**Answer:**

**Explanation:**

<u>1) Data:</u>

a) n = ?

b) V = 50.0 dm³ = 50.0 liter

c) p = 100.0 kPa

d) T = 50 °C

<u>2) Physical law:</u>

<u>3) Constants:</u>

- R = 0.08206 atm-liter / K-mol

<u>4) Unit conversions:</u>

- T = 50 + 273.15 K = 323.15 K

- P = 100.0 kPa × (1 amt /101,325 kPa) = 0.9869 atm

<u>5) Solution:</u>

- n = 0.9869 atm × 50.0 liter / (0.08206 atm-liter /K-mol × 323.15 K)

**Answer:**

Chromosomes

**Explanation:**

A karyotype is an individual's collection of chromosomes

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**Answer:**

169

**Explanation:**

protons+neutrons=atomic mass

70+99=169

**Answer:**

When the fluid is forced to flow over a surface it is external forced convection. When the fluid is forced to flow in a tube it is Internal forced convection. It is possible to have both Internal and external convection simultaneously as is case of pipe transporting a fluid in a windy area.

**Explanation:**