Calebwando9570 Calebwando9570

06-02-2020
Chemistry

contestada

What is the molecular weight of a gas if a 12.0 g sample has a pressure of 836 mm Hg at 25.0°C in a 2.00 L flask? (R= 0.0821 L atm/ mol K)

Respuesta :

Eduard22sly Eduard22sly

06-02-2020

Answer: 133.3g/mol

Explanation:

Mass = 12g

V = 2L

R = 0.0821 L atm/ mol K

P = 836mmHg = 836/760 = 1.1atm

T = 25°C = 25 + 273 = 298K

n =?

n = PV /RT = (1.1x2)/(0.0821x298)

n = 0.09

Molar Mass = Mass / n

Molar Mass = 12/0.09

Molar Mass = 133.3g/mol

Answer Link

Otras preguntas

Precipitation reactions: Hg(NO3)2(aq) +Na2CrO4(aq) = _________ (aq) + NaNO3 (s)

what were some of the conditions that soldiers on the front lines had to face

A total of $8000 is invested: part at 7% and the remainder at 11%. How much is invested at each rate if the annual interest is $760?

What were the key elements and financial innovations that made Florence and Venice financial centres of the world?

what is 18% of 34. what is 27% of 81

How did France become the leading power of Europe under the absolute of Louis XIV

A crate is acted upon by a net force of 100N. An acceleration of 5.0 m/s^2 results. What is the rate of the crate?

why did immigrants and rural migrants move to cities?

At STP, 4 liters of O2 contains the same total number of molecules as (1) 1 L of NH3 (3) 8 L of He (2) 2 L of Cl2 (4) 4 L of CO2

Two standard number cubes are rolled. Find each probability. 15. P(a sum equal to 2)