Use a sieve to separate the water from the iron fillings and sand.
Use a magnet to separate the iron from the sand.
Answer:
0.48 moles
Explanation:
The bromide has a molarity of 2.6M.
This simply means that in 1dm^3 or 1000cm^3 of the solution, there are 2.6 moles.
Now, we need to get the number of moles in 185ml of the bromide. It is important to note that the measurement ml is the same as cm^3.
We calculate the number of moles as follows.
If 2.6mol is present in 1000ml
x mol will be present in 185 ml.
To calculate x = (185 * 2.6) ÷ 1000
= 0.481 moles = 0.48 moles to 2 s.f
Answer:
a. 0.5dm³
b. 5x10⁻³dm³
Explanation:
a. A solution that is 4mol/dm³ contains 4 moles in 1dm³. The volume that contains 2 moles is:
2 moles * (1dm³ / 4mol) =
<h3>0.5dm³</h3><h3 />
b. And for the 6 mol/dm³ containing 0.03moles:
0.03 moles * (1dm³ / 6mol) =
<h3>5x10⁻³dm³</h3>
Average human body temperature 37.0 309.95
Boiling temperature for water (at standard pressure) 99.9839 373.1339
Extraction<span> is the crucial first step in the analysis of medicinal </span>plants<span>, because it is necessary to </span>extract<span> the desired chemical components from the </span>plant<span> materials for further separation and characterization</span>
