CH2O
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons and nonbonding electrons.
C2Cl4
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons and nonbonding electrons.
CH3NH2
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons and nonbonding electrons.
CFCl3 (C central)
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons and nonbonding electrons.
Answers
The given molecules are structural diagrams of CH₂O (formaldehyde), C₂Cl₄ (tetrachloroethylene), CH₃NH₂ (methylamine), and CFCl₃ (trichlorofluoromethane). These diagrams depict the arrangement of atoms in each molecule, showcasing their respective structures.
Here are the structural diagrams for the given molecules:
1. CH₂O (Formaldehyde):
O
||
H-C-H
||
2. C₂Cl₄ (Tetrachloroethylene):
Cl Cl
| |
C = C
| |
Cl Cl
3. CH₃NH₂ (Methylamine):
H
|
H - C - N - H
|
H
4. CFCl₃ (Trichlorofluoromethane) with carbon (C) as the central atom:
F
|
F - C - Cl
|
Cl
Note : The diagrams are simplified structural representations and may not reflect the actual bond angles and molecular shapes accurately.
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Related Questions
Which of the following equations illustrates the law of conservation of
matter?
A. 4AI + 0₂ → 2Al2O3
B. 2Al + 0₂ → Al₂O3
C. 4AI +30₂ → 2Al₂O3
D. 2Al +302 → Al₂O3
Answers
Answer:
C
Explanation:
First of all, the law of conservation of matter states that " In an ordinary chemical reaction, the mass of the products is equal to the mass of the reactants."
So, the answer should be C since the mass of Al and O₂ is equal on both the reactant's and product's side.
4Al + 3O₂ → 2Al₂O₃
Reactants Side: 4 aluminum and 6(3*2) oxygen
Products Side: 4(2*2) aluminum and 6(2*3) oxygen
how many atoms are in the compound 3AI(C2H3O2)2
Answers
Answer:56
Explanation:YW
The electrolysis of water forms h2 and o2. 2h2o right arrow. 2h2 o2 what is the percent yield of o2 if 10.2 g of o2 is produced from the decomposition of 17.0 g of h2o? use percent yield equals startfraction actual yield over theoretical yield endfraction times 100.. 15.1% 33.8% 60.1% 67.6%
Answers
The percent yield of oxygen if 10.2 g of O₂ is produced from the decomposition of 17.0 g of H₂O is 67.6%.
How do we calculate moles from mass?Moles (n) of any substance can be calculated by using their mass as:
n = W/M, where
W = given mass
M = molar mass
Given chemical reaction is:
2H₂O → 2H₂ + O₂
Moles of 17g H₂O = 17g / 18.02 g/mol = 0.943 moles
From the stoichiometry of the reaction it is clear that,
2 moles of H₂O = produces 1 mole of O₂
0.943 moles of H₂O = produces 1/2×0.943=0.471 mole of O₂
Now mass of this 0.471 moles of O₂ = (0.472mol)(32g/mol) = 15.104 grams
Actual mass of oxygen = 10.2g (given)
Now on putting vales on the percent yield formula, we get
% yield = (10.2 / 15.104)×100% = 67.53% = 67.6%
Hence the required value of percent yield is 67.6%.
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Answer:67.6
Explanation:bc im just that good
Oxygen has an electronegativity of 3.4, phosporus has an electronegativity of 2.2 The bond between them is
a. polar covalent
b. non polar covalent
c. metallic
d. ionic
Answers
Answer:
B. polar covalent
Explanation:
Aluminum metal reacts with zinc chloride according to the following unbalanced equation:
Al + ZnCl₂ → Zn + AlCl3
A chemist does not want to waste reactants because they are in short supply. If he begins with 8.5 g of aluminum, what mass of zinc chloride will he measure out for a complete reaction?
Answers
If he begins with 8.5 g of aluminum,62.1 gram of zinc chloride will he measure out for a complete reaction.
What do you mean by the balanced equation of reaction ?The balanced equation of reaction is defined as the total mass of reactant is equal to the total mass of product.
The balanced equation of reaction is as follows:
2Al + 3ZnCl₂ → 2AlCl₃ +3Zn
Now we must use stoichiometry to convert grams of Al to grams of ZnCl₂
The molar mass of aluminum is 27.99 g/mol
The molar mass of zinc chloride is 136.29g/mol
Zn = 65.39
Cl₂ = (35.45) = 70.9065.
= 39+70.90
= 136.329
The mole ratio of ZnCl₂ to Al is 3:2
= 8.5 × 3 × 136.329 / 27.99 × 2
= 62.1 gram
Thus, 62.1 gram of zinc chloride will he measure out for a complete reaction.
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A metal alloy is made by mixing Metal A and Metal B. If 100kg of the mixture contains 60% by mass of metal A and 40% by Mass of metal & Calculate the density of the metal alloy Give density of Metal A as 9000 kgm 3 and density of Metal B as 6000 kgm 3)
Answers
Answer:
The density of the metal alloy is 7,496.25 kg/m^3 (rounded to 7,496 kg/m^3).
Explanation:
The given information from the exercise is:
- Metal alloy mass (m): 100kg
- Mass of metal A (mA): 60kg
- Mass of metal B (mB): 40kg
- Density of metal A (dA): 9,000 kg/m^3
- Density of metal B (dB): 6,000 Kg/m^3
1st) With the values of mass and density of each metal, we have to calculate the volume of each metal:
• Volume metal A:
\(\begin{gathered} V_A=\frac{m_A}{d_A} \\ V_A=\frac{60kg}{9,000\frac{kg}{m^3}} \\ V_A=6.67*10^{-3}m^3 \end{gathered}\)• Volume metal B:
\(\begin{gathered} V_B=\frac{m_B}{d_B} \\ V_B=\frac{40kg}{6,000\frac{kg}{m^3}} \\ V_B=6.67*10^{-3}m^3 \end{gathered}\)The volume of metal A and metal B is 6.67x10^-3 m^3. So, we have to add them to obtain the total volume of the metal alloy:
\(\begin{gathered} V=V_A+V_B \\ V=0.00667m^3+0.00667m^3 \\ V=0.01334m^3 \end{gathered}\)2nd) Now we can calculate the metal alloy density, replacing the values of Volume (V) and the metal alloy mass (100kg) in the density formula:
\(\begin{gathered} d=\frac{m}{V} \\ d=\frac{100kg}{0.01334m^3} \\ d=7.496.25\frac{kg}{m^3} \end{gathered}\)So, the density of the metal alloy is 7,496.25 kg/m^3 (rounded to 7,496 kg/m^3).
What are the different forms of polyester?
Answers
Answer:
PET (Polyethylene Terephthalate): This is the most common form of polyester and is used in many applications, such as in clothing, packaging, and bottles.
PCDT (Poly-1, 4-cyclohexylene-dimethylene terephthalate): This type of polyester is known for its high strength and is used in industrial applications, such as for making conveyor belts, hoses, and cables.
PTT (Polytrimethylene Terephthalate): This is a newer form of polyester that is made using bio-based materials. It is used in clothing, carpeting, and other textile applications.
PBT (Polybutylene Terephthalate): This type of polyester is known for its toughness and is used in electrical and automotive applications, such as for making connectors, switches, and housings.
Thermoplastic Polyester Elastomers (TPEE): These are polyester-based materials that have both thermoplastic and elastomeric properties. They are used in applications such as automotive parts, consumer goods, and sporting equipment.
if you added a much larger excess of t-butyl alcohol, do you think the alkylation would continue to occur and add more t-butyl groups to the benzene ring at the highlighted positions with the red arrows?
Answers
If we add a much larger excess of t-butyl alcohol to the benzene ring in highlighted positions continue then ther will be no further friedel crafts alkylation would continue to occur due to stric hindrance.
First step is aromatic electrophilic substitution. As present in above first figure. The above product result is more expected because these positions are more electron rech. Second step, as we know ortho and para position are more reactive when one OCH₃ group in conjugation, similar for next OCH₃group. In both of reaction the ortho position, of OCH₃ is more electron dense. The last step of Reactions present in above figure.
The further addition of bulky groups, t-butyl groups to the benzene ring to highlighted positions would not continue the friedel crafts alkylation.
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Water has a ""bent"" geometry. Which properties of water create this molecular shape? Water’s oxygen has no lone electron pairs. Water’s oxygen has lone electron pairs that repel each other. Water is nonpolar. Water is ionic.
Answers
Answer:
Water oxygen has lone electron pairs that repel each other.
