Answer:
First off Life sciences are anything concerned with the study of a living organisms. So ones that would be included would be, microbiology biology, botany, zoology, ecology, genetics and medicine, from what the dictionary states
Explanation:
Biology is the natural science that studies life and living organisms. Which also includes molecular interactions, including their physical structure.
Genetics, is the study of heredity and or the variation of inherited characteristics that we get from family.
Microbiology, is the branch of science which deals with microorganisms.
Let me know if this helps, if not I'll continue researching.
Answer:
When an element loses an electron, its oxidation number increases.
Explanation:
The oxidation number of an element indicates the hypothetical charge of an atom in a compound. It is hypothetical because, in the context of a compound, the elements may not necessarily be ionic. When the number of electrons associated with an atom changes, its oxidation number also changes. When an element loses an electron, its oxidation number increases.
The atomic mass of the elements making up MgCl₂ are;
Mg - 24.3
Cl - 35.45
The formula mass of MgCl₂ is 24.3 + (2x35.45) = 95.2
One formula is made of 6.022 x 10²³ formula units of MgCl₂
the formula mass of 95.2 contains 6.022 x 10²³ formula units
Therefore a mass of 34.6 g -
number of MgCl₂ formula units are - 2.19 x 10²³ formula units
Answer:
0.22 g of CO2 were produced.
Explanation:
First, let's represent what is happening with an hypothetical chemical equation just to have a clearer vision of the presented process:
CaCO3 (aq) + 2 HAc (aq) → CaAc2 (aq) + H2O (l] + CO2 (g)
We have a tablet that has CaCO3 as the active ingredient that when combined with an acid, in this case represented as HAc, reacts producing a Calcium salt, water and carbon dioxide that will leave the solution as gas.
Having said that, we know that the initial mass of the reactants will have to maintain during the chemical reaction, or what is the same, the quantity of matter during the process will not change. So, if we have a tablet that weighs 0.853 g and we add an acid solution of 56.519 g, then we have that the initial mass of the reactants will be:
0.853 g from tablet + 56.519 g from acid solution = 57.372 g
This amount of matter should be the same after the reaction, but we know that the CO2 gas will leave the solution once it's formed, so considering that the resulting solution weighs 57.152 g we could calculate the mass of CO2 produced:
57.372 g of initial mass - 57.152 g of resulting solution = 0.22 g of CO2 that left the aqueous solution as gas.
The answer is NO. It can not be a compound it is an element.
In a component mixture it can be separated physically way from the other.
In element it can be only separated by a way of destroying the compound itself by chemical reaction.
