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Vlada [557]
3 years ago
14

Which phrase describes a polymer? A. a branching structure containing 10 carbon atoms and 22 hydrogen atoms B. a crystal contain

ing many sodium ions and many fluoride ions C. a long chain of carbon atoms with hydrogen atoms attached to them D. a molecule containing six carbon atoms arranged in a ring structure E. a single atom of calcium bonded to two atoms of chlorine
Chemistry
2 answers:
erica [24]3 years ago
5 0

Answer:

C. A long chain of carbon atoms with hydrogen atoms attached to them

Explanation:

For example, the main component of flour is starch and starch is a polymer.

Now, Starch is a polymeric carbohydrate that consists of a large number of glucose units which are bonded by chemical bonds known as glycosidic bond. It's also known that Starch is a white, tasteless and odorless powder that is not soluble in alcohol or even cold water.

Thus, we can say that polymer is a long chain of carbon atoms with hydrogen atoms attached to them.

Option C is correct.

Verdich [7]3 years ago
3 0

Answer:

C. A long chain of carbon atoms with hydrogen atoms attached to them

Explanation:

For example, the main component of flour is starch and starch is a polymer.

Now, Starch is a polymeric carbohydrate that consists of a large number of glucose units which are bonded by chemical bonds known as glycosidic bond. It's also known that Starch is a white, tasteless and odorless powder that is not soluble in alcohol or even cold water.

Thus, we can say that polymer is a long chain of carbon atoms with hydrogen atoms attached to them.

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A car moves around a circular track at a constant rate. What must change?
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Answer:C) both its speed and its velocity.

Explanation:

changing one but not the other would cause a spin out and crash

7 0
3 years ago
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Please help I will give brainliest!
aleksklad [387]
I believe it’s the 3rd option
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Using the example in the above information determine the empirical formula of a compound if a sample contains 0.130 g of nitroge
olga2289 [7]

Answer: The empirical formula for the given compound is NO_2

Explanation : Given,

Mass of O = 0.370 g

Mass of N = 0.130 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Oxygen = \frac{\text{Given mass of oxygen}}{\text{Molar mass of oxygen}}=\frac{0.370g}{16g/mole}=0.0231moles

Moles of Nitrogen = \frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{0.130g}{14g/mole}=0.00928moles

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.00928 moles.

For Oxygen  = \frac{0.0231}{0.00928}=2.4\approx 2

For Nitrogen = \frac{0.00928}{0.00928}=1

Step 3: Taking the mole ratio as their subscripts.

The ratio of O : N = 2 : 1

Hence, the empirical formula for the given compound is NO_2

4 0
3 years ago
What evidence of a chemical reaction might you see in the following cases?
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For bleaching a stain, there will be an identifiable odor and it will easily absorb colors and/or stains. Burning a match also has odor involved, but the smoke that is released is from a hot fire that is chemically produced by the formula to make the tip of the match.
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