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Shkiper50 [21]
3 years ago
9

If you wanted to make a crucible for melting sodium (Na), which metal would be most suitable for that purpose

Chemistry
1 answer:
Andreyy893 years ago
7 0
Calcium would be best suitable
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THE EXTRACTION OF METALS FROM THEIR RESPECTIVE ORES IS KNOWN AS METALLURGY.
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3 years ago
If you only have 36.5 grams of Potassium Carbonate (K2CO3 molar mass = 138.2 g/mole). How many liters of a 0.52 M solution can y
kirza4 [7]

Answer:

0.508 L of solution.

Explanation:

Always a safe bet to convert to moles:

n= {m \over MM}\\

Where n is moles, m is mass, and MM is molar mass.

Now remember the equation for concentration (molarity):

C={n \over V}

Where C is the concentration, n is moles, and V is volume.

To make this easy, combine the two equations (note n appears in both, so you can do a substitution) and solve for V as the question asks:

C={m \over MM \times V}\\0.52={36.5 \over 138.2 \times V}\\V={36.5 \over 138.2 \times 0.52}\\V=0.508

Therefore we can make 0.508 L of solution.

8 0
3 years ago
The percentage of the earth’s atmosphere today is the same as it was in the earths early atmosphere. Suggest why.
jek_recluse [69]

Explanation:

Once the earth's atmosphere was formed it really hasn't changed since, this is due to many reasons. Whatever created the earth's atmosphere (we don't know) has long disappeared, because of this the atmosphere cannot change, as there is nothing on earth that can change it (that we know of at least). Hopefully this helps.

7 0
3 years ago
g For each of the following cases, indicate whether the first entity is greater than, less than or equal to the second entity. W
Marianna [84]

Answer:

Explanation

check the solution in the attached

7 0
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