which element would be most likely to lose electrons in chemical bond
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When the following redox equation is balanced with smallest whole number coefficients, the coefficient for nitrogen dioxide will be _____. I2(s) hno3(aq) ⟶ hio3(aq) no2(g) h2o(l)
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In a redox reaction, electron could be lost or gained. The coefficients in the balanced redox reaction are; 1/2, 5, 1, 5, 2, 1.
What is a redox reaction equation?A redox reaction equation shows the species that were oxidized or reduced in a redox reaction. In this case, we are asked for the coefficients in a balanced redox reaction equation.
We must recall that five electrons were lost/gained in the process hence the balanced reaction equation is;
1/2I2 + 5HNO3 -----> IO3^- + 5NO2 + 2H2O + H^+
The coefficients in the balanced equation therefore are; 1/2, 5, 1, 5, 2, 1.
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The following redox equation is balanced with the smallest whole number coefficients, the coefficient for nitrogen dioxide will be 10.
What are redox reactions?
In redox reaction, there is transfer of electrons between the species of the reactions.
The given redox reaction is
[tex]\rm I2 (s) + HNO_3 (aq) -- > HIO_3 (aq) + NO_2 (g) + H_2O[/tex]
To find coefficient of the compounds of the reaction, there are coefficient calculator present.
Thus, the coefficient for nitrogen dioxide will be 10.
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1. Illustrate and describe the sequence in which ten electrons occupy the five
orbitals related to an atom's d sublevel.
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(PLEASE ANSWER!)
2H20 + 2Na --> 2NaOH + H2
which of these is a reactant in this chemical reaction?
A. hydrogen
B. nitrogen
C. oxygen
D. water
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Answer:
Water (H2O) and Sodium (Na) are reactants.
Explanation:
2H2O+2Na......2NaOH+H2
In the above reaction the water (H2O) and sodium (Na) are reactants and sodium hydroxide (NaOH) and hydrogen are products.
And this is the single displacement reaction.
What is the temperature of the flame in degrees Celsius?
You measure the flame of a candle and get a reading of 1,376.06 K. This value is equal to
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Answer:
- Deep red fire is about 600-800° Celsius
- Answer: {1102.91}
Given: K= °C + 273.15
K = 1,376.06
Since you’re trying to find C (Celsius) you want to get C by itself in the problem. So you subtract 273.15 from that side. Anything you do to one side of the equal sign you have to do to the other side, so also subtract 273.15 from K (1,376.06).
1,376.06 - 273.15 = {1102.91°C}
Explain why the amino group of p-aminobenzoic acid does not participate in the reaction
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This is because amino group of p-aminobenzoic acid is an aniline and is less electrophilic than an alkyl amine.
What is an Aniline?This is an aromatic amine which consists of a phenyl group attached to an amino group.
The amino group of p-aminobenzoic acid being an aniline makes it less electrophilic which is why an alkyl amine participates in the reaction instead.
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The amino group of p-aminobenzoic acid does not participate in the reaction as this is an aniline and is less electrophilic than an alkyl amine.
What is an Aniline?Aniline is an aromatic amine molecule in which phenyl group is attached with an amino group.
The amino group present in the p-aminobenzoic acid behave as an aniline as a result of which it becomes less electrophilic in nature and this is the reason why an alkyl amine participates in the reaction instead of the p-aminobenzoic acid.
Hence amino group of p-aminobenzoic acid is less electrophilic in nature and that's why not participate in the reaction.
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If we have 100ml of water at 0 degrees Celsius and it all freezes, how much energy did the water lose? Using the formula Hfus = Q/n
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The amount of heat energy lost by the 100 mL of water when it all freezes is 33400 J
Data obtained from the question Volume of water = 100 mL Heat (Q) =? How to determine mass of water Volume of water = 100 mL Density of water = 1 g/mL Mass of water =?
Mass = Density ×Volume
Mass of water = 1 × 100
Mass of water = 100 g
How to determine the heat Mass of water = 100 gHeat of fusion (ΔHf) = 334 J/g Heat (Q) =?Q = m × ΔHf
Q = 100 × 334
Q = 33400 J
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After completing their tests, the students make recommendations on how to increase the final temperature of the
mixture
Based on the data in the table, select if the proposed improvements would increase or decrease the final
emperature of the mixture. Place a check mark in the appropriate box in each row.
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Answer: test two
Explanation: it sits in between both
Question 6 of 10
Which of these accurately describes a difference between nuclear energy and
fossil fuel?
O A. In nuclear fuel reactions, heat is released that is used to do work.
O B. Nuclear fuel has a higher energy density than fossil fuels.
O C. Fossil fuels have a higher energy density than nuclear fuel.
O D. In fossil fuel reactions, heat is released that is used to do work.
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Answer:
b. nuclear fuel has a higher energy density than fossil fuels.
Explanation:
Nuclear fuel is a quantity of energy measured in joules; therefore, it has the same units as electrical and mechanical energy.
How many molecules are in 12.8 moles of CO2?
A. 563 molecules
B. 0.291 molecules
C. 2.13 x 10^{-23} molecules
D. 7.71 x 10^{24} molecules
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Answer: D. 7.71 x 10^24
Explanation:
12.8 moles CO2 (6.02 * 10^23 molecules / 1 mol) = 7.7 * 10^24 molecules :)
Which of the following was not an invention of the Han period?
A. Porcelain
B. Wheelbarrow
C. Paper
D. Silk
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Answer:
Silk! All the others were inventions of the Han period.
Explanation:
Silk fabric was invented in Ancient China. Legend has it that the process for making silk cloth was first invented by the wife of the Yellow Emperor, Leizu, around the year 2696 BC.
- profparis
What is the Electronegativity difference of C and S?
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Answer:
S 2.6 [2.58] & C is 2.6 [2.55]
Explanation:
What do the neural pathways for taste, hearing, sight, and touch have in common
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Answer:
All of the signals pass through the thalamus
Explanation:
What is the molarity of a solution in which 25g NaCl in a 2.00 L solution?
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Mass of sodium :- 23 grams
Mass of Chlorine :- 35.5 grams
Mass of NaCl :- 58.5 grams
mass given :- 25 grams
moles :- 0.432 ( given mass/ ionic mass)
[tex]molarity = \frac{moles}{vol} \\ molarity = \frac{0.432}{2} \\ molarity = 0.216 \: mole{l}^{ - 1} or \: molar[/tex]
Hello people ~
Water cannot be used as a fire extinguisher to put out –
A. Burning charcoal
B. Burning cloth
C. Burning oil
D. Burning wood
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Answer:
C. Burning oil
Explanation:
Water cannot be used as a fire extinguisher to extinguish the flames of burning oils such as gasoline, petrol, or diesel. Because oil is lighter than water, it floats on top of it and cremates. Furthermore, as the water spreads and carries the oil with it, the fire spreads over a larger area.
I am joyous to assist you at any time.
Answer:
Burning oil
Explanation:
oil has lower density than waterAs water has higher density it will sink down and oil will be over it .So it can't control the oil related fireCan you store cuso4 in an aluminum container? explain your reasoning
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We can store the copper sulphate solution in alumiun container, if cover on alumiun is present.
Can you store cuso4 in an aluminum container?Aluminium is more reactive than copper so the Aluminium will displace copper sulphate from its solution by reacting with it but if there is cover on the aluminium then the alumium can't react with copper.
So we can store the copper sulphate solution in alumiun container.
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No, we cannot store CuSO₄ in an aluminum container because aluminum will displace the copper present in the solution.
Why do different chemicals require different containers?Different chemicals are put in different containers, usually glass, plastic, dark container, or light container.
Chemicals element are reactive to different substances and to each other.
That's why they are put in separate and different types of containers according to their reactivity.
Thus, No, we cannot store CuSO₄ in an aluminum container because aluminum will displace the copper present in the solution.
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Use Figure 2 to describe which type of microscope the scientists should use to study the features of the hairlike organelles. Explain one possible function for these organelles based on where the organelles are located in the cell model in Figure 1
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The Figure is not found here but the tiny hairlike organelles are also referred to as cilia.
What are cilia?Cilia are a special type of hairlike organelles capable of covering the surface of cells in many different organisms.
Cilia are found in different eukaryotic organisms ranging from unicellular protists to mammals (epithelial tissues).
The function of cilia is to produce motion (movement) of the cell in which these structures are found.
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A chemical reaction needs to occur at a certain temperature, but one liquid is coming from a reactor at a much hotter temperature. what might be used to cool the liquid? question 3 options: cooling pool steam turbine heat exchanger boiler
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The medium that might be used to cool the hot liquid coming from a reactor is : ( C ) Heat exchanger
Function of the heat exchangerHeat exchanger is used for the transfer of heat between liquids to be used in a chemical reaction, It can be used for both Cooling and heating to achieve the desired temperature.
The liquid coming from a reactor which posses a very high temperature will be passed through the heat exchanger so that its temperature will attain the required temperature for the experiment.
Hence we can conclude that The medium that might be used to cool the hot liquid coming from a reactor is Heat exchanger.
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Tear off a small, flat sheet of waxed paper. Use the pipette to dispense a drop of water on the waxed paper. Now, dry the pipette, and use it to dispense a drop of oil on the waxed paper next to the water drop. Be sure the two drops are not touching. Compare and describe the appearance of both drops.
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Answer:
Explanation:
When comparing the drops of oil and water, one thing I noticed was the shape. The water drop was more defined, whereas the drop of oil began to spread and was much flatter. This may be due to the waxy material, and how both oil and water react to the wax.
The distance between a carbon atom and an oxygen atom in the co molecule is how far from the carbon atom is the center of mass of the molecule?
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Answer:
1.12x10-10 or 0.63 ewan
Explanation:
Correct option is C)
The distance of centre of mass from carbon atom is,
xcm=m1+m2m1x1+m2x2
=12+1612×0+16×1.1
=0.63A˚
Thus, the centre of mass is 0.63A˚ from carbon atom.
The distance between a carbon atom and an oxygen atom in the co molecule is 0.63
What is the distance?Distance is the measurement of the farness of two objects from each other.
