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Consider the following intermediate chemical equations.
2 equations. First: 2 upper N a (s) plus upper C l subscript 2 (g) right arrow 2 upper N a upper C l (s). Second: 2 upper N a subscript 2 upper O (s) right arrow 4 upper N a (s) plus upper O subscript 2 (g).
In the final chemical equation, NaCl and O subscript 2 are the products that are formed through the reaction between Na subscript 2 O and Cl subscript 2. Before you can add these intermediate chemical equations, you need to alter them by
A.) multiplying the second equation by 2.
B.) multiplying the first equation by 2.
C.) multiplying the first equation by (1/2).
D.) multiplying the second equation by (1/4).
Answers
Answer:
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B.) multiplying the first equation by 2.
Explanation:
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Before adding the intermediate chemical equations to get the final products first we have to multiplying the first equation by 2.
What is the stoichiometry?Stoiciometry of any chemical reaction gives idea about the amount of species present before and after the completion of the reaction.
Given first intermediate chemical equation is:
2Na(s) + Cl₂ → 2NaCl(s)
Second intermediate chemical equation is:
2Na₂O(s) → 4Na(s) + O₂(g)
Final products of the given chemical reactions are NaCl and O₂ which are formed by the below given balanced chemical reaction:
2Na₂O + Cl₂ → 4NaCl + O₂
To get the desire balance chemical equation before adding the given intermediate equation, first we have to multiply the first equation by 2.
Hence option (B) is correct.
To know more about stoichiometry, visit the below link:
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Related Questions
i just need the last one
Answers
Why does warm soda go flat faster than chilled soda?
A. Gas molecules stay dissolved in warm soda.
B. Gas molecules move slower in warm soda.
C. Gas molecules move faster in warm soda.
D. Gas molecules cannot escape in warm soda.
E. Gas molecules stay trapped with the solvent in warm soda.
Answers
Answer:
My best guess is c
Explanation:
Answer:
C for plato
Explanation:
Someone thought there was water in Beaker C. He drank some and quickly spat out.He said that it was salty. Explain why this happened.
Answers
Answer:
He assumed wrongly
Explanation:
It happened this way because the person assumed wrongly.
Most other compounds have the same physical appearance as water especially when in liquid form.
This can be a very tricky one in the laboratory. The sense of taste is not the best way to fathom what a particular compound is made up of. This is the reason why this student or person faced this sort of problem. Water has different properties that can be tested for using simple techniques in the laboratory.An element that is malleable and a good conductor of heat and electricity could have an atomic number of
Answers
Answer:
Copper (atomic number 29)
Explanation:
Copper is a element that is malleable and a good conductor of heat and electricity.
The plant on the left is growing more because it has been receiving more water
Observation or inference
Answers
Answer:
am not sure i understand but i think it got more chlorophyll
How many valence electrons are there in Copper(ll) and copper(lll).
Answers
Answer:
Copper typically forms a bluish green solution. Copper (Cu) has two valences Cu I (cuprous) has one valence electron and Cu II (cupric) has two valence electrons.
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Explanation:
Which of the sets of elements are not in order of increasing force of attraction on the outermost electron in atoms of that element?
Ba < Sr < Ca
Al < P < Cl
F < Cl < Br
Mo < Pd < Sn
Answers
Answer:
The set of elements that are not arranged in the order of increasing ionization energy is Mo < Pd < Sn
Explanation:
The force of attraction on the outermost electron of an element can be described by the ionization energy of the element which decreases down a group and increases across a period
1) The given elements Ba, Sr, Ca, are group 2 elements arranged in the order from bottom up, which gives an increasing ionization energy, therefore;
Ba < Sr < Ca is arranged in increasing ionization energy, and therefore, increasing force of attraction of the outermost electron in atoms of the elements
Similarly, Al < P < Cl and Mo < Pd < Sn, are arranged in order of increasing ionization energy
However F < Cl < Br which are arranged from top down of elements in period 17 are arranged in the order of decreasing ionization energy, and therefore, decreasing force of attraction of the outermost electron in atoms of the elements.
