Answer:
Fusão: a substância volta do sólido para o líquido. Condensação: a substância muda de um gás para um líquido. Vaporização: a substância muda de líquido para gás. Sublimação: a substância muda diretamente de um sólido para um gás sem passar pela fase líquida.
Answer:
The mass percent refers to the mass of an element in a compound. It is one of the ways of expressing concentration. The mass percent of the solution provides the percentage of the amount of solute present in grams of solution.
The mass percentage of S=40.06 % and the molar mass of S= 32. By applying the formula of mass percent,we can calculate the molar mass of M.
The molar mass of M=159.76-64=95.76
We know that the element of molybdenum has molar mass of 96. Therefore, the element M is <u>Molybdenum.</u>
Given the speed, you will travel 195km in 3 hours.
65 x 3 = 195
C.8.7
Explanation:
Given parameters:
pH of solution = 5.3
Unknown:
pOH of solution = ?
Solution:
A suitable scale for measuring the level of acidity or alkalinity of aqueous solutions is the pH or pOH scale.
For any aqueous solution;
pH + pOH = 14
pOH = 14 - pH
pOH = 14 - 5.3 = 8.7
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