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german
3 years ago
9

100 POINTS!!!! Please I need this page done lol

Chemistry
1 answer:
Alenkinab [10]3 years ago
5 0

Answer:

okay.. Questions?????????

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The volume of a fixed amount of gas is double and the absolute temperature os doubled according to the ideas gas law how has the
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Given that <span>P=<span><span>nRT/</span>V</span></span><span>, for an ideal gas, the pressure would be unchanged.</span>
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5. How many moles of NaCl will it take to make 3.0 L of<br> a 0.1 M solution?
Ilia_Sergeevich [38]

Answer:

0.30 mole NaCl needed.

Explanation:

From the definition of solution molarity => Molarity = moles solute / Volume of Solution in Liters => Molarity = moles/Volume(L) => solve for moles =>

moles = Molarity X Volume(L) = (0.1M)(3.0L) = 0.30 mole NaCl needed.

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3 years ago
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Tasya [4]

Answer:

450.0

Explanation:

7 0
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Use the de Broglie's Wave Equation to find the wavelength of an electron moving at 7.3 × 106 m/s. Please show your work. Note: h
ad-work [718]

Answer:

\lambda=9.96\times 10^{-11}\ m

Explanation:

The expression for the deBroglie wavelength is:

\lambda=\frac {h}{m\times v}

Where,  

\lambda is the deBroglie wavelength  

h is Planck's constant having value 6.62607\times 10^{-34}\ Js

m is the mass of electron having value 9.11\times 10^{-31}\ kg

v is the speed of electron.

Given that v = 7.3\times 10^6\ m/s

Applying in the equation as:

\lambda=\frac {h}{m\times v}

\lambda=\frac{6.62607\times 10^{-34}}{9.11\times 10^{-31}\times 7.3\times 10^6}\ m

\lambda=\frac{10^{-34}\times \:6.626}{10^{-25}\times \:66.503}\ m

\lambda=\frac{6.626}{10^9\times \:66.503}\ m

\lambda=9.96\times 10^{-11}\ m

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3 years ago
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Ymorist [56]

Answer:

I and III

Explanation:

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