Which of the followin is not true about the structure of an alveoulus?

1 answer:

6 0

Alveoli is the thin structure which helps in exchange of gases ! it is 300 million in number and has epithelial tissue !

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Find the effective resistance of the circuit

frozen [14]

300 ohms as you can add the individual resistances together

3 0

3 years ago

Can someone help me with chemistry

Komok [63]

Answer:

The resulting pH will be greater than 7 because potassium hydroxide is less concentrated than the hydrochloric acid.

Explanation:

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3 0

2 years ago

Which of the following represents the mass of 1 molecule of SH2?

mr_godi [17]

Answer:
5.645 × 10⁻²³ g

Solution:

Step 1) Calculate Molar Mass of SH₂;

Atomic Mass of Sulfur = 32 g/mol

Atomic Mass of H₂ = 2 g/mol
--------------------
Molecular Mass of SH₂ = 34 g/mol

Step 2: Calculate mass of one molecule of SH₂ as;

As,

Moles = # of Molecules / 6.022 × 10²³

Also, Moles = Mass / M.Mass So,

Mass/M.mass = # of Molecules / 6.022 × 10²³

Solving for Mass,

Mass = # of Molecules × M.mass / 6.022 × 10²³

Putting values,

Mass = (1 Molecule × 34 g.mol⁻¹) ÷ 6.022 × 10²³

Mass = 5.645 × 10⁻²³ g

5 0

3 years ago

Read 2 more answers

Match the symbol for each element with the name of the element. 1. hydrogen K 2. helium Mg 3. sodium He 4. magnesium H 5. potass

insens350 [35]

Answer:

1. hydrogen - H

2. helium - He

3. sodium - Na

4. magnesium - Mg

5. potassium - K

Explanation: