the manganese concentration below the detection limit of 2 μg/L to prevent black water events.Time to start treating: To determine how long the water treatment plant has before it needs to start treating for manganese, we can use Equation 1-18 in Benjamin and Lawler, which is provided for stagnant conditions. The equation is:t = (L^2) / (4D)
where t is the time in seconds, L is the distance from the bottom (1 ft or 30.48 cm), and D is the diffusion coefficient of manganese (6.88×10^(-6) cm^2/s).
Calculation Plugging in the values into the equation, we can calculate the time it takes for manganese to reach the water intake level.
t = (30.48^2) / (4 × 6.88×10^(-6)) = 126,707 seconds
Converting seconds to days: 126,707 seconds ÷ (24 hours/day × 3600 seconds/hour) ≈ 1.47 days
Therefore, the water treatment plant has approximately 1.47 days before it needs to start treating for manganese.
Minimum intake height: To provide one year for designing and installing a manganese treatment system, the intake should be raised to a height where the time it takes for manganese to reach that level is one year.
t = (L^2) / (4D)
Rearranging the equation to solve for L:
L = √(4Dt)
Plugging in the values: L = √(4 × 6.88×10^(-6) cm^2/s × (1 year × 365 days/year × 24 hours/day × 3600 seconds/hour))
L ≈ 49.65 cm or 0.163 ft
The minimum height above the lake bottom that the intake should be raised to is approximately 0.163 ft.
The dominant transport mechanism in the lake is diffusion, where manganese is slowly diffusing from the solid deposits into the water column. The water treatment plant has approximately 1.47 days before it needs to start treating for manganese to maintain concentrations below the detection limit. To provide one year for designing and installing a treatment system, the intake should be raised to a minimum height of approximately 0.163 ft above the lake bottom.
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Which of the following pairs of elements will combine to produce a covalent bond?
1-Hydrogen and chlorine
2-Magnesium and oxygen
3-Lithium and bromine
Answers
Answer:
Hydrogen and Chlorine
ie HCL
The pairs of chemical elements that will combine to produce a covalent bond is: 1. Hydrogen and chlorine.
In Chemistry, the three (3) main types of chemical bonds include:
Ionic bonds: Lithium and bromineHydrogen bonds: Hydrogen and oxygen.Covalent bonds: Hydrogen and chlorine.A covalent bond can be defined as a type of bond that typically involves the sharing of electrons between the atoms of a chemical element.
For example, the type of bond that is produced (formed) between hydrogen atoms and a chlorine atom is a covalent bond.
The hydrogen atom shares it single electron with a chlorine atom that is having seven (7) valence electrons to produce an inert gas such as hydrochloric acid (HCL).
In conclusion, the pairs of chemical elements that will combine to produce a covalent bond is hydrogen and chlorine.
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How does the immune system works ? ( in 3 steps )
Answers
Answer:
Anatomy of the Immune System
.The immune system is a mobile, circulatingsystem. However, there are some fixed anatomical structures which are important to its function:
immune cells are made within the bone marrow during haematopoiesis
the thymus gland is situated just in front of the heart in the mediastinum. It is active throughout life, but is at its largest in childhood and decreases in size after puberty. It is where lymphocytes mature and receive their immunological “education” before being released into the bloodstream.
mature lymphocytes migrate to lymph nodes, which are small bean-like structures situated along the lymphatic vasculature throughout the body. These filter lymph and provide a site for antigen presentation to the adaptive immune system. Lymph is then returned to the systemic circulation via the thoracic duct, which joins with the left subclavian vein.
the spleen is basically a massive lymph node and is, therefore, another site of antigen presentation to mature lymphocytes. It is part of the reticulo-endothelial system which filters blood and removes old cells, tissue debris, pathogens and immune complexes. It also stores red blood cells and immature monocytes.
finally, the liver is also a site of antigen presentation and contains its own cohort of phagocytes and lymphocytes. This is a vital role, as the liver filters large volumes of potentially contaminated venous blood from the gastrointestinal (GI) tract. It also synthesises acute phase proteins such as CRP in response to infection.
How many orbitals exist for s shape
Answers
Based on its location on the periodic table, what group does Strontium belong to?
Answers
Answer:
alkaline earth metals
Explanation:
Answer:
Group 2
Explanation:
Strontium (Sr), chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table.
Hope this helps
Consider the equilibrium system of cobalt complexes. Co(H20) 2+ (aq) + 4C1- (aq) = CoCl2- (aq) + 6H2O(1) The Co(H20)62+ (aq) complex is pink and the CoC12- (aq) complex is light blue. Determine what each color observation means about changes made to the system at equilibrium. The solution changes from pink to light blue. Choose... The solution changes from light blue to pink. Choose... The solution stays light blue after adding a chemical. Choose..
