Which of the following is not a steroid? A. insulin B. androgens C. estrogens D. cholesterol E. All of the above are steroids

Chemistry

1 answer:

Vladimir [108]3 years ago

3 0

Answer:

OptionA, Insulin

Explanation:

Steroids are organic compound having four fused ring arranged in specific configuration. The four fused rings are composed of 17 carbons.

Most common example of steroids includes Cholesterol, steroids hormones and bile salts.

Among given options, all are steroids except insulin.

Insulin is an endocrine hormone and released from pancreas. It is a non-steroid hormone.

Androgens and estrogens are sex hormones whereas cholesterol is a waxy substance present in blood plasma and animal tissues.

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How many molecules are in 5.50 grams of AgNO3?

mixas84 [53]

Answer:

1.95*10²² molecules are in 5.50 grams of AgNO₃

Explanation:

Being the molar mass of the elements:

Ag: 107.87 g/mole
N: 14 g/mole
O: 16 g/mole

then the molar mass of the compound is:

AgNO₃: 107.87 g/mole + 14 g/mole + 3*16 g/mole= 169.87 g/mole

Then you can apply the following rule of three: if 169.87 grams of the compound are present in 1 mole, 5.50 grams will be present in how many moles?

$moles=\frac{5.50 grams*1 mole}{169.87 grams}$

moles= 0.0324

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number applies to any substance.

You can apply the following rule of three: if by definition of Avogadro's Number 1 mole of the substance contains 6.023 * 10²³ molecules, 0.0324 moles how many molecules will it have?

$molecules=\frac{0.0324 moles*6.023*10^{23} molecules}{1 mole}$