The elements that are not arranged in their increasing force of attraction base on the outermost electron present in their atoms is D:
Mo < Pd < Sn.
Ionization energy of an element usually increase when moving along the period and decreases down a group and thus explains the force of attraction on the outermost electron.Option A are arranged in from down to up of group 2, which means they are in increasing order of ionization energy, same thing with option B, C. But option D, doesn't follow the arrangements hence, the correct answer.Therefore , option D is correct.
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In the ground state atoms of the elements in group 15 of the periodic table all have the same number of
Answers
Answer:
valence electrons
Explanation:
Salt water is made of water (H2O) and NaCl (salt). Which of these substances is the solute
Answers
Answer:
[tex]NaCl[/tex] (salt) is the solute
Water [tex]H_20[/tex] is the solvent
Explanation:
A solute is the substance to be dissolved in a solvent to make a solution.
In The Lord of the Rings, Frodo and Sam use a rope to rappel down a cliff. The rope was 30 ells long. How high was the cliff in meters if the rope reached the bottom?
Answers
Answer:
324 meters
Explanation:
I don't really have an explanation
Calculate the density of a metal that has a mass of 100 grams and a volume of 350. mL.
Answers
Answer:
0.28571428571
Explanation:
m/v = density
Fill in the blank questions usually require
a. One key word
b. A list of vocabulary words
in the answer.
C. Complete sentences
d. None of these
Please select the best answer from the choices provided
Ο Α
B
С
D
Answers
The answer to this question is that: In fill in the blanks, there must be one keyword rather than a full sentence.
What should be filled in fill in the blanks?A Fill in the Blank inquiry comprises of an expression, sentence, or section with a clear space where an understudy gives the missing word or words.
In most cases, it should be filled with one keyword.
Thus, option A is correct.
Find more ifnormation about Keyword here:
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1) Write the ionic compound formulas for the element sodium and all the elements in group 6A. Example: Sodium + Oxygen=Na2O
2) Write the ionic compound formulas for the element aluminum and all the elements in group 7A. Example: Aluminum + Fluorine=AlF3
3) Write the ionic compound formulas for the element magnesium and all the elements in group 5A. Example: Magnesium + Nitrogen=Mg3N2
Answers
Answer:
See explanation
Explanation:
1) Group 6A elements include; O, S, Se, Te, Po
Na2O, Na2S, Na2Se, Na2Te, Na2Po
2) Group 7A elements include; F, Cl, Br, I, At
AlF3, AlCl3, AlBr3, AlI3, AlAt3
3) Group 5A elements are;
N, P, As, Sb,Bi
Mg3N2, Mg3P2, Mg3As2, Mg3Sb2, Mg3Bi2
Propanoic acid fromula
Answers
Answer:
C₃H₆O₂
Explanation:
Propionic acid is a colorless liquid with a sharp rancid odor. Produces irritating vapor. (USCG, 1999)
What is a feed back loop?
Answers
Answer:A feedback loop is a process in which the outputs of a system are circled back and used as inputs. In business, this refers to the process of using customer or employee feedback (the outputs of a service or product), to create a better product or workplace
Explanation: Becuz ur mom
true or false
the mass of an object changes when it goes through a physical or chemical change
Answers
Answer:
True.
But it only changes in physical change.
How?
Explanation:
The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance.
In a physical change, a substance's physical properties may change.
A chemical change is a permanent change. A Physical change affects only physical properties i.e. shape, size, etc. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc.
Hope this helps!
If a car travels 600m in 40 seconds how fast is it going?
Answers
Answer:
S = d/t s = 400m/ 20 sec = 20m/s
Explanation:
what event typically causes upwelling?
Answers
Answer:
Conditions are optimal for upwelling along the coast when winds blow along the shore. Winds blowing across the ocean surface push water away. Water then rises up from beneath the surface to replace the water that was pushed away. This process is known as “upwelling.”
Explanation:
Atoms are like letters of the alphabet and the compounds are like they make are like words this sentence:
Ed helper question
Answers
Explanation:
This is very correct atoms can be viewed as elements and compounds the words that are made from them.
