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Zigmanuir [339]
3 years ago
10

Which statement is part of the 3R rule?

Chemistry
1 answer:
makvit [3.9K]3 years ago
7 0

Answer:

The 3R rule states that Radial cracks form a Right angle on the Reverse side of the force. This rule enables an examiner to determine readily the side on which a window or pane of glass was broken.

I hope it's helpful!

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Why are alloys preferable at times?
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Alloys are preferable at times because they offer interesting properties than pure metal. Alloys are made in order to modify or enhance properties, especially mechanical properties. Examples are stainless steel, brass and wrought iron.
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3 years ago
A compound is composed of 58% copper, 12.79% nitrogen, and 29.21% oxygen. What is the empirical formula of the compound?
padilas [110]

Answer:

C47N9O18 is the empirical formula of this compound.

Explanation:

3 0
2 years ago
Calculate the empirical formula of a compound that is 42.9% Carbon and 57.1% Oxygen.
Marrrta [24]

Answer:

CO.

Explanation:

Assuming the given percentages are by mass, we can solve this problem via imagining we have <em>100 g of the compound</em>, if that were the case we would have:

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Now we <u>convert those masses into moles</u>, using the<em> elements' respective molar masses</em>:

  • 42.9 g of C ÷ 12 g/mol =  3.57 mol C
  • 57.1 g of O ÷ 16 g/mol =  3.58 mol O

As the number of C moles and O moles is roughly the same, the empirical formula for the compound is <em>CO</em>.

4 0
3 years ago
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marusya05 [52]
The solve is D) Feo4+h2o
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Which is another word for 10 meters in the metric system?
kotegsom [21]

Answer:

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