46.6% Oxygen
27.7% Silicon
8.1% Aluminium
5.0% Iron
3.6% Calcium
2.8% Sodium
2.6% Potassium
2.1% Magnesium
Yep u right bro but like you know I’m here with these guys you know what I mean tho
Answer:
Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.
Explanation:
Molar mass CuSO4.5H2<span>O => 249.685 g/mol
Volume in liters => 100 mL / 1000 => 0.1 L
</span>
1 L ----------------- 0.05 M
0.1 L -------------- ?? ( moles of <span>copper sulfate pentahydrate )
</span>
0.1 x 0.05 / 1 => 0.005 moles
1 mole ------------- <span> 249.685 g
</span>0.005 moles ------- ( mass of <span>copper sulfate pentahydrate )
</span>
0.005 x 249.685 / 1 => 1.28425 g CuSO4.5H2<span>O
</span>
hope this helps!
