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nikdorinn [45]
3 years ago
12

Which change is most likely to occur when a molecule of H2 and a molecule of I2 collide with proper orientation and sufficient e

nergy? 1. a chemical change, because a compound is formed 2. a chemical change, because an element is formed 3. a physical change, because a compound is formed 4. a physical change, because an element is formed
Chemistry
2 answers:
bazaltina [42]3 years ago
8 0
The collision of the molecules between the hydrogen molecule or H2, and an iodine molecule or I2, provided there would be a sufficient energy is that the system would eventually undergo a chemical change wherein a new chemical compound would be formed from these two molecules.
pantera1 [17]3 years ago
7 0

Answer : The correct option is, (1) a chemical change, because a compound is formed

Explanation :

Physical change : It is a change in which no new compound or substance is formed only changes in the phase.

Chemical change : It is a change in which a new compound or substance is formed and also some energy releases. There is no changes occurs in the phase.

When a molecule of H_2 and a molecule of I_2 collide with proper orientation and sufficient energy then the chemical changes occurs due to the formation of the new compound.

Hence, the correct option is, (1) a chemical change, because a compound is formed

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What is the total number of neutrons in the nucleus of a neutral atom that has 19 electrons and a mass of 39?
JulsSmile [24]
20 because
mass no=electrons+neutrons
so to find neutrons
mass no-electrons=neutron
3 0
3 years ago
Given the three equations below, what is the heat of reaction for the production of glucose, C6H12O6, as described by this equat
UkoKoshka [18]

Answer:

- 1273.02 kJ.

Explanation:

This problem can be solved using Hess's Law.

Hess's Law states that <em>regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes. This law is a manifestation that enthalpy is a state function.</em>

  • We should modify the given 3 equations to obtain the proposed reaction:

<em>6C(s) + 6H₂(g) + 3O₂(g) → C₆H₁₂O₆(s),</em>

<em></em>

  • We should multiply the first equation by (6) and also multiply its ΔH by (6):

6C(s) + 6O₂(g) → 6CO₂(g), ∆H₁ = (6)(–393.51 kJ) = - 2361.06 kJ,

  • Also, we should multiply the second equation and its ΔH by (6):

6H₂(g) + 3O₂(g) → 6H₂O(l), ∆H₂ = (6)(–285.83 kJ) = - 1714.98 kJ.

  • Finally, we should reverse the first equation and multiply its ΔH by (- 1):

6CO₂(g) + H₂O(l) → C₆H₁₂O₆(s) + 6O₂(g), ∆H₃ = (-1)(–2803.02 kJ) = 2803.02 kJ.

  • By summing the three equations, we cam get the proposed reaction:

<em>6C(s) + 6H₂(g) + 3O₂(g) → C₆H₁₂O₆(s),</em>

<em></em>

  • And to get the heat of reaction for the production of glucose, we can sum the values of the three ∆H:

<em>∆Hrxn = ∆H₁ + ∆H₂ + ∆H₃ =</em> (- 2361.06 kJ) + (- 1714.98 kJ) + (2803.02 kJ) = <em>- 1273.02 kJ.</em>

6 0
2 years ago
Read 2 more answers
Give the name and symbol or formula of a Group 5A(15) element or compound that fits each description or use:(c) Oxide used as a
Sonja [21]

It is possible to dehydrate neutral and basic gases, amines, low-boiling alcohols, and ethers using calcium oxide, a basic drying agent. its chemical formula is CaO.

CaO cannot be substituted with sulfuric acid. Because the salt ammonium sulfate is created when sulphuric acid and ammonia combine, this is the case. Calcium oxide is a solid that is odorless, white, gray-white, and appears as hard lumps. powerful skin, eye, and mucous membrane irritant. used in fertilizers and pesticides. The group of calcium oxides with a 1:1 ratio of calcium to oxygen includes calcium oxide. It functions as fertilizer.

Learn more about calcium oxide here-

brainly.com/question/14259922

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4 0
1 year ago
There are two jars A and B containing food materials. Food in jar 'A' is picked with acetic acid while 'B' is not. food of which
levacccp [35]

acetic acid is one of popular food preservative so jar A food will not stale as quickly compared to jar B

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3 years ago
A reproducible measurement is an accurate one. A. True B. False
4vir4ik [10]
The answer is
B. False
5 0
2 years ago
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