Explanation:
Water has a "bent" geometry because water’s oxygen has lone electron pairs that repel each other.
What is lone pair of electrons?A pair of valency electrons of opposite spin that are not shared between the atoms in a molecule and are responsible for the formation of coordinate bonds.
A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent.
This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons.
All of the electron pairs—shared and unshared—repel each other.
Hence, option B is correct.
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You have 125g of potassium sulfate and 325.6 L of solution. What is the concentration of your solution?
Answers
Answer:
0.0022 concentration
Explanation:
concentration = moles of solute / liters of solution
first off, convert 125g of potassium sulfate into moles. we can do this using conversion factors. the conversion factor we will use is potassium sulfate's molar mass.
125g K2SO4 * ( 1 mol / 174.259) = 0.720 moles potassium sulfate
then, we follow the concentration formula
0.720 moles potassium sulfate / 325.6 L = 0.0022 concentration
The chemistry teacher decides to use chalk paint to cover a circular portion of a wall
in the science lab. If the greatest distance across the circle is 4 feet, approximately
how big around is the circle?
Answers
The circumference of the circle is approximately 12.57 feet.
What is chalk paint?Chalk paint is a type of paint that is typically used to create a matte, chalky finish on furniture and other surfaces. It is known for its ability to adhere to a variety of surfaces without the need for priming or sanding.
How is the circumference of a circle calculated?The circumference of a circle is calculated using the formula C = 2πr, where C is the circumference, π is approximately equal to 3.14, and r is the radius of the circle (which is half the distance across the circle). So if the greatest distance across the circle is 4 feet, then the radius is 2 feet, and the circumference is approximately 12.57 feet.
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A professional bicyclist rides a time trial in which he travels at 560 kilometers in 4 hours. What is her speed? DON'T FORGET THE CORRECT UNITS!!!!!!
Answers
Answer:
Answer:
speed = 86.99197 miles per hour
Explanation:
Fossils of a now extinct dinosaur have been found near the east coast of South America and the west coast of Africa. The dinosaur
could not swim or fly. What does this suggest about the continents of South America and Africa?
Answers
Answer:
The Glossopteris fossil is found in Australia, Antarctica, India, South Africa, and South America—all the southern continents. Now, the Glossopteris seed is known to be large and bulky and therefore could not have drifted or flown across the oceans to a separate continent
Explanation:
Your welcome
Based on the diagram which statement describes sexual reproduction
Answers
The male father produces sperms, which are male gametes. The female parent produces female gametes known as eggs. The zygote is created when the sperm and egg combine. This represents the sexual reproduction.
Merging the genetic material from two separate people of different sorts (sexes) to create new living things. In the majority of higher organisms, the male creates a small, mobile gamete that travels to the larger, stationary gamete generated by the female in order to fuse with it. This is sexual reproduction.
Following are the various steps that constitute animal sexual reproduction: The male father produces sperms, which are male gametes. The female parent produces female gametes known as eggs. The zygote is created when the sperm and egg combine. Fertilisation is the name given to this process.
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? Question
The article mentions that the difference in the responses of men and women to the research study could be due to
confirmation bias. Use the Internet to look up "confirmation bias." Which of the following statements could support the
view that the difference is due to confirmation bias?
Select all the correct answers.
Many of the men may believe that they are fair and unbiased against women.
Many of the women may already believe that they face biases.
More men than women participated in the study.
The men who participated in the study were younger than the women.
Answers
Many of the men may believe that they are fair and unbiased against women.
Many of the women may already believe that they face biases.
What is confirmation bias ?
The propensity to seek for, understand, favor, and remember information that supports or confirms one's preexisting opinions or values is known as confirmation bias. People exhibit this bias when they choose facts that support their opinions while rejecting those that contradict them or when they interpret ambiguous facts as supporting their preexisting beliefs. Although confirmation bias cannot be completely avoided, it can be controlled, for instance, by critical thinking education and training.
Confirmation bias has been linked to poor decisions in the scientific, organizational, financial, and political spheres. These biases can preserve or reinforce views in the face of contradictory data and contribute to overconfidence in personal opinions.
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Answer:
Many of the men may believe that they are fair and unbiased against women.
Many of the women may already believe that they face biases.
