The following balanced equation shows the decomposition of water (H2O). According to the equation, how many oxygen atoms are in the reactants? 2 H2O 2H2 + O2
Answers
Answer: There are 2 oxygen atoms on the reactant side.
Explanation:
Every balanced chemical equation follows law of conservation of mass.
This law states that mass can neither be created nor be destroyed, but it can only be transformed from one form to another form.
This law also means that total number of individual atoms on the reactant side will always be equal to the total number of individual atoms on the product side.
The given balanced chemical equation follows:
On reactant side:
Number of hydrogen atoms = 4
Number of oxygen atoms = 2
On product side:
Number of hydrogen atoms = 4
Number of oxygen atoms = 2
Hence, the number of oxygen atoms on the reactant side is equal to 2.
The following balanced equation, 2H2O = 2H2 +O2, shows the decomposition of water (H2O). According to the equation, there are two oxygen atoms in the reactants and another two oxygen atoms in the product side.
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Give the formula for the alkane containing 100 hydrogens.
Answers
Answer:
Explanation:
The atomic number of zinc is 30, which means that the neutral atom has equal numbers of protons and electrons, so a neutral atom of zinc would have 30 electrons.
The electron configuration of a neutral zinc atom is 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
4s
2
.
The Zn
2+
ion has lost two electrons, which leaves it with 30 protons and 28 electrons.
The electron configuration of Zn
2+
is 1s
2
2s
2
2p
6
3s
2
3p
6
3d
10
.
Answers
b. H₂O
c. NH₃
d. NaCl
e. CO₂
Can anyone explain this one?
Answers
H2O: polar bonds, but there is a angle between 2 H-O bonds. so it's a polar molecule
NH3: polar bonds, but it's a stereochemical structure, like a pyramid with triangle base, N is the vertex. polar molecule.
NaCl: polar bond, polar molecule.(ion bond)
CO2: 2 O atoms are at two sides of C atom horizonally. giving CO2 a symmerical structure. it's nonpolar molecule with 2 polar bonds.
Final answer:
Carbon dioxide (CO₂) is a molecule with polar bonds but is considered nonpolar due to its linear shape.
Explanation:
In order to determine whether a molecule is polar or nonpolar, we must consider both the polarity of the individual bonds and the molecular geometry. A molecule with polar bonds can be nonpolar if the bond polarities cancel each other out due to the overall molecular shape.
Out of the given options, the molecule that has polar bonds but is nonpolar is CO₂. Carbon dioxide has two polar bonds between carbon and oxygen, but the molecule has a linear shape, which results in the bond polarities canceling each other out, making the molecule nonpolar.
Learn more about Polarity of Molecules here:
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(2) increases
(3) remains the same
Answers
Answer:
Hence the correct answer is remains the same
Explanation:
As a Ca atom undergoes oxidation to Ca2+,as follows:
Ca --- Ca 2+ + 2e-
In the process of oxidation calcium loss 2 electron only there is no change in the number of protons as well neutrons therefore there is no change in the number of neutrons in its nucleus
Hence the correct answer is remains the same
Oxidation:
Oxidation is a process in which either 1 or all following changes occurs:
1. Gaining of oxygen atoms
2. Loss of electrons
3. Loss of hydrogen atom.
4. Increasing oxidation number.
Reduction:
Reduction is a process in which either 1 or all following changes occurs:
1. Loss of oxygen atoms
2. Gaining of electrons
3. Gaining of hydrogen atom.
4. Decreasing oxidation number.
Answers
Answer:
Atomic models have similarities and differences
Explanation:
Hi
Dalton proposes an indivisible model of the atom.
Thomson proposes an atom formed by negative electric charges (electrons) embedded in a positive mass.
successes with your homework
Answers
Answer:- A. is not the correct formula.
Explanations:- Charge for Ba is +2 and charge for O is -2, Here the charges are in equal and opposite so their ratio is 1:1 and hence the formula must be BaO and not .
Rest of the formulas are correct as charge for Ca is +2 and charge for N is -3 . On criss cross we get the formula .
Charge for K is +1 and charge for Cl is -1 and so KCl is correct.
Charge for Li is +1 and that for S is -2. On criss cross we get the formula .