Elements are distinct substances that cannot be split up into simpler substances. Such substances are only made up of one atom. This can pictured as alphabets also. They are the fundamental units by which words are formed.Compounds are substances composed of two or more kinds of atoms joined together in a definite grouping. They are like words.
For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.(A) C-C(B) C?C...... (A,B)(C) C?O(D) C-O...... (C,D)bondlengthtitle.gif The length of a covalent bond depends upon the size of the atoms and the bond order.For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.(A) P-Cl(B) Si-Cl...... (A,B)(C) P-I(D) H-I...... (C,D)bondlengthtitle.gif The length of a covalent bond depends upon the size of the atoms and the bond order.For each pair of covalently bonded atoms, choose the one expected to have the shortest bond length.(A) Cl-I(B) I-I...... (A,B)(C) P-Br(D) P-Cl...... (C,D)
Answers
Answer:
See explanation
Explanation:
In the section A,B
C triple bond O has a higher bond energy. A triple bond is shorter and more difficult to break hence they have a higher bond energy.
For the same reason in the C,D section; C triple bond N has a higher bond energy.
In the next section, the higher the bond order the shorter the bond. Hence C triple bond C is the shortest in the A,B section while C triple bond O is the shortest in the C,D section. Both have a bond order of 3.
In the A,B section; I is larger than Br hence H-Br has the shortest bond length.
In the C,D section; Br is larger than Cl hence P-Cl has the shortest bond length.
A student found the mass of an object to be 5.5 g. The actual mass of the object is 5.3 g. What is the percent error in the measurement?
Answers
Answer: 3.6%
5.5 - 5.3 and divide it by 5.5. Then multiply this by 100
Explanation:
This will get you 3.6%
The percent error in the measurement is 3.774%
How do you calculate the percent error?
Subtract one cost from the other: 2.sixty eight - 2.70 = -zero.02.relying on what you need, you may discard any poor sign (take the absolute value): 0.02. that is the mistake.Divide the mistake by using the proper cost:zero.02/2.70 = zero.0074074.Multiply this fee by 100% to attain the percentage of mistakes:What's an example of a percent error?
For an instance, let's assume you guessed that there have been 230 gumballs within the picture, however, there were simply 311 gumballs. The distinction between your wager (230) and the actual wide variety (311) in the evaluation of the actual variety (311) expressed as a percentage is the percentage error.
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i think im right but im not sure question 12 i’m timed thxxx
Answers
Answer:
Your answer is correct.
Mr. Johnson’s dinner table is 60 inches wide. How wide is his table in feet?
Answers
Answer:
his table is 5 feet wide
12 inches = 1 foot
60 inches = 5 feet
60 / 12 in is 5 feet
what type of reaction is CO2 + H2O–H2CO3?
Answers
The process by which CO2 gas releases heat energy to become dry ice is called :
evaporation
freezing
deposition
sublimation
Answers
i believe its deposition
How many p-orbitals are occupied in a Ar atom?
Answers
Answer:
6
Explanation:
p orbital can hold up to six electron. Argon electron configuration will be 1s²2s²2p⁶3s²3p⁶
Explanation:
Quantum mechanics stipulates that for each energy level, the p sub shell contains 3 orbitals, px, py, and pz. These orbitals are oriented in alignment with x, y, and axis.
Convert 5.00 g CaC, to moles CaC,
Answers
HELP! ONLY HAVE & MINUTES LEFT!
why does "Characteristics of objects in the solar system" supports nebular theory
Answers
! !!
A portion of the periodic table is shown below:
Which element has the electron configuration 1s22s22p6?
Argon (Ar)
Chlorine (Cl)
Fluorine (F)
Neon (Ne)
Answers
Answer:
here is your answer
Explanation:
the fourth one Neon (Ne) he the configuration given above .
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Answer:
Neon (Ne)
Explanation:
2+2+6=10
Write with example of any three changes in the state of matter in daily life
Answers
Answer:
just wait 3 minutes ill tell you the answer cause its in my book
Explanation: