A Jar Holds 2 $\mathrm { N } _ { 2 }$

question 52

Short Answer

A jar holds 2.0 L of ideal nitrogen gas, $\mathrm { N } _ { 2 }$ at STP. The atomic mass of nitrogen is 14.0 g/mol, the ideal gas constant is $R = 8.31 \mathrm {~J} / \mathrm { mol } \cdot \mathrm { K }$ Avogadro's number is $N _ { \mathrm { A } } = 6.022 \times$ $10^{23} \text { molecules/mol, }$ and 1.00 atm=101 kPa
(a) How many moles of nitrogen are in the jar?
(b) How many nitrogen molecules are in the jar?
(c) What is the mass of the nitrogen in the jar?

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Definitions:

Endodermal Cell

An endodermal cell is a type of cell originating from the innermost layer of the early embryo, contributing to the formation of the lining of the digestive and respiratory systems.

Stele

The cylinder in the center of roots and stems that contains the vascular tissue; also called vascular cylinder.

Pericycle

A layer of cells found just inside the endodermis in plant roots, involved in the formation of lateral roots and secondary growth.

Endodermis

The innermost layer of cells in the root cortex, serving as a selective barrier that regulates the passage of substances from the soil into the vascular cylinder.