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attashe74 [19]
3 years ago
10

can someone explain how this is wrong? I don’t think it is wrong but my chem teacher deducted points. so why?

Chemistry
1 answer:
ruslelena [56]3 years ago
7 0

Answer: measure the mass (48.425g) of KCl

Explanation:

To prepare the solution 0.65M KCl we must measure the mass of KCl that would be dissolved in 1L of the solution. This can be achieved by:

Molar Mass of KCl = 39 + 35.5 = 74.5g/mol

Number of mole (n) = 0.65

Mass conc of KCl = n x molar Mass

Mass conc of KCl = 0.65 x 74.5 = 48.425g

Therefore, to make 0.65M KCl, we must measure 48.425g

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3 years ago
A bowling ball and basketball collide, what direction do they go and how is energy transferred?
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Pick one option:
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Answer:

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Explanation:

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4 0
3 years ago
Given the following equation: 2C6H6 + 1502 - 12CO2 + 6H20
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Answer:

a) 30 moles

Explanation:

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given                    4.0 mol     x mol

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5 0
3 years ago
How can I identify which substance is more thermal stable?
lorasvet [3.4K]

Answer:

Explanation:

Thermal stability is the tendency to not break down when exposed to heat. A more negative enthalpy of formation will correlate with more stable products. Therefore, the more negative the enthalpy of formation is for a substance, the greater its thermal stability.

Hope it helps you!

8 0
2 years ago
Read 2 more answers
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