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DIA [1.3K]
2 years ago
12

5. Which of the following personal protective equipment is selected based on a

Chemistry
2 answers:
algol132 years ago
4 0
Answer is A.respirator
lisov135 [29]2 years ago
3 0
Answer is A. Respirator
Reason

IDLH atmospheres require a full-face piece, pressure demand self-contained breathing apparatus (SCBA) or supplied-air respirator (SAR) with self-contained auxiliary air supply.
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A gas mixture contains HBr, NO2, and C2H6 at STP.If a tiny hole is made in the container, which gas will effuse fastest?Which ga
MakcuM [25]

Explanation:

Molar mass of HBr = 81 g/mol

Molar mass of nitrogen dioxide gas = 46 g/mol

Molar mass of ethane = 30 g/mol

Graham's Law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

So, the gas with least molar mass will effuse out fastest from the container and that is ethane gas.

The formula for average kinetic energy is:

K.E=\frac{3}{2}kT

where,

k = Boltzmann’s constant = 1.38\times 10^{-23}J/K

T = temperature = 273.15 K ( at STP)

As we can see from the formula that kinetic energy depends upon only temperature of the gas molecule.

So, from this we can say that all the gas molecules have the same average kinetic energy at this temperature.

5 0
3 years ago
Ignore this!<br><br>i got the answer already haha
marta [7]

Answer:

okay lol, ima use this for points if okay

Explanation:

5 0
3 years ago
A small motor does 4000 J of work in 20 s. What is the power of the motor in watts?
TEA [102]

Answer:

200 W

Explanation:

Formula of Power is

P= W/T

where

W= Work and T= Time

so

4000/20 = 200J/s or 200 W

6 0
2 years ago
Identify the total number of molecules in the chemical formula: 6CH4 a 6 b 10 c 24 d 30
Anon25 [30]

Answer: A.6

Explanation:

8 0
2 years ago
6th grade science help me please (:
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A. The atmosphere is layered
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