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iren [92.7K]
3 years ago
8

Which of the following statements about minerals is false?

Chemistry
1 answer:
Eva8 [605]3 years ago
3 0
Satement no. a and d
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Which one would it be?
Verdich [7]

Answer:

it would be C! 0.0520 Km

5 0
2 years ago
Can someone pls help me with this question
artcher [175]

Answer:

The answer to your question is 24.325

Explanation:

Data

Magnesium-24  Abundance = 78.70%

Magnesium-25  Abundance = 10.13%

Magnesium-26  Abundance = 11.17%

Process

1.- Convert the abundance to decimals

Magnesium-24  Abundance = 78.70/100 = 0.787

Magnesium-25  Abundance = 10.13/100 = 0.1013

Magnesium-26  Abundance = 11.17/100 = 0.1117

2.- Write an equation

Average atomic mass = (Atomic mass-1 x Abundance 1) + (Atomic mass 2 x

                                       Abundance-2) + (Atomic mass 3 x Abundance 3)

3.- Substitution

Average atomic mass = (24 x 0.787) + (25 x 0.1013) + (26 x 0.1117)

4.- Simplification

Average atomic mass = 18.888 + 2.533 + 2.904

5.- Result

Average atomic mass = 24.325

5 0
3 years ago
Is caffeine additive?
Romashka-Z-Leto [24]

Answer:

yes

Explanation:

yes

7 0
3 years ago
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Willa holds a pan over a campfire, as shown in the figure below. She feels warmth from the fire.
GarryVolchara [31]

Answer:

thermal radiation/ transfer of heat

6 0
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What precautions must be taken when you introduce a mixture of compounds to be separated onto a liquid chromatography column?
earnstyle [38]

<span>The slim exit of the column is first persisted with glass wool or a permeable plate in order to sustain the column packing element and keep it from getting out of the tube. Then the adsorbent solid, which is usually a silica, is firmly packed into the glass tube to make the separating column. The packing of the non-moving phase into the glass column must be done with precaution to create an even distribution of material. An even distribution of adsorbent material is very important to lessen the existence of air bubbles and/or channels inside the column. To finish preparing the column, the solvent to be used as the mobile phase is delivered through the dry column. Then the column is said to be "wetted" and the column must stay wet throughout the entire procedure. Once the column is properly prepared, the sample to be separated is placed at the top of the wet column.</span>

5 0
3 years ago
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