When lithium hydroxide pellets are added to a solution ofsulfuric acid, lithium sulfate and water are formed. The balanced chemical reaction is 2LiOH + H₂SO₄ → Li₂SO₄ + 2H₂O.
A chemical equation is said to be balanced if the quantity of each kind of atom in the reaction is the same on both the reactant and product sides. In a balanced chemical equation, the mass and the change are both equal.
Following the rule of conservation of mass requires that a chemical equation be balanced. The balance of a chemical equation is disregarded by the rule of conservation of mass. The law states that a chemical process cannot produce or destroy matter.
When lithium hydroxide pellets are added to a solution of sulfuric acid, lithium sulfate and water are produced.
Thus, The balanced chemical reaction is 2LiOH + H₂SO₄ → Li₂SO₄ + 2H₂O.
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The answer is D. Heating the air in the can reduces the air pressure in the can. When the can is inverted in a pan with cold water, the can collapses inwards. This is because the cold water cooled the air around the outside of the can. Cold air has a higher pressure that hot air because it’s denser. Became. The higher air pressure outside presses on the can walls and force them inwards.
Answer: The isotope will be represented by symbol .
Solution:
The isotope of an element is represented by:
X = Symbol of an element
Z = Atomic Number of that element = Total number of electrons or protons
A = atomic mass of that element = Z+ total number of neutrons
So the uranium isotope with atomic mass of 238 and atomic number of 92 will be written as:
Answer:
B. 238/92 U
Explanation:
Correct answer on edge 2022
Answer:
The correct option is;
Scientist propose explanations that can be explained by examining evidence
Explanation:
A scientists makes an hypotheses based on possible natural processes to explain the origin and/or the nature of the characteristics of a natural observation. The scientist then source more data and information to put their hypotheses to test. Due to the fact that an hypotheses is based on observable processes and/or mechanisms, the given hypotheses can be further tested by other scientists through the use of their individually sourced data. From the result of the assessment, the hypotheses can be either accepted or rejected to enable the better clarification of the hypotheses when accepted or the development of a new hypotheses when rejected.
Answer:
6 is B, 7 is A
Explanation: