3 years ago

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

olya-2409 [2.1K]

Given that P=nRT/V, for an ideal gas, the pressure would be unchanged.

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3 years ago

5. How many moles of NaCl will it take to make 3.0 L of 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

RIGHT ANSWERS ONLY !!!

Tasya [4]

Answer:

450.0

Explanation:

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3 years ago

Read 2 more answers

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

PLEASE HELP I DONT UNDERSTAND A THING

Ymorist [56]

Answer:

I and III

Explanation:

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3 years ago