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mars1129 [50]
2 years ago
14

Witch of the following isotopes would most likely be unstable and therefore radioactive?

Chemistry
1 answer:
STALIN [3.7K]2 years ago
5 0
The answer is D; Mercury-194
All of the others are not when I looked them up

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The halogens, alkali metals, and alkaline earth metals have __________ valence electrons, respectively.
natima [27]
The valence electrons are as follows for these groups of elements:

Halogen- SEVEN  (halogens are group 7 elements that need one electron for the octet rule to be achieved)

Alkali Metals - ONE  (these are group one elements that lose a single electron to form an octet and cation)

Alkaline Earth Metals - TWO (group two elements that lose two electrons to form 2+ cations)

8 0
2 years ago
Latent heat of vaporization is used to (1 Point) (a) overcome the forces of attraction between molecules in solid-state. (b) inc
Reil [10]

Answer:

Not sure what the answer is

Explanation:

I did this a while ago and dont remember sorry

4 0
2 years ago
analysis of a compound indicates that it contains 1.04 grams K 0.70 g Cr and 0.86 g O. Find its empirical formula
MrMuchimi
1.04gK*1molK/39.01g K= 0.0267 mol K
0.70gCr*1mol/52.0g Cr = <span>0.0135 mol Cr   
0.86 gO* 1 mol/16.0 g O = 0.0538 mol O
</span>0.0267 mol K/0.0135 = 2 mol K
0.0135 mol Cr  /0.0135= 1 mol Cr
 0.0538 mol O/0.035= 4 mol Cr
K2CrO4
6 0
2 years ago
Read 2 more answers
(14.1.50) 0.03 mol of helium are enclosed in a cylinder with a piston which maintains a constant pressure in the helium. Initial
icang [17]

Answer:

a) 0.210 j /k

b) 0.032 j/k

Explanation:

Find the attachment for solution

3 0
2 years ago
At one point in the video, someone is balancing a chemical reaction. The person writes a coefficient of 2 in front of Fe2O3 but
mario62 [17]

answer: the 4 is the product and the other numbers are reactants

Explanation:

i’m pretty sure that’s the answer . i did this last week :)

8 0
2 years ago
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