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
andrey2020 [161]
2 years ago
6

Which process is exothermic?

Chemistry
2 answers:
Sav [38]2 years ago
5 0

Answer: c. condensation of ethanol vapor

Explanation: An endothermic reaction is a type of of chemical reaction in which energy is absorbed from the surrounding. The temperature of the surrounding decreases.

An Exothermic reaction is a type of of chemical reaction in which energy is released into the surrounding. The temperature of the surrounding increases.

a.boiling of water: This involves conversion of liquid to gas and thus require energy and is endothermic.

b.melting of copper: This involves conversion of solid to liquid and thus require energy and is endothermic.

c. condensation of ethanol vapor:  This involves conversion of vapor to liquid and thus release energy and is exothermic.

d.sublimation of iodine: This involves conversion of solid to gas and thus require energy and is endothermic.

valkas [14]2 years ago
4 0
The exothermic process is a process or reaction that involves a release of energy from the system to its surroundings in various forms usually through heat, light, electricity or sound. In the four given choices, when melting a copper, you try to immerse the metal in  heaping coals of fire. The metal will absorb the thermal energy coming from the coal, thus, once you retrieve the metal back, light will be emitted from it as well as heat.

Therefore, the answer is B. MELTING OF COPPER
You might be interested in
What are some ways you can divide these dogs into groups?
anygoal [31]
Big dogs and short dogs, short hair and long hair, pointy ears and droopy ears
5 0
3 years ago
Read 2 more answers
What does a low number on the pH scale say about a solution? O A. The solution is changing, OB. The solution is an acid. O C. Th
Amanda [17]

Answer: B) The solution is an acid.

Explanation:

5 0
2 years ago
Read 2 more answers
How many orbitals in 3rd shell is axial
Firlakuza [10]

Answer:

6 orbitals

Explanation:

you take the total number of orbitals there would normally be and add that to three and you get a total of 6 orbitals in axial.

3 0
3 years ago
Read 2 more answers
ASAP , 8.81 g Carbon
xz_007 [3.2K]

The empirical formula : C₂Cl₇

The molecular formula : C₁₀Cl₃₅

<h3>Further explanation</h3>

Given

8.81 g Carbon

91.2 g Chlorine

Molar Mass: 1362.5 g/mol

Required

The empirical formula and molecular formula

Solution

Mol ratio :

C = 8.81 g : 12.011 g/mol =0.733

Cl = 91.2 g : 35,453 g/mol = 2..572

Divide by 0.733

C : Cl = 1 : 3.5 = 2 : 7

The empirical formula : C₂Cl₇

(The empirical formula)n = the molecular formula

(C₂Cl₇)n = 1362.5

(2x12.011+7x35.453)n=1362.5

(272.193)n=1362.5

n = 5

6 0
3 years ago
Which statement is true? Postively charged objects attract other positively charged objects negatively charged objects attract o
ANEK [815]

Answer:

Explanation:one is true because if it is positiveit would not be attracting it would be sepperating

8 0
2 years ago
Other questions:
  • Calculate the molar solubility of calcium hydroxide in a solution buffered at each ph.
    8·2 answers
  • What do you think the volume of a perscription bottle would be?<br> plz help me
    11·1 answer
  • Please help quick!!!!!
    7·1 answer
  • What is always true of a weak base
    13·1 answer
  • A Grignard reagent and a ketone are reacted in ether solution and, followed by an acid workup, form a tertiary alcohol. Recall t
    14·1 answer
  • The sodium content of twenty 300-gram boxes of organic cornflakes was determined. The data (in milligrams) are as follows: 131.1
    11·1 answer
  • heeellllllllllllllllllllllpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
    12·1 answer
  • How much heat energy is obtained when 1 kg of ethane gas, C2H6, is burned in oxygen according to the equation: 2C2H6(g)+7O2(g)→4
    9·1 answer
  • PLEASE HELP ME!!!!! I NEED REAL HELP PLEASE I KEEP GETTING NON REAL ANSWERS!!
    15·1 answer
  • A buffer that contains 0.34 M of an acid, HA and 0.37 M of its conjugate base A-, has a pH of 3.26. What is the pH after 0.032 m
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!