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2 years ago

27 Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!

Chemistry

1 answer:

zvonat [6]2 years ago

3 0

Hello Human!!

The answer is below!!

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14. The answer is C. Mass

15. I think the right answer is C. Melting point

16. I don't know this is right.... D. Ability to oxidize

17. I also don't know this right as well... So A. Generally, a gas is in the gaseous state at room temperature and a vapor is in either the solid state or liquid state at room temperature.

P.S Tell me if this wrong....

$GoodLuck!!$

# $Be$ $Bold$

# $LearnWithBrainlyAlways$

$_{Itbrazts}$

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naturally occurring bromine molecules, br2 have masses of 158, 160, and 162. they occur in the relative abundances 25.69%, 49.99

4vir4ik [10]

The average atomic mass of an element can be determined by multiplying the individual masses of the isotopes with their respective relative abundances, and adding them.

Average atomic mass of Br = 158 amu(0.2569) + 160 amu(0.4999) + 162 amu(0.2431)
Average atomic mass = 159.96 amu

As described in the problem, the relative abundance for Br-79 is 25.69%. This is because 2 atoms of Br is equal to 79*2 = 158 amu. Similarly, the relative abundance of Br-81 is 81*2 = 162, which is 24.31%.

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2 years ago

Generally, systems move spontaneously in the direction of increasing entropy. TRUE FALSE

allochka39001 [22]

Answer:

true

Explanation:

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2 years ago

Calculate the ΔG°' for the reaction with 3 significant figures with no label for the dimension (just the number). fructose-6-pho

seraphim [82]

Answer:

ΔG° = 1747.523

Explanation:

The parameters mentioned are;

Gibbs Free energy ΔG°

Equilibrium constant Kc

Temperature T = 37 + 273 = 310 (upon conversion to kelvin temperature)

The formular relating all three parameters is given as;

ΔG° = -RTlnKc

Where; R = rate constant = 8.314 J⋅K−1⋅mol−1

Upon solving;

ΔG° = - 8.314 * 310 * ln(1.97)

ΔG° = 1747.523

6 0

2 years ago

Which noble gas is closest to magnesium

Charra [1.4K]

If you go backwards two elements, you will find Neon (Ne). If you go forwards six, you will find Argon (Ar). so the closest will be neon

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2 years ago

How many valence electrons are in Tc

mixer [17]

Tc is Technetium, and it has an atomic number of 43. Its atomic configuration is [Kr] 5s(1) 4d(5) [I'm on my phone so I can't do numbers on shoulders, pretend that 1 and 5 are on the s and d's shoulder]
The outside most ring is the 4d(5), and the d orbital can hold ten electrons.
Valence electrons are electrons, in you could say the outside ring that isn't filled, the extra ones. In this case, there are 5.

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2 years ago