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hjlf
3 years ago
11

Classify the molecules based on whether the molecule has a standard enthalpy of formation, AH;, equal to 0. Assume all

Chemistry
1 answer:
Semmy [17]3 years ago
4 0

The standard enthalpy of formation of substance in its standard state is zero.

Enthalpy is defined as a thermodynamic quantity that describes the energy of a system. For substances in their standard state, the enthalpy of formation is zero.

The standard state of a substance is defined as the state in which it is found under standard conditions.  The following substances has their standard ethalpy of formation as zero or not zero;

Zero enthalpy of formation           Non zero enthalpy of formation

Cl2(g)                                                     I2(s)

Br(g)                                                       Br2(l)

I2(g)                                                       Br2(s)

Hg(l)                                                       Hg(s)

Learn more: brainly.com/question/13164006

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In pea plants, yellow seeds are dominant to green seeds. A heterozygous yellow-
san4es73 [151]

Answer:

The phenotypic percentage of having yellow or green seeds is 50% for having either of the two colours

Explanation:

The crossing to determine the offsprings is shown in the image attached where we have two green (Yy) seeds and two yellow (yy) seeds as offsprings.

Thus, <u>the phenotypic percentage of having yellow or green seeds is 50% for having either of the two colours</u>.

Note, the dominant allele is "Y" while the recessive allele is "y". Thus, Yy would produce a yellow colour while yy would produce a green colour (as both mentioned in the question).

Also note that phenotype describes the outward properties/characteristics of an individual.

3 0
3 years ago
train travel from hong kong to beijing it traveled at an average speed of 160 km/m in the first 4 hours. after that it traveled
Nonamiya [84]

Answer:

7 hours

Explanation: step 1. 160x4=640

step 2. 1180-640=540

step 3. 540÷180=3

step 4. 3+4=7

5 0
4 years ago
Read 2 more answers
PLEASE HELP
WITCHER [35]
The right answer is high number of offspring produced. asexual reproduction only requires on orgainism and creates an identical copy leaving no room for an increase of intelligence. plus it creates much more offspring and more often than sexual reproduction.
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Is pain reliever a prescription drug?
maria [59]

it is not a prescription drug

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3 years ago
Identify each definition that applies to the compound in red. Check all that apply. Upper F superscript minus in red plus upper
likoan [24]

The fluoride ion in the reaction has been the acceptor of the hydrogen. Thus, the fluoride ion has been the Brønsted Lowry base.

<h3 /><h3>What is the Brønsted Lowry acid and base concept?</h3>

The Brønsted Lowry acid and base concept can be described based on the proton acceptor and donor. The Brønsted Lowry acid has been the proton donor, and the Brønsted Lowry base has been the proton acceptor.

The Arrhenius concept is based on hydrogen and hydroxide donors. The Arrhenius base has been the hydroxide donor, and the Arrhenius acid has been the hydrogen donor.

Since the fluoride ion has been the proton acceptor in the reaction, it has been the Brønsted Lowry base.

Lear more about Brønsted Lowry acid and base, here:

brainly.com/question/21736327

4 0
2 years ago
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