Answer: This is the hue of mercury if you're looking for it. Mercury reacts with sulphur to generate a crimson hue. In the past, they always used a thermometer.
Explanation: However, due of its toxicity, individuals have switched to using alcohol in glass thermometers, which work similarly to mercury thermometers.
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Answer:
Actinium is a chemical element with the symbol Ac and atomic number 89. A soft, silvery-white radioactive metal, actinium reacts rapidly with oxygen and moisture in air forming a white coating of actinium oxide that prevents further oxidation.
Answer:
pH = -1
Explanation:
A solution of 10 mol·L⁻¹ HCl is very acidic.
HCl is a strong acid, so it dissociates completely in water and
![[\text{H}_{3}\text{O}^{+}] = \text{10 mol/L}](https://tex.z-dn.net/?f=%5B%5Ctext%7BH%7D_%7B3%7D%5Ctext%7BO%7D%5E%7B%2B%7D%5D%20%3D%20%5Ctext%7B10%20mol%2FL%7D)
To get the pH, you take the negative logarithm of the hydronium ion concentration.
So, a pH = -1 represents a very acidic solution.
Answer:
5 L
Explanation:
We'll begin by calculating the molarity of the CaCl₂ solution. This can be obtained as follow:
Mole of CaCl₂ = 0.5 mole
Volume = 2 L
Molarity =?
Molarity = mole /Volume
Molarity = 0.5 / 2
Molarity = 0.25 M
Finally, we shall determine the volume of the diluted solution. This can be obtained as follow:
Molarity of stock solution (M₁) = 0.25 M
Volume of stock solution (V₁) = 2 L
Molarity of diluted solution (M₂) = 0.1 M
Volume of diluted solution (V₂) =?
M₁V₁ = M₂V₂
0.25 × 2 = 0.1 × V₂
0.5 = 0.1 × V₂
Divide both side by 0.1
V₂ = 0.5 / 0.1
V₂ = 5 L
Thus the volume of the diluted solution is 5 L
