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Kisachek [45]
3 years ago
10

Calculate the mass in amu of 75 atoms of aluminum

Chemistry
1 answer:
lyudmila [28]3 years ago
4 0
<span>Calculating mass using Atomic Mass Units (amu):. Ex. Calculate the mass, in amu, of a sample of aluminum that contains 75 atoms. 1 Al atom = 26.98 amu.</span>
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schepotkina [342]
The remaining 90% transforms into Hydrogen and Oxygen. The remaining 90% is recombined to maker larger molecules. I think
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10. What is the energy of x-radiation with a 1 x 10-m wavelength?<br> Esho
luda_lava [24]

Answer:sorry no idea

Explanation:

4 0
3 years ago
What is the solubility of KI at 10C?
Bingel [31]

31.2g per 100g of water.

Explanation:

  • The required result about the solubility of KI at 10C is measured to be 31.2g per 100g of water.
  • Every solution contains a volume and that gets changed radically when the dissolution comes into existence. The result can be seen by inspecting the solubility in mol⋅L−1.
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6 0
3 years ago
Which of these solutions are basic at 25 °C? Solution A: [OH−]=3.13×10−7 M Solution C: [H3O+]=0.000747 M Solution B: [H3O+
solong [7]

Answer:

Are basic:

[OH⁻] = 3.13x10⁻⁷M and [H₃O⁺] = 9.55x10⁻⁹M

Explanation:

A solution is basic when pH = - log [H₃O⁺] is higher than 7.

It is possible to convert [OH⁻] to [H₃O⁺] using:

[H₃O⁺] = 1x10⁻¹⁴ / [OH⁻]

a. [OH⁻] = 3.13x10⁻⁷M

[H₃O⁺] = 1x10⁻¹⁴ / [3.13x10⁻⁷M]

[H₃O⁺] = 3.19x10⁻⁸M

pH = - log [H₃O⁺] = 7.50

[OH⁻] = 3.13x10⁻⁷M is basic

b. pH = -log [H₃O⁺] = - log 0.000747M = 3.13.

This solution is not basic

c. [H₃O⁺] = 9.55x10⁻⁹M

pH = 8.02

This solution is also basic.

8 0
3 years ago
Can Intrusive and Extrusive Igneous rocks form from the same mineral composition?
Annette [7]
No I can’t
EXAMPLE took the test k12
3 0
3 years ago
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