The distance between the molecules can be calculated by the given formula
[tex]xcm = m_1+m_2m_1\times 1+m_2 \times 2[/tex]
Putting the values in the equation
[tex]xcm = 12+1612 \times 0+16 \times 1.1 = 0.63 A^\circ[/tex]
Thus, the distance between a carbon atom and an oxygen atom in the co molecule is 0.63
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Hello people ~
Which of the following reactions can also be termed as thermal decomposition reaction?
(a) Combination Reaction
(b) Decomposition Reaction
(c) Displacement reaction
(d) Double displacement reaction
Answers
Answer:
Decomposition reaction
Explanation:
When a single reactant is decomposed into two or more products that reaction is called decomposition reaction.
Thermal decomposition usually refers to exothermic reactionA lots of amount of heat is released in thisOption B is correct
How does this visual help to explain hazards from volcanoes that can hurt people even when they are not erupting?
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Answer:
The visual seems to be showcasing an erupting volcano, so I don't believe the two are related.
Explanation:
What is the minimum quantity of energy that must be possessed by the reactants for a reaction to occur?
Group of answer choices
Collision model
Thermal energy
Catalyst
Activation energy
Answers
Answer:
Activation energy :)
Explanation:
The activation energy starts the reaction! Without it, we would not find out the solution!
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Ancient
grew to 40 m, but are smaller today.
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Answer:
Club mosses
Explanation:
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A 1.775g sample mixture of potassium hydrogen carbonate is decomposed by heating. if the mass loss is 0.275g what is the percentage of khco3
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A 1.775g sample mixture of KHCO₃ is decomposed by heating. if the mass loss is 0.275g, the mass percentage of KHCO₃ is 70.4%.
What is a decomposition reaction?A decomposition reaction can be defined as a chemical reaction in which one reactant breaks down into two or more products.
Step 1: Write the balanced equation for the decomposition of KHCO₃.2 KHCO₃(s) → K₂CO₃(s) + CO₂(g) + H₂O(l)
The mass loss of 0.275 g is due to the gaseous CO₂ that escapes the sample.
Step 2: Calculate the mass of KHCO₃ that formed 0.275 g of CO₂.In the balanced equation, the mass ratio of KHCO₃ to CO₂ is 200.24:44.01.
0.275 g CO₂ × 200.24 g KHCO₃/44.01 g CO₂ = 1.25 g KHCO₃
Step 3: Calculate the mass percentage of KHCO₃ in the sample.There are 1.25 g of KHCO₃ in the 1.775 g sample.
%KHCO₃ = 1.25 g/1.775 g × 100% = 70.4%
A 1.775g sample mixture of KHCO₃ is decomposed by heating. if the mass loss is 0.275g, the mass percentage of KHCO₃ is 70.4%.
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A world with both liquid water on its surface and carbon dioxide in its atmosphere is unstable because.
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hello people~
Polyethylene terephthalate belongs to which class of synthetic polymer?
A. None of these
B. Polyolefin
C. Nylon
D. Polyester
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Answer:
Polyester
Explanation:
Polyethylene terephthalate or shortly known as PET its a clean and strong polyesterIt is used in packaginghelp Light reflecting from the aluminum coating on a CD ____________ and then interferes.
A. Diffracts
B. Refracts
C. Vibration
D. Reflection
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Answer:
Reflection
Hope it will help you
Strong bases are ____________ of group ____________ metals (ex. ____________ ) or larger group ____________ metals (ex. ____________ ), or oxides of the same metals.
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The strong bases are hydroxides of group 1 and 2 metals (ex. Sodium, Potassium) or larger group transition metals (Copper, Iron), or oxides of the same metals.
Strong bases formulationIt follows from structure of strong bases that they are composed of highly electropositive metals of groups 1 and 2 and the hydroxide ion.
Additionally, transition metals may also form bases with the hydroxide ion or oxides of this transition metals.
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In addition to not causing damage to the sample, what is another advantage of using a microspectrophotometer to analyze fibers?
The fiber’s spectra can also be polarized.
The sample can be quite small.
The sample can originate from a known source.
The fiber sample’s dye can be extracted.
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Another advantage of advantage of using a microspectrophotometer to analyze fibers asides not causing damage to the sample is that the sample can be quite small.
What is a microspectrophotometer?Microspectrophotometry is a biological technique used to measure the absorption or transmission spectrum of a solid or liquid material in either transmitted or reflected light.
Microspectrophotometry can also measure the emission of light by a sample, which is usually small as the micro implies.
One advantage of microspectrophotometry is that the sample does not get damaged. However,
However, another advantage of advantage of using a microspectrophotometer to analyze fibers asides not causing damage to the sample is that the sample can be quite small.
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what describes the equivalence point on a graph of pH versus the amount of titrant added to a solution
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Answer:
Titrant and analyte is a pair of acid and base. ... Equivalence point: point in titration at which the amount of titrant added is just enough to completely neutralize the analyte solution. At the equivalence point in an acid-base titration, moles of base = moles of acid and the solution only contains salt and water.
Explanation: