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
Identify all statements that accurately describe the structure of the pyruvate dehydrogenase ( PDH ) complex.
Nostrana [21]

Answer:

The statements that correctly describes pyruvate dehydrogenase includes:

- Several copies each of E 1 and E 3 surround E 2.

-A regulatory kinase and phosphatase are part of the mammalian PDH complex.

-E 2 contains three domains.

Explanation:

Pyruvate dehydrogenase is a hydrolase key enzyme in glucose metabolism which converts pyruvate to acetyl- ChoA. It also forms a complex that catalyzes an irreversible reaction that is the entry point of pyruvate into the TCA cycle. Pyruvate dehydrogenase complex contains E1, E2 and E3 enzymes that transform pyruvate, NAD+, coenzyme A into acetyl-CoA, CO2, and NADH. Also, A regulatory kinase and phosphatase are part of the mammalian PDH complex and E 2 contains three domains.

5 0
3 years ago
Calculate the frequency (in Hertz) of light with a wavelength of 420 nm. What color is the light?
BabaBlast [244]
Speed of light is 3.0*10^8
frequency = wavelength / speed
= 1400 Hz
3 0
3 years ago
i need help i have a homework assignment to finish and this is the last question help please and thank u
Jet001 [13]
A
i just searched it up and wanted to help
5 0
3 years ago
Round off the following numbers to the number of significant figures (sf) indicated.
Flura [38]

Answer:

a. 7.52

b. 16.5

c. 85

d. 6.03

Explanation:

significant number exempts 0 as a number which explains the last one. The two significant numbers there are 6 and 3

6 0
3 years ago
Read 2 more answers
A 25.0-mL sample containing Cu2+ gave an instrument signal of 25.2 units (corrected for a blank). When exactly 0.500 mL of 0.027
irga5000 [103]

Answer:

The molar concentration of Cu²⁺ in the initial solution is 6.964x10⁻⁴ M.

Explanation:

The first step to solving this problem is calculating the number of moles of Cu(NO₃)₂ added to the solution:

C = \frac{n}{V} \\0.0275 = \frac{n}{0.0005} \\

n = 1.375x10⁻⁵ mol

The second step is relating the number of moles to the signal. We know the the n calculated before is equivalent to a signal increase of 19.9 units (45.1-25.2):

1.375x10⁻⁵ mol _________ 19.9 units

        x              _________  25.2 units

x = 1.741x10⁻⁵mol

Finally, we can calculate the Cu²⁺ concentration :

C = 1.741x10⁻⁵mol / 0.025 L

C = 6.964x10⁻⁴ M

7 0
3 years ago
Other questions:
  • "The occurrence of the all-or-none ________________ results from depolarization in response to rapid entry of ____________ ions
    8·2 answers
  • What is the molarity of a solution prepared by dissolving 10.0 grams of NaOH in enough water to make a solution with a total vol
    14·2 answers
  • In an exothermic reaction the bonding energy of the product is:
    6·2 answers
  • Who discovered the nucleus by bombarding gold foil with positively charged particles and noting that some particales were widely
    15·1 answer
  • In the reaction aA + bB >> dD, the lowercase letters represent?
    9·1 answer
  • 4. It takes a car one minute to go from rest
    7·1 answer
  • Describe the chemical reaction based on the chemical equation below also whether the equation is balanced
    5·1 answer
  • Two raw materials used in manufacturing of indenouse soap
    6·1 answer
  • What is the molarity of a solution in which 211g sodium hydrogen carbonate is dissolved in a 10.0L solution?​
    7·1 answer
  • Bob and Ada are camping and have sweet potatoes wrapped in foil to eat. Ada put her sweet potato in the bonfire for a while, but
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!