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Citrus2011 [14]
3 years ago
5

Which of the following is equal to 0.45 mm3? (B, right?)

Chemistry
1 answer:
Svetradugi [14.3K]3 years ago
6 0
In order to convert mm³ to m³, we use the conversion factor of 1m = 1000 mm. Also, the conversion factor of mm³ to cm³, we use the factor of 1cm = 10 mm.

= (0.45 mm³) x (1 m/ 1000 mm)³ = 4.5 x 10^-10 m³

= (0.45 mm³) x (1 cm/10 mm)³ = 4.5 x 10^-4 cm³

Thus, the answer is letter B. 
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If you have 0.045 L of 0.465 M potassium bromide. How many moles of potassium bromide are present?
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The answer to your question is letter A! Hope that helps
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There are two common oxides of copper; one is 80% copper and the other is 89% copper by weight. Calculate the formula and name e
irakobra [83]

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89% copper (Cu)

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2 years ago
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Reika [66]
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Read 2 more answers
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Kazeer [188]

Answer:

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Explanation:

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We need to find in an appropiate reference table the bond energies for all the species in the reactions and then compute the result.

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1 N≡N = 1(945 kJ/mol)     3 H-H = 3 (432 kJ/mol)       6 N-H = 6 ( 389 kJ/mol)

∆H° rxn = ∑  H bonds broken  - ∑ H bonds formed

∆H° rxn = [ 1(945 kJ)   + 3 (432 kJ) ] - [ 6 (389 k J]

∆H° rxn = 2,241 kJ -2334 kJ = -93 kJ

be careful when reading values from the reference table since you will find listed N-N bond energy (single bond), but we have instead a triple bond,  N≡N,  we have to use this one .

8 0
3 years ago
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umka21 [38]

Answer: Mixture

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3 0
2 years ago
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