Which ion is not an oxyanion? NO− SO4 2− CN− CO3 2−
Answers
Answer:
CN⁻
Explanation:
Oxyanion:
Oxyanion is the anion that have oxygen atom.
General formula:
The general formula for oxyanion is AₓOₓ⁻².
A = symbol of element combining with oxygen.
O = oxygen atom
z,x, = integers
a) = NO⁻
Its is an oxyanion because oxygen atom is present with nitrogen.
b) = SO₄⁻
It is an oxyanion because oxygen atom is present.
c) = CN⁻
This is not an oxyanion because there is no oxygen atom present.
d= CO₃²⁻
It is also an oxyanion because of presence of oxygen atom.
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(2) the mole ratios of the substances in the reaction
(3) the total number of electrons in the reaction
(4) the total number of elements in the reaction
Answers
The coefficients in a balanced chemical equation represent: (2) the mole ratios of the substances in the reaction.
What is a balanced chemical equation?
A balanced chemical equation refers to an equation in which the number of atoms present on the reactant side (left) is the same or equal to the number of atoms present on the product side (right) of a chemical equation.
What is a coefficient?
A coefficient can be defined as a number that is placed in front of a chemical symbol (formula) of an element or chemical compound in a chemical equation.
- In a balanced chemical equation, the coefficients represent the mole ratios of the substances (element or chemical compound) in a chemical reaction.
Read more on coefficient here: brainly.com/question/8637549
(2) the mole ratios of the substances in the reaction
(3) the total number of electrons in the reaction
(4) the total number of elements in the reaction
Answers
Answer:
blood sugar blood pressure and diet
Answers
The difference between renewable and non-renewable resources is that renewable resources are being made faster, and we have an infinite supply of them, while non-renewable resources take longer to make(like millions of billions of years) and therefore run out easily.
Renewable resources are like solar, hydro, and wind energy. They are basically impossible to get rid of.
Non-renewable resources are like coal. It takes a long time to make and is nearly run out.
The difference is that renewable resources can be remade, on the other hand non renewable cannot be remade
Answers
Answer:
Liquefied petroleum gas
Answer:
Liquefied petroleum gas or liquid petroleum gas(LPG or LP gas),
Answers
Answer: The correct answer is polar, tetrahedral and non-polar.
Explanation:
It is given a compound which is silicon tetrahydride having formula
The electronegativities of silicon and hydrogen are 1.9 and 2.1 respectively.
Difference in electronegativity = 2.1 - 1.9 = 0.2
From above, some difference in the electronegativities of the atoms is there. This means that bond polarity of this molecule is polar. If the difference would have been 0, the bond polarity of the molecule is taken as non-polar.
- To determine the molecular shape of the given molecule, we calculate the hybridization of this molecule. The equation used for this is:
where,
V = number of valence electrons present in central atom i.e. Silicon = 4
N = number of monovalent atoms bonded to central atom = 4
C = charge of cation = 0
A = charge of anion = 0
Putting values in above equation, we get:
As, the total number of electron pairs is 4, this means that the hybridization of this molecule will be and the molecular shape will be tetrahedral.
- The net dipole moment of the molecule is 0 because of the symmetry of the molecule. Thus, the molecule is considered as a non-polar molecule.
Hence, the correct answer is polar, tetrahedral and non-polar.
B. Composition of a substance is the same.
C. A completely new substance is formed.
D. An easily reversible process has taken place.