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Oksanka [162]
3 years ago
13

When dry ice goes from a solid straight to a gas, it is known as a(n):

Chemistry
1 answer:
RideAnS [48]3 years ago
7 0
Carbon dioxide   СО₂
________________
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15. Why do many substances dissolve easily in water?
mash [69]

Answer:

Water is called the "universal solvent" because it is capable of dissolving more substances than any other liquid. ... Water molecules have a polar arrangement of oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge

Explanation:

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3 years ago
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Which formula represents copper(I) oxide?<br> (1) CuO (3) Cu2O<br> (2) CuO2 (4) Cu2O2
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The answer is (3) Cu2O. Copper (I) has an oxidation state of +1 (that's what the "I" indicates). You can also think of this as copper (I) having a charge of +1. Oxygen has an oxidation state of -2 (that's just a rule you have to know), and you can think of it as oxygen having a charge of -2. You need oxidation numbers in a neutral compound to add up to 0 (or charges in a neutral compond to add up to 0), so you need two Cu to balance the O, which is Cu2O.
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Which statement describes both homogeneous mixtures and heterogeneous mixtures?
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As a cooking method, braising is valued for its A. ability to retain flavor. B. quickness and convenience. C. ability to create
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Answer: Option (A) is the correct answer.

Explanation:

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Also, Braising is done to mix the flavors of different liquids or spices appropriately.  

Thus, we can conclude that as a cooking method, braising is valued for its ability to retain flavor.

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How do polar molecules respond when they are placed between two metal plates, one positively charged and one negatively charged?
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The molecules align to the electric field

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