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Sergio039 [100]
3 years ago
7

Why might one sample of sulfur have a glassy luster while another has a dull, earthy luster? Explain

Biology
1 answer:
grigory [225]3 years ago
8 0

Allotropy

Explanation:

Allotropy is existence of a chemical element in two or more different states. When an element exists in more than one physical state, they are said to be allotropes.

Many different substances exhibits allotropy and it largely impacts their physical state.

Carbon has two main allotropes; graphite and diamond. Graphite is a soft substance and can easily be broken. Diamond is the hardest natural substance that is known.

  • A sulfur with a glassy luster and another with a dull earthy luster signifies two sulfur allotropes.

Learn more:

Variable composition brainly.com/question/2043894

#learnwithBrainly

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The statement that best describes he purpose of examining mammary secretions in mares before parturition is testing for elevated levels of calcium.

<h3>What is the processes of parturition in mares?</h3>

In parturition, a fetus is fully developed, a process called Ferguson reflex occurs to stimulate contractions. The canal is lubricated by a fluid called allanotic fluid and facilitates the discharge of the amnion and the fetus. A virginal distension releases oxytocin and more contractions.

For a mare to be ready for parturition, elevated levels of calcium is tested from the mammary gland to confirm that the mare is healthy and ready for parturition.

Learn more on parturition here: brainly.com/question/14982881

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