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s2008m [1.1K]
3 years ago
14

Menstruation occurs on a ______ interval from puberty until menopause

Chemistry
1 answer:
dmitriy555 [2]3 years ago
8 0
D. One Month Interval
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What is the maximum number of electrons that can occupy a box in an orbital filling diagram at any energy level?
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Answer: 2

Explanation:

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4 years ago
Which observation shows that a substance is malleable?
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A

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Which of the following would be expected to be good solvents for cyclopentane. Choose all that apply. toluene, CgH5CH3 cyclohexa
Alik [6]

Answer:

cyclohexane

Explanation:

Solubility is determined by the principle ,  "like dissolves like" .

i.e. , if a compound is polar then it will dissolve in a polar compound only , and

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Hence , from the question ,

a good solvent for cyclopentane would be cyclohexane ,

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8 0
3 years ago
A newly discovered element, Z, has two naturally occurring isotopes. 90.3 percent of the sample is an isotope with a mass of 267
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atomic mass=percentage of isotope a * mass of  isotope a + percentage of isotope b * mass of  isotope b+...+percentage of isotope n * mass of isotope n.

Data:
mass of isotope₁=267.8 u
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mass of isotope₂=270.9 u
percentage of isotope₂=9.7%

Therefore:

atomic mass=(0.903)(267.8 u)+(0.097)(270.9 u)=
=241.8234 u + 26.2773 u≈268.1 u

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<span>It means that your combining those two chemical substances</span>
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4 years ago
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