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
gregori [183]
3 years ago
8

What type of reaction is shown in this thermochemical equation? A + B + heat → C + D

Chemistry
2 answers:
Mademuasel [1]3 years ago
5 0

Answer: Option (a) is the correct answer.

Explanation:

A chemical reaction in which there will be absorption of heat energy by the reactant molecules is known as endothermic reaction.

For example, A + B + Heat \rightarrow C + D is an endothermic reaction.

On the other hand, a chemical reaction in which there will be release of heat energy is known as an exothermic reaction.

For example, A + B \rightarrow C + D + Heat is an exothermic reaction.

Therefore, we can conclude that the given thermochemical equation A + B + Heat \rightarrow C + D shows endothermic type of reaction.

hodyreva [135]3 years ago
3 0
The reaction, as what is depicted in the thermonuclear equation is one of the best example of an endothermic reaction. In addition, the endothermic process revolves around the idea that the system can also absorb the energy from its surroundings, in contrast to the idea of releasing its energy to its environment. 
You might be interested in
Based on your graph in the Periodic Trends Lab, what is the relationship between atomic radius and ionization energy ?
maxonik [38]
As the atomic radius decreases, it becomes harder to remove an electron that is closer to a more positively charged nucleus. ... They experience a weaker attraction to the positive charge of the nucleus. Ionization energy increases from left to right in a period and decreases from top to bottom in a group.
6 0
3 years ago
Carbon-14 is a common isotope of the element. How many electrons
eimsori [14]
I think 8 or 6 im not sure
5 0
3 years ago
Which of the following metals is in a liquid state at room temperature?
SpyIntel [72]
The answer is c. hg (mercury)
5 0
3 years ago
Use the following equation to answer question 1-4. Make sure you balance first.
worty [1.4K]
<h3>Answer:</h3>

5.2 mol H₂O

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Chemistry</u>

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

[RxN - Balanced] 6HCl + Fe₂O₃ → 2FeCl₃ + 3H₂O

[Given] 10.4 mol HCl

<u>Step 2: Identify Conversions</u>

[RxN] 6 mol HCl = 3 mol H₂O

<u>Step 3: Stoichiometry</u>

  1. Set up:                             \displaystyle 10.4 \ mol \ HCl(\frac{3 \ mol \ H_2O}{6 \ mol \ HCl})
  2. Multiply/Divide:               \displaystyle 5.2 \ mol \ H_2O
4 0
3 years ago
A percent composition analysis yields
siniylev [52]

Answer:

PCl₃

Explanation:

To determine the empirical formula of a compound, we need to follow a series of steps.

Step 1: Divide each percent composition by the atomic mass of the element

P: 22.6/30.97 = 0.729

Cl: 77.4/35.45 = 2.18

Step 2: Divide all the numbers by the smallest one, i.e. 0.729

P: 0.729/0.729 = 1

Cl: 2.18/0.729 ≈ 3

The empirical formula of the compound is PCl₃.

3 0
3 years ago
Other questions:
  • (4 marks)
    9·1 answer
  • Is a pH of 7 high pH or neutral??
    11·2 answers
  • Lipids that are liquid at room temperature are called oils <br> a. True <br> b. False
    11·1 answer
  • Which of the following describes a community?
    15·2 answers
  • Of the following, which can be used to identify an element present in a sample?
    11·1 answer
  • Which represents the empirical formula for a3B9
    8·1 answer
  • A student needed to make a 3 g/L NaCl solution. The student weighed 3 g of NaCl in a beaker and measured 1 L of water in a 1L vo
    10·1 answer
  • A sealed vessel initially contains 100 g of chlorine gas and 90 g of hydrogen gas. The two gases undergo reaction to form HCl. W
    9·1 answer
  • 2C_H. + 702 — 400, + 6H2O
    9·1 answer
  • One of the basic building blocks of matter, which cannot be broken down by chemical means is a(n)______ , of which there are 92
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!