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OleMash [197]
3 years ago
9

Please help will give brainliest

Chemistry
2 answers:
professor190 [17]3 years ago
6 0
A slow moving object experiences more air resistance then a fast moving object
Nadusha1986 [10]3 years ago
4 0
A slow moving object experiences more air resistance than a fast moving object , it’s the second one
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Determine the pressure, in atm, for 3.66 Liters of NH3 gas at a temperature of 298 K and a
Dafna1 [17]

Answer:

3.92 atm

Explanation:

The formula for the pressure of a gas is P = nRT/V. We have the following:

R - 0.0821 (gas constant)

T - 298 K

V - 3.66 L

n - ? (in moles)

We have to find the moles of the NH₃ gas. To do that, we have to divide the mass of the NH₃ gas by the molar mass of NH₃.

10.0 g × 1 mol NH₃/17.03 g NH₃ = 0.587 moles (rounded to 3 decimal places)

Now we have all the information needed to solve for the pressure.

P = nRT/V

P = (0.587)(0.0821)(298) ÷ 3.66

P = 14.3614246 ÷ 3.66

P = 3.923886503 ⇒ 3.92 atm (rounded to 3 decimal places)

The pressure of the NH₃ gas at a temperature of 298 K and a mass of 10.0 g is 3.92 atm.

Hope that helps.

8 0
3 years ago
The gap between plates at divergent boundaries is filled with a. rock
andriy [413]
D magma because the plates are underneath the crust and underneth the plates are magma and then the (thought to be) iron core

7 0
3 years ago
What is a radioactive tracer? Give an example of how one might be used.
Norma-Jean [14]
Uses for radioactive tracers is to look for flaws in metal objects and are also used by doctors to x-ray images to look at your bones.
3 0
4 years ago
How is the value of an atomic number detirme?
serious [3.7K]

The number of protons in the nucleus determines the atomic number of an element.

Every element has its own characteristic atomic number.

4 0
4 years ago
a particular application calls for N2 g with a density of 1.80 g/L at 32 degrees C what must be the pressure of the n2 g in mill
baherus [9]

Answer:

1223.38 mmHg

Explanation:

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 62.3637\text{ L.mmHg }mol^{-1}K^{-1}

Also,  

Moles = mass (m) / Molar mass (M)

Density (d)  = Mass (m) / Volume (V)

So, the ideal gas equation can be written as:

PM=dRT

Given that:-

d = 1.80 g/L

Temperature = 32 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (32 + 273.15) K = 305.15 K

Molar mass of nitrogen gas = 28 g/mol

Applying the equation as:

P × 28 g/mol  = 1.80 g/L × 62.3637 L.mmHg/K.mol × 305.15 K

⇒P = 1223.38 mmHg

<u>1223.38 mmHg must be the pressure of the nitrogen gas.</u>

5 0
3 years ago
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