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Flauer [41]
3 years ago
9

Air is about 78% nitrogen gas (N2) by mass. The molar mass of nitrogen gas is 28. 0 g/mol. A 100. 0-g sample of air contains how

many moles of nitrogen? 2. 8 3. 6 28 78.
Chemistry
1 answer:
andrezito [222]3 years ago
4 0

Answer:

fsadfd

Explanation:

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Explanation:

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What were the units of light energy emitted by blackbody radiation originally called?
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4 years ago
If a balloon containing 3000 L of gas at 39°C and 99 kPa rises to an altitude where the pressure is 45.5 kPa and the temperature
ludmilkaskok [199]

\tt =3000~L\times \dfrac{289}{312}\times \dfrac{99}{45.5}

<h3>Further explanation</h3>

Given

3000 L of gas at 39°C and 99 kPa to 45.5 kPa and 16°C,

Required

the new volume

Solution

Combined with Boyle's law and Gay Lussac's law  

\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}

T₁ = 39 + 273 = 312

T₂ = 16 + 273 = 289

Input the value :

V₂ = (P₁V₁.T₂)/(P₂.T₁)

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or we can write it as:

V₂ = 3000 L x (289/312) x (99/45.5)

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3 years ago
Which of the following is not a monoatomic ion?
Ipatiy [6.2K]

Answer:

wag kayo mag sagot bastos tong tao nato

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