1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bess [88]
3 years ago
5

What is the defining characteristic of an exothermic reaction.

Chemistry
1 answer:
xenn [34]3 years ago
7 0
Heat gets given off or emitted during the reaction
Hope this helps and don’t forget to mark as brainliest if you thought it was most helpful :)
You might be interested in
Vanillin (used to flavour vanilla ice cream and other foods) is the substance whose aroma the human nose detects in the smallest
Rudiy27

Answer:

The cost is $0.063.

Explanation:

First, we need to express the volume of the hangar in liters. We know that 1 ft³ = 28.31 L, so using proportions:

5.0 \times 10^{7} ft^{3} .\frac{28.31L}{1ft^{3} } =1.4 \times 10^{9} L

The amount of vanillin required would be:

1.4 \times 10^{9} L.\frac{2.0\times 10^{-11}g }{1L} =0.028g

Finally, the price for such amount of vanillin is:

0.028g.\frac{ \textdollar 112}{50g}=  \textdollar 0.063

6 0
3 years ago
How many ounces are in 0.442 L? Use dimensional analysis to
vovangra [49]

Answer:

14.945798 in us fluid ounce

Explanation:

3 0
3 years ago
Help!!!!?????????? plssssssss
DIA [1.3K]

Answer: it’s b)

Explanation: that’s the only difference that is listed

4 0
3 years ago
Read 2 more answers
Which is a pure substance?<br> soda<br> gasoline<br> salt water<br> carbon dioxide
hram777 [196]

Answer: Carbon dioxide is a pure substance.

Explanation: A pure substance is defined when a substance has a single type of molecule. If more than 1 type of molecule is present in a substance, then it is considered as a mixture.

  • Soda is basically a mixture of water and carbon dioxide. More than 1 type of molecule is present.
  • Gasoline is a mixture of may gases. More than 1 type of molecule is present.
  • Salt water contains salt and water molecules, hence it is considered as a mixture.
  • Carbon dioxide has only 1 type of molecule which is CO_2 molecules. Hence, it is a pure substance.
8 0
3 years ago
Read 2 more answers
What is required to move from one state or phase of matter to the next
tigry1 [53]

energy is required to move from one state or phase of matter to the next. Energy is used to make a liquid into a gas or a solid into a liquid.

7 0
3 years ago
Other questions:
  • T is possible to produce a perfect crystalline solid that does not contain any vacancies?
    6·2 answers
  • NOT A SERIOUS QUESTION IM JUST EXPLORING BRAINLY.COM!!
    12·1 answer
  • Balance the following chemical equation _Na + _Br2 —&gt; _ NaBr
    5·1 answer
  • Differences between plant and animal cells, other than their vacuoles
    9·1 answer
  • A group of atoms that remain bonded together and behave as a single atom in a chemical reaction is
    15·1 answer
  • Explain how to identify a conjugate acid and a conjugate base in an acid base reaction.
    15·1 answer
  • A compound is made of 49.31% C, 43.79% 0 and the rest hydrogen. The molar
    9·1 answer
  • What happens to weather patterns when a cold front approaches? Answer in complete sentences. Its timed!! YOU WILL GET BRAINLIEST
    15·1 answer
  • Students in chemistry class have been given the assignment to use flame test emission data to determine the identity of an
    11·1 answer
  • What is the charge on Na and why is it called a cation?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!