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Artist 52 [7]
2 years ago
10

can someone please answer this please even just the first one, I really need the answer please help me with it, thank you....✨​

Chemistry
1 answer:
pishuonlain [190]2 years ago
3 0

Answer:

Indonesia and all of the above

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Ergosterol, a precursor of vitamin D, has δmax = 282 nm and molar absorptivity ε = 11,900 M-1cm-1. What is the concentration of
meriva

Answer:

3.6 × 10⁻⁵ M

Explanation:

Ergosterol has a maximum absorbance at λ = 282 nm. The absorbance of an analyte is related to its concentration through the Beer-Lambert's law.

A = ε × <em>l</em> × c

where,

A: absorbance

ε: molar absorptivity

<em>l</em>: optical path length

c; molar concentration

c = A / ε × <em>l </em>= 0.43 / (11,900 M⁻¹cm⁻¹) × 1.00 cm = 3.6 × 10⁻⁵ M

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3 years ago
Arrange steps in order to describe what happens to a gas when it is cooled
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2 years ago
PLEASE HELP ME WITH A COUPLE OF QUESTIONS!!! Thank You :)
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To explain the photoelectric effect, Albert Einstein linked the photoelectric effect to an idea from which scientist?
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Why Basalt and gabbro are denser than granite and<br> obsidian?
Maksim231197 [3]

Answer:

What do you think causes some rock types to have higher densities than others? (Assuming there are no air pockets in the rock, the types of minerals will determine the density. Granite contains lots of quartz and feldspar - both fairly light minerals, whereas basalt and gabbro are made of heavier minerals.)

Explanation:

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