Answer:
Average = 63.6
Explanation:
Average : The average of the given set of points can be calculated by dividing sum of the total point to the number of points.
The points that are given in this equation are:
83.2 , 44.6 , 74.4 , 52.3 .
These are 4 in number . So average is
Significant digits : It is the number of digits that carry meaningful value to a measurement. The rules for counting number of significant digits are:
1. all non-zero digit are significant
2.Any zero between two non-zero are also significant.(305 = 3 significant digit )
3. Zero before the decimal are non-significant (0.003 = only 1 significant digit)
Zero after decimal are significant (3.00 has 3 significant digit)
4.Zero after non - zero digit is non significant (300 has 1 significant digit).
Significant digits in division :
The answer should have the significant digits that are least in any of number(83.2 , 44.6 , 74.4 , 52.3 )
All have = 3 significant digits.
So least numner of significant digit =3
Answer should have total = 3 significant digits
So,
Average = 63.6
The molarity of the dilution solution is 0.050 M
<h3>Further explanation</h3>Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
Dilution formula :
M₁=6 M
V₁=12.5 ml
V₂=1.5 L=1500 ml
Answer:
1. a chemical reaction in which one substance breaks up into two or more new substances: decomposition reaction
2. a reaction in which two or more substances combine to form a new substance: synthesis reaction
3. the reaction of an acid with a base to form a salt and water: neutralization reaction.
4. chemical compound formed when the negative ions from an acid combine with the positive ions of a base: salt
5. two ionic compounds reacting in solution to form two new compounds, one of which is insoluble: double displacement reaction.
6. a reaction in which an active metal displaces a less active metal or hydrogen from a compound solution (or a nonmetal replaces a nonmetal from a compound in solution): Single replacement reaction
Explanation:
1. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.
Example:
2. Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.
Example:
3 and 4. Neutralization is a chemical reaction in which an acid and a base reacts to form salt and water. Salt is formed when cations or positive ions of base combine with anions or negative ions of acid.
Here is the salt formed by combination of
from base and
from acid.
Example:
5. A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
Example:
6. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
Example: