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Lina20 [59]
3 years ago
9

The energy exchange with the environment during a chemical reaction is called the _____ of reaction.

Chemistry
2 answers:
Allisa [31]3 years ago
3 0
The temperature of reaction.
vekshin13 years ago
3 0

Answer:

The given blank can be filled with the heat of reaction.  

Explanation:

The heat of reaction refers to the amount of heat, which must be withdrawn or supplemented at the time of a chemical reaction in order to maintain all of the substances found at a similar temperature.  

The heat of reaction also called the enthalpy of reaction refers to the variation in the enthalpy of a chemical reaction, which takes place at a constant pressure.  

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C. Answer correct I think…
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sucrose is composed of carbon hydrogen and oxygen which of the following is not needed in order to determine the precent by mass
Dimas [21]

Explanation:

It is often desirable to determine the mass percent of elements in a given compound.

To determine the mass percent of elements:

  • Evaluate the formula mass of the compound. This is done by summing the atomic masses of the atoms in the compound together.
  • The mass percentage is determined by pacing the mass contribution of each element or group to the formula mass of the compound and multiply by 100.

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3 years ago
What is the organization that regulates the safety of Bluetooth and other wireless devices
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Answer:

The U.S. Federal Communications Commission (FCC)

Explanation:

7 0
2 years ago
The diameter of a red blood cell is about 3 × 10−4 in. What is its diameter in centimeters?
lesantik [10]

Answer:

1 in. =2.54 cm

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Explanation:

8 0
3 years ago
Read 2 more answers
Li + HNO3 > LiNO3 + H2 how do I balance it? Show work pls
azamat

Answer: The balanced equation is 2Li + 2HNO_{3} \rightarrow 2LiNO_{3} + H_{2}.

Explanation:

The given reaction equation is as follows.

Li + HNO_{3} \rightarrow LiNO_{3} + H_{2}

Number of atoms present on reactant side are as follows.

  • Li = 1
  • H = 1
  • NO_{3} = 1

Number of atoms present on product side are as follows.

  • Li = 1
  • H = 2
  • NO_{3} = 1

To balance this equation, multiply Li by 2 and HNO_{3} by 2 on reactant side. Also, multiply LiNO_{3} by 2 on product side.

Hence, the equation can be rewritten as follows.

2Li + 2HNO_{3} \rightarrow 2LiNO_{3} + H_{2}

Now, number of atoms present on reactant side are as follows.

  • Li = 2
  • H = 2
  • NO_{3} = 2

Number of atoms present on product side are as follows.

  • Li = 2
  • H = 2
  • NO_{3} = 2

As there are same number of atoms on both reactant and product side. Hence, the equation is now balanced.

Thus, we can conclude that the balanced equation is 2Li + 2HNO_{3} \rightarrow 2LiNO_{3} + H_{2}.

3 0
2 years ago
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