Should be :
Lead Sulfate Tetrahydrate
Can you restate the questions again ?
Answer:
It is a law because it is a statement of fact that does not need any more experimental support.
Explanation:
A hypothesis is an acceptable assumption that is formulated through the collection of information and data and that attempts to explain some phenomenon. In other words, a hypothesis is a conjecture with which one tries to explain an observed fact. The formulation of a hypothesis can be derived in two different ways: by generalization, from a certain number of cases or observed phenomena; and, by analogies observed in the occurrence of different phenomena.
A theory is something that attempts to explain some phenomenon and that is accepted as true by the scientific community. In other words, a theory is a set of rules that describe the behavior of a particular system.
A law is a statement that expresses the constant relationships between phenomena of nature, society or the mind. Scientific law can be defined as an invariable relationship of terms. In other words, a law is what is scientifically proven to be true, it is universally applicable.
So scientific theories and scientific laws are based on hypotheses. But a theory is the explanation of an observed phenomenon, while a scientific law is the description of an observed phenomenon.
The movements of bodies in space are governed by Newton's Laws. These are laws why they are demonstrated by mathematical formulas and Universal application.
Then, the correct option is <u><em>"It is a law because it is a statement of fact that does not need any more experimental support."</em></u>
In a equinox, around 20 March and 23 September
Answer:
Due to the limited supply of oxygen, carbon (ii) oxide, a poisonous gas, is produced instead of carbon(iv) from the burning charcoal stove and this may result in death when inhaled.
Explanation:
When charcoal is burnt in a plentiful supply of oxygen, the combustion products is carbon (iv) oxide (carbon dioxide) which is not very toxic to the human body. The equation of the reaction is given below:
C + O₂ ----> CO₂
However, in a limited supply of oxygen gas, the combustion product is carbon (ii) oxide. The equation of the reaction is given below:
2C + O₂ ----> 2CO
Carbon (ii) oxide is a colorless and odorless gas which unlike carbon (iv) oxide is very toxic to human and results in fatality when inhaled in even small doses for a few minutes. Its mechanism of action of toxicity is that it competes with oxygen for transport in the body by hemoglobin. It combines irreversibly with hemoglobin to form carboxyhemoglobin, thereby depriving tissues and cells the oxygen they need. This results in death of the cells and tissues as well as of the whole organism. Thus, it is not advisable to light a charcoal stove in limited supply of oxygen.
