Explanation:
if they aren't in a solvent, then you magnetize first, to remove the iron fillings, secondly, you can sieve to separate the sand and pebbles
Answer:
[H⁺] = 16.6 (±1.9) x10⁻⁴ M
Explanation:
The <em>pH</em> is defined as:
So we can <u>calculate [H⁺]</u>:
- [H⁺] =
<u>[H⁺] = 1.66x10⁻³ M</u>
The <u>relative uncertainty</u> in [H⁺] is
- uR/R = 2.303 x AbsoluteUncertainty
- uR/R = 2.303 * 0.05 = 0.115
Thus the<em> uncertainty</em> in the concentration is:
1.66x10⁻³ M * 0.115 = <u>1.91x10⁻⁴ M</u>
A chemical reaction expressed in words rather than a chemical formula
<span>A greater amount of HCl will be needed to conclude the titration as the concentration of the borax solution is half of what it is needed to be. Thus, double the amount of HCl will be needed to conclude the titration</span>
Answer:
Your nervous system is your body's command center. Originating from your brain, it controls your movements, thoughts and automatic responses to the world around you. It also controls other body systems and processes, such as digestion and breathing.