Explanation:
What is derisity?
b
c
is the measure of an oblect per unit volume with regard to the size and force of attraction one type of
Answers
Density is the measure of an object per unit volume (option A).
What is density?Density is the measure of the mass of matter contained by a unit volume.
The formula for density is d = M/V
where;
d is density M is massV is volumeDensity is commonly expressed in units of grams per cubic centimetre. It is a measure of how much stuff an object has in a unit volume (cubic meter or cubic centimeter).
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An ideal gas does not exist.
Answers
Answer:
an ideal gas does not exist except as a conceptual notion, an ideal. Physicists and chemists idealized the behaviour of real gases so that they could explain these phenomena. Under conditions of low pressure and high temperature, all gases behave like real gases, even gases such as UF6 .
Answer:
True
Explanation:
Complete and balance the following half-reaction in acidic solution.
Answers
Answer: Heyo Kenji Here! Here's your answer- N2(g) → NH4+(aq)
Explanation: Hope this helps!
Have a nice day!
- Kenji ^^
when two or more substances have been dissolved, it is called a: a. solvent b. solution c. solute d. none of the above.
Answers
When two or more substances are mixed together and appear as a homogeneous mixture, it is called a solution. A solution is composed of two parts: the solvent and the solute. The solvent is the substance in which the solute is dissolved, and it is typically the component of the solution present in the greatest amount. The solute is the substance that is dissolved in the solvent and is typically present in a smaller amount.
For example, when sugar is dissolved in water, water is the solvent, and sugar is the solute. The sugar molecules are dispersed throughout the water molecules, forming a homogeneous solution. Similarly, when salt is dissolved in water, water is the solvent, and salt is the solute.
Solutions can be made of solids, liquids, or gases, and they can be formed by dissolving a solute in a solvent through processes such as stirring, heating, or shaking. The concentration of a solution can be expressed in various units, such as molarity, molality, percent by mass, or percent by volume.
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Please Help! :)
Calcium carbonate decomposes to form carbon dioxide and calcium oxide:
CaCO3(s) -------> CO2(g) + CaO(s)
How many grams of calcium carbonate will be needed to form 3.45 liters of carbon dioxide at 740 mm Hg and 121 °C?
Answers
Answer:62684
Explanation:
11) Significant figures are important because they indicate
A) the accuracy of a measurement.
B) the number of digits on a calculator.
C) the number of measurements.
D) the precision of a measurement.
E) the accuracy of the conversion factor
Answers
Significant figures are important because they indicate the precision of a measurement.
Precision:
The precision of a substance is defined as the degree to which two or more measurements agree with one another. It is incredibly precise but not always accurate to measure something if you weigh it five times and get 3.2 kg each time. Accuracy is not necessary for precision. You can learn how to be accurate but not precise by looking at the examples below. There are various categories of precision:
Repeatability:
The fluctuation that results from taking multiple measurements under the same circumstances in a short amount of time.
Reproducibility:
The variation occurs when several instruments, operators, and longer time periods are used in the same measurement process.
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This is for Earth/Space Science. Please help me and thank you in advance. I need this quickly please and thank you.
Which statement describes the solar feature shooting off into space labeled C?
1. A brief eruption of intense high-energy radiation from the sun's surface
2. A dark spot appearing from time to time on the sun's surface
3. A stream of glowing gas that shoots out from the sun in an arch
4. An envelope of plasma surrounding the sun
Answers
.What is the final chemical equation from the following intermediate chemical equations?
P4O6(s) → P4(s) + 3O2(g)
P4(s) + 5O2(g) → P4O10(s)
Answers
To obtain the final chemical equation, we need to combine the given intermediate equations in a way that cancels out the common compounds and species.
The intermediate equations are:
P4O6(s) → P4(s) + 3O2(g)
P4(s) + 5O2(g) → P4O10(s)
To combine these equations, we can multiply equation 1 by 2 to balance the number of moles of P4:
2P4O6(s) → 2P4(s) + 6O2(g)
Now, we can add equation 2 to the modified equation 1 to cancel out the common compounds (P4 and O2) and obtain the final balanced chemical equation:
2P4O6(s) + P4(s) + 5O2(g) → 2P4(s) + 6O2(g) + P4O10(s)
Simplifying the equation, we have:
2P4O6(s) + P4(s) + 5O2(g) → 2P4O10(s)
Therefore, the final chemical equation from the given intermediate equations is:
2P4O6(s) + P4(s) + 5O2(g) → 2P4O10(s)
The final balanced chemical equation from the following intermediate chemical equations is 2P4O6(s) + P4(s) + 5O2(g) → 2P4O10(s).
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what a non-renewable resource is, Give 2 examples of non-renewable resources.
Answers
Answer: coal and natural gas
Explanation: because it takes a long time for them to form
Answer:
Non renewable resource is fossil fuels that cannot be replaced such as coal and oil
Explanation:
w 17. Which of the following is the atomic number of a halogen? A. O 10 B. 136 C. 17 D. 13
Answers
Answer:
C. 17
Explanation:
The question above is related to the "Periodic Table of Elements." The Halogen group is located on the right side of the table. It consists of six elements: Fluorine, Chlorine, Bromine, Iodine, Astatine and Tennessine.
The "atomic number" of an element refers to the number of protons that can be found in the element's nucleus. Among the halogens, "Chlorine" is the only one with an atomic number of 17. Halogens do not have an atomic number of 10, 136 and 13.
How many moles of gas are in a 30 liter scuba canister if the temperature
of the canister is 300 K and the pressure is 200 atmospheres?
Answers
Answer: the answer is n= 0.487 mol
Explanation: i took the test and got it right
Which of the following statements on HPLC modes is true? A. Increasing the polarity of the mobile phase decreases the elution time of polar compounds in normal-phase HPLC B. A non-polar stationary phase is used in normal-phase HPLC C. Compounds have a lower attraction to the mobile phase than to the stationary phase in displacement development D. A polar stationary phase is used in reversed-phase HPLC E. More polar compounds elute first in normal-phase HPLC
Answers
The following statements on HPLC modes are true is more polar compounds elute first in normal-phase HPLC (Option E).
The liquid chromatography (HPLC) is a technique in analytical chemistry employed for the separation, identification, and quantification of elements. It is considered a highly sensitive method, and it works by separating the components in a mixture with the assistance of a solvent under high pressure.
There are two modes of HPLC: Reversed-Phase HPLC (RP-HPLC) and Normal-Phase HPLC (NP-HPLC). In RP-HPLC, a nonpolar stationary phase, such as C18, is used, and polar solvents, such as water, are used as mobile phases. Polar stationary phases, such as silica gel, are used in NP-HPLC, while nonpolar solvents, such as hexane, are used as mobile phases.
More polar compounds have a greater affinity for the polar stationary phase than less polar compounds, which have a higher affinity for the nonpolar mobile phase in NP-HPLC. As a result, less polar compounds elute first in normal-phase HPLC.
Thus, the correct option is E.
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dihydroxyacetone is a(n) , while glyceraldehyde is a(n) . please choose the correct answer from the following choices, and then select the submit answer button. answer choices ketose; aldose
Answers
Dihydroxyacetone is a ketose, while glyceraldehyde is an aldose.
Aldoses are carbohydrates that contain an aldehyde group (carbonyl group on a terminal carbon atom). This means that, of the two, glyceraldehyde is the aldose (more precisely, an aldotriose, because it has 3 carbon atoms) as glyceraldehyde molecule has an aldehyde group.
On the other hand, ketoses are carbohydrates that contain a keto group (carbonyl group that is not located on a terminal carbon atom). This means that dihydroxyacetone is the ketose (more precisely, a ketotriose, because it also has 3 carbon atoms), as the acetone molecule has a keto group.
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An unknown element X has the following isotopes: 64x (49. 00%
abundant), 66x (28. 00% abundant), 68Xi(23. 00% abundant). What is
the average atomic mass in amu of X?
Answers
Each isotope's relative importance is indicated by its percent abundance. Element X has an average relative atomic mass of 220.4.
How can you determine which isotope is more prevalent?Compare the provided isotopes to the weighted average on the periodic table to identify the isotopic form of an element that is the most prevalent. The three hydrogen isotopes, for instance, are H-1, H-2, and H-3. Around 1.008 amu is the weighted average of hydrogen's atomic mass ( look again at the periodic table).
How many atoms does X have?This details are not provided here. Therefore, we shall use the protons' number as the atomic number. The correct response is therefore 17.
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3.2 moles of CO 2 is how many atoms of CO2