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kirill [66]
3 years ago
15

2. Using the specific heat capacity value that you determined in Part II of the lab, what is the most probable identity of the u

nknown metal that you examined? Please explain your reasoning in complete sentences.
Chemistry
1 answer:
love history [14]3 years ago
4 0
Well what is part 2? but in general if we heat up two metals one the metal that has higher heat capacity and the other metal with lower heat capacity, the one with lower heat capacity gets hotter.
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What is the mass of 1.2 x 1023 atoms of arsenic?
Gre4nikov [31]

Answer:

14.93 g

Explanation:

First we <u>convert 1.2 x 10²³ atoms of arsenic (As) into moles</u>, using <em>Avogadro's number</em>:

  • 1.2 x 10²³ atoms ÷ 6.023x10²³ atoms/mol = 0.199 mol As

Then we can<u> calculate the mass of 0.199 moles of arsenic</u>, using its<em> molar mass</em>:

  • 0.199 mol * 74.92 g/mol = 14.93 g

Thus, 1.2x10²³ atoms of arsenic weigh 14.93 grams.

6 0
3 years ago
How many grams of NaCl are needed to prepare 50.0 grams of 35.0% of salt solution?
nevsk [136]

Answer:

17.5 g

Explanation:

Given data

  • Mass of solution to be prepared: 50.0 grams
  • Concentration of the salt solution: 35.0%

The concentration by mass of NaCl in the solution is 35.0%, that is, there are 35.0 grams of sodium chloride per 100 grams of solution. We will use this ratio to find the mass of sodium chloride required to prepare 50.0 grams of a 35.0% salt solution.

50.0gSolution \times \frac{35.0gNaCl}{100gSolution} = 17.5gNaCl

4 0
3 years ago
Does percent error measure accuracy or precision?
Nesterboy [21]

Answer:

Precision

Explanation:

It figures out how close all of the data numbers are.

4 0
3 years ago
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Lithium reacts with oxygen in a synthesis reaction. How much lithium is needed to react with 2.6 g of oxygen?
Vikentia [17]

Answer: A

Explanation:

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5 0
2 years ago
What is the definition of specific heat? O A. The heat required to break the molecular bonds within a substance B. The total amo
snow_tiger [21]

Answer:

C

Explanation:

C .       specific heat =    J / gm-C

               

7 0
2 years ago
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