Answers
The color change of the equilibrium system of cobalt complexes can provide valuable information about changes made to the system at equilibrium. In this case, the Co(H₂0)₆²⁺ (aq) complex is pink and the CoCl₂⁻ (aq) complex is light blue.
If the solution changes from pink to light blue, it means that the concentration of CoCl₂⁻ (aq) complex has increased and the concentration of Co(H₂0)₆²⁺ (aq) complex has decreased. This could be due to the addition of more chloride ions or the removal of water molecules from the system. As a result, the equilibrium shifts towards the side of the equation with fewer chloride ions and more water molecules.
On the other hand, if the solution changes from light blue to pink, it means that the concentration of Co(H₂0)₆²⁺ (aq) complex has increased and the concentration of CoCl₂⁻ (aq) complex has decreased. This could be due to the addition of more water molecules or the removal of chloride ions from the system. As a result, the equilibrium shifts towards the side of the equation with fewer water molecules and more chloride ions.
If the solution stays light blue after adding a chemical, it means that the added chemical has no effect on the equilibrium system. This could be because the added chemical does not react with any of the species in the equilibrium system or because its effect is negligible compared to the existing concentrations of the species.
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Give an example of elastic potential energy
Answers
Answer:
An archer's stretched bow.
Explanation:
Elastic potential energy is energy stored as a result of applying a force to deform an elastic object.
What would happen if you mixed baking soda and milk?
Answers
Answer:
it'll produce carbondioxide bubbles
Answer:
it would prevent the milk from curdling
Explanation:
baking soda is regularly added to milk, believe it or not
1. For each trial, calculate the moles of KHP used to neutralize the NaOH solution and put the answer in the Results Table. (Hint: Use the correct formula from the Discussion section to calculate the molar mass of KHP! It is NOT the mass of K + H + P!)
2. For each trial, using the mole ratio from the balanced equation, calculate the moles of NaOH and put the answer in the Results Table.
3. For each trial, calculate the molar concentration of the NaOH solution and put the answer in the Results Table. (See example in the discussion.)
4. Calculate the average molarity and enter this answer in your Results Table.
5. Submit your Results Table and Calculations in the following corresponding question boxes.
Answers
KHP + NaOH ⇒ NaKP + H₂O this Equation used to find five steps of questions of the the moles of KHP used to neutralize the NaOH solution.
1. To calculate the moles of KHP used to neutralize the NaOH solution, you need to use the balanced equation, which is:
KHP + NaOH ⇒ NaKP + H₂O
The molar mass of KHP is 204.22 g/mol. So, to find the moles of KHP used in each trial, you can use the formula:
moles = mass / molar mass
Where the mass is the mass of KHP used in each trial. Make sure to convert the mass from grams to moles.
2. Using the mole ratio from the balanced equation, you can calculate the moles of NaOH used in each trial. The mole ratio between KHP and NaOH is 1:1, which means that for every mole of KHP used, one mole of NaOH is used. Therefore, the moles of NaOH used in each trial is the same as the moles of KHP used.
3. To calculate the molar concentration of the NaOH solution, you need to use the formula:
molarity = moles / volume
Where the moles are the moles of NaOH used in each trial, and the volume is the volume of NaOH solution used in each trial. Make sure to convert the volume from milliliters to liters.
4. To find the average molarity, you can add up the molar concentrations from each trial and divide by the number of trials. This will give you the average molarity of the NaOH solution.
5. Make sure to record all your calculations in the Results Table, and submit it along with your answers to the corresponding question boxes.
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When a solution becomes more acidic, does its pH increase or decrease? Explain up to 2 to 4 sentences.
Answers
Answer:
it decrease when a solution becomes more acidic which means that decrease in pH means increase..
Answer:
it's ph decreases.. meaning those with a small ph value are more acidic.forinstance one with a ph of 1 is more acidic than the one with a ph of 3.
I hope this helps
Zelda noticed a puddle outside her front door. She saw that the puddle got smaller every day, until the 3rd day when it was completely gone. The next week, she noticed the puddle again. This time the puddle was gone the next day. Since the sun was out the second week but not the first week, Zelda hypothesized that the heat from the sun was the reason for the water evaporating at a faster rate. If she were to set up two containers with equal amounts of water, what would be the best way for Zeldato test her hypothesis\
Answers
Answer: Zelda should place one container of water in sunlight (by a window or outdoors) and the other container in a dark room (closet) away from the sun.
Explanation: This would allow Zelda to test two different settings (sun and no sun) so she can test her hypothesis.