pa answer po need ko 4 sentence
Answer: Elements are pure substances which are composed of only one type of atom. Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions.
consists of 2 Cl atoms.. although its the same type. So it is an element.
Water () consists of 2 different atoms. (hydrogen and oxygen) hence is a compound.
the overall numbers of atoms only
both the overall types and numbers of atoms
neither the overall types or numbers of atoms
Both the overall types and numbers of atoms stay the same during chemical reactions.
Answer: Two of them are balanced and two of them are unbalanced.
Explanation:
A balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on the product side. These equations follow law of conservation of mass.
An unbalanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is not equal to the total number of individual atoms on the product side. These equations does not follow law of conservation of mass.
For the given chemical equations:
Equation 1:
As, number of carbon, nitrogen and oxygen atoms on the reactant side is equal to the number of carbon, nitrogen and oxygen atoms on the product side. Thus, this is a balanced chemical equation.
Equation 2:
As, number of oxygen atoms on the reactant side is not equal to the number of oxygen atoms on the product side. Thus, this is not a balanced chemical equation.
Equation 3:
As, number of carbon, nitrogen and oxygen atoms on the reactant side is equal to the number of carbon, nitrogen and oxygen atoms on the product side. Thus, this is a balanced chemical equation.
Equation 4:
As, number of oxygen and copper atoms on the reactant side is not equal to the number of oxygen and copper atoms on the product side. Thus, this is not a balanced chemical equation
Hence, two of the equations are balanced and two are unbalanced.
1,2,4 are not balanced, 3 is balanced
Answer:
The gas above it or boiling
Explanation:
Answer:
i think it is nucleic
Explanation:
because that is what i think