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zalisa [80]
3 years ago
10

Which statement is true about endothermic and exothermic reactions? (5 points) Energy is absorbed in an exothermic reaction.

Chemistry
2 answers:
Grace [21]3 years ago
7 0

Answer:

The answer to your question is below

Explanation:

Energy is absorbed in an exothermic reaction.  An exothermic reaction releases energy so this option is wrong.

Energy is released in an endothermic reaction.  This option is wrong because an endothermic reaction absorbed energy.

The products have more potential energy than the reactants in an exothermic reaction.  This option is wrong because in this kind of reactions the reactants have more potential energy than the products.

The products have more potential energy than the reactants in an endothermic reaction. This option is correct, one characteristic of endothermic reactions is that the products have more potential energy than the reactants.

Alchen [17]3 years ago
4 0

Answer:

OPTION D

Explanation:

i have it on the exam

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Eugenol is a molecule that contains the phenolic functional group. Which option properly identifies the phenol in eugenol
givi [52]

Answer:

Explanation:

Hello,

Among the options given on the attached document, since phenolic functional group is characterized by a benzene ring bonded with a hydroxyl group (C₆H₅OH) we can see that the first option correctly points out such description. Thus, answer is on the second attached picture. Other options are related with other sections found in eugenol that are not phenolic.

Best regards.

3 0
4 years ago
When Wolverine’s 10-pound adamantium claws are dissolved in 100 mL of 10 M nitric acid, 10.7 grams of adamantium nitrate are rec
Mazyrski [523]

The percent yield is 71.3 %.

Explanation:

Percent yield is the measure to analyze the success percentage of any experiment .The percent yield of any experiment can be obtained by the ratio of actual or experimental value to expected or theoretical value multiplied with 100.

Percent Yield = \frac{Experimental Outcome}{Theoretical Outcome} *100

So, in the present problem, we have obtained 10.7 g of adamantium nitrate from Wolverine's 10 pound claws. So the actual value or the experimental value is the amount of adamantium nitrate obtained from Wolverine's claws.

Thus, the experimental outcome is 10.7 g. While we had expected to recover 15 g of adamantium nitrate. So the theoretical outcome is 15 g.

Percent yield = \frac{10.7}{15} * 100 = 71.3 %

Thus, the percent yield is 71.3 %.

7 0
3 years ago
What shape does N2H4 have? (linear, bent, planar, pyramid, tetrahedral, or none)
Salsk061 [2.6K]
The N2H4 bond angle will be probably 109 degrees. Since, well,<span> it has a bent </span>trigonal pyramidal<span> geometry.</span>
8 0
3 years ago
In what way did political policies act as a centrifugal force in the Soviet Union during the late 1980s
RUDIKE [14]

The government gave the people more freedom to criticize the government which led to nationalist movements

<h3>What way did political policies act as a centrifugal force in the Soviet Union during the late 1980s ?</h3>

In the late 1980s, the economic and social situation in the Soviet Union was tense. The socialist economy was on the verge of collapse, the war in Afghanistan was an assured defeat, and the quality of life for Soviet citizens was appalling.

  • Due to these situations, the Soviet leader Mikhail Gorbachev decided to carry out a series of economic and political reforms, known as Perestroika and Glasnost, aimed at liberalizing the economy from a pure socialist model to a mixed model, and granting greater rights and civil liberties to the citizens.
  • This led to numerous mobilizations and demonstrations, which further weakened the already weak Soviet political apparatus and made possible the emergence of regionalist nationalisms in the former Soviet nations, especially those subjugated to the power of Russia.

Learn more about Soviet Union here:

brainly.com/question/1310325

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6 0
2 years ago
6NaBr+1AlO3=3Na2O+2AlBr3 How many grams of NaBr would be needed in order to make 23.5 grams of AlBr3
Evgesh-ka [11]

Answer:

23.5 grams of AlBr3 will be produced by 27.20 grams of NaBr

Explanation:

The balanced equation here is

6NaBr + 1AlO3 = 3Na2O + 2AlBr3

6 moles of NaBr are required to produce 2 moles of AlBr3

Mass of one mole of NaBr = 102.894 g/mol

Mass of one mole of AlBr3 = 266.69 g/mol

Mass of 6 moles of NaBr = 6*102.894 g/mol

Mass of two moles of AlBr3 = 2*266.69 g/mol

6*102.894 g  NaBr produces 2*266.69 g of AlBr3

23.5 grams of AlBr3 will be produced by (6*102.894)/(2*266.69 )*23.5 = 27.20 grams of NaBr

6 0
3 years ago
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