# What is the viscosity of air at STP?

## What is the viscosity of air at STP?

The kinematic viscosity of air at 15 °C is 1.48 × 10-5 m2 /s or 14.8 cSt. At 25 °C, the viscosity is 18.6 μPa·s and the kinematic viscosity 15.7 cSt.

## What is the dynamic viscosity of air at 20 C?

Kinematic viscosity of air at 20°C is given to be 1.6 × 10-5 m2/s.

**What is density of air at STP?**

1.2754 kg / m³

For example, the standard air density for STP is ρ₀ = 1.2754 kg / m³ , for NIST is ρ₀ = 1.2923 kg / m³ and for SATP is ρ₀ = 1.1684 kg / m³ .

**Which has higher viscosity water or air?**

Water, under normal temperatures, is about 50 times more viscous than air. Ice is 5 × 1016 times more viscous than air. One concludes that, in general, solids have extremely high viscosities whereas fluids have low viscosities.

### How do you find the viscosity of air?

Viscosity of Air Calculator

- Formula. u = ( b * T^(3/2)) / (T+S)
- Temperature.
- b.
- S.

### What is the viscosity of air at 30 degrees Celsius?

Answer. 1.205 × 10−3 g cm−3 and ν = 0.15 cm2 s−1.

**What is the standard air?**

Standard air is defined as dry air at 70 F and 14.696 psia, with a density of 0.075 lb/ft 3 (20 C and 101.325 kPa absolute, with a density of 1.204 kg/m).

**Which has highest viscosity?**

Glycol has maximum viscosity because it has two −OH groups and there is greater intermolecular H−bonding in comparison to water and methanol. Kerosene is a mixture of hydrocarbons.

#### What is the most viscous gas?

Viscosity has the SI units Pascal seconds (Pa s) which is called the Poiseuille. More commonly used is the dyne sec/cm2 which is called Poise. One Pa s is 10 Poise….Viscosity of Liquids and Gases.

Gases | Viscosity (Poise) |
---|---|

Nitrogen | 0.00018 |

Oxygen | 0.00020 |

Water vapor (steam) | 0.00013 |

#### What is the density and viscosity of air?

Properties of Air at atmospheric pressure

Temperature (T) | Density (ρ) | Dynamic Viscosity (μ) |
---|---|---|

-10 | 1.3426 | 1.6731 |

-5 | 1.3175 | 1.6982 |

0 | 1.2933 | 1.7231 |

5 | 1.2699 | 1.7478 |

**What are the properties of standard air?**

The properties of air are:

- Air takes up space.
- Air has mass.
- Air is affected by heat.
- Air exerts pressure.
- Air can be compressed.
- Air is affected by altitude.

**What is the volume at STP?**

22.4 L

At STP, one mole of gas occupies 22.4 L of volume (molar volume).

## Which of the following has lowest viscosity?

1 Answer. Water has the lowest viscosity.

## Which is the least viscous?

The least viscous at any temperature must be superfluid liquid helium.