True
False
Answer:
Hi there, the answer is true
Explanation:
:D
The mass in grams of one molecule of cholesterol, C27H46O is6.43×10⁻²² g
6.02×10²³ molecules = 1 mole of Cholesterol
But,
1 mole of Cholesterol = 387 g
Thus,
6.02×10²³ molecules = 387 g mole of Cholesterol
6.02×10²³ molecules = 387 g mole of Cholesterol
1 molecule = 387 / 6.02×10²³
1 molecule = 6.43×10⁻²² g of Cholesterol
Thus, the mass of 1 molecule of cholesterol is 6.43×10⁻²² g
Learn more about Avogadro's number:
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The molar mass of cholesterol = 386.654 g/mol = 387 g/mole
3.2 mg cholesterol x 1 g/1000 mg x 1 mole/387 g x 6.02x1023 molecules/mole = 5.0x1018 molecules.
The changes shown are physicalchanges because when ice melts, it turns from solid to liquid.
Physical changes are when a substance changes in how it looks or acts without turning into something else. These changes can usually be undone, which means the substance can be brought back to how it was before.
When ice melts, it turns from solid to liquid. The tiny particles in the ice move around, but the stuff that makes up water stays the same. The process can go backwards, because the water that is a liquid can be turned back into ice.
When water gets really hot, it turns into gas called steam. The water molecules get enough energy to separate from each other and become vapor. Once again, the stuff that makes up water stays the same, and when steam cools down, it turns back into liquid water.
Learn more on physical changes on brainly.com/question/960225
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Answer:
Because physical change are reversible change. we can reverse into the orginal effect.
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Good Morning
Answer : A particle that orbits the nucleus in an atom is called an Electron
Hint : Electron, negatively charged particle orbiting the nucleus. Same number as protons in neutral atoms
I hope that's help !
Happy Sunday :)
H2S
HSO4
H2SO4
H2SO3
The correct answer is H2SO3 I took the assignment already