Answer:
A. The Swallowing reflex
Explanation:
Dysphagia Is a a condition that makes swallowing difficult.
<span>Answer: an element and a compound.
An element is a pure substance formed by one kind of atoms (element).
A compound is a pure substance formed by several types of atoms(elements) that are connected by chemical bonds.
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Answer:
10.3
Explanation:
The pH of a substance is a number spanning from 0 to 14.
A substance with pH between 0 and 7 is said to be acid, while a substance with pH between 7 and 14 is said to be basic. A substance with pH of 7 is a neutral substance.
The pH of a solution can be calculated using the formula:
where
is the concentration of hydronium ion in the solution
In this problem, we have a concentration of hydronium ion in the solution equal to
Therefore, we can apply the formula above to calculate the pH of the solution, and we find:
So, the pH of this solution is 10.3.
Answer:
Explanation:
Given
Required
Determine the final mass
First we need to determine the total mass after the sample mass is added to an additional sample;
Next, divide the total mass by 3
The final mass is calculated as follows;
<em>Hence, the final mass is 17.560943085g</em>