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The answer would be D. The only minerals harder than corundum is diamond.
Acids: taste sour, has a pH less than 7
bases: tastes bitter, has a pH greater than 7
Answer:
![M=0.638M](https://tex.z-dn.net/?f=M%3D0.638M)
Explanation:
Hello!
In this case, since the molarity of a solution is calculated by diving the moles of solute by the volume of solution in liters, we first compute the moles of barium hydroxide in 35.5 g as shown below:
![n=35.5g Ba(OH)_2*\frac{1molBa(OH)_2}{171.34gBa(OH)_2}\\\\n=0.207mol](https://tex.z-dn.net/?f=n%3D35.5g%20Ba%28OH%29_2%2A%5Cfrac%7B1molBa%28OH%29_2%7D%7B171.34gBa%28OH%29_2%7D%5C%5C%5C%5Cn%3D0.207mol)
Then, the liters of solution:
![V=325mL*\frac{1L}{1000mL} =0.325L](https://tex.z-dn.net/?f=V%3D325mL%2A%5Cfrac%7B1L%7D%7B1000mL%7D%20%3D0.325L)
Finally, the molarity turns out:
![M=\frac{0.207mol}{0.325L}\\\\M=0.638M](https://tex.z-dn.net/?f=M%3D%5Cfrac%7B0.207mol%7D%7B0.325L%7D%5C%5C%5C%5CM%3D0.638M)
Best regards!
<u>Answer and Explanation:</u>
Mercury combines with sulfur as follows -
Hg + S = HgS
Hg = 200,59
S = 32,066 Therefore 1.58 g of Hg will react with -
1.58 multiply with 32,066 divide by 200,96 of sulfur.
= 0.25211 g S
This will form 1.58 + 0.25211 g HgS = 1.83211 g HgS
The amount of S remaining = 1.10 - 0.25211 = 0.84789 g