250 mL of water is collected during a combustion reaction. The temperature in the

Chemistry

1 answer:

klio [65]3 years ago

7 0

Answer:

10.67 moles is the answers.hope it helped

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Please help me ill give brainiest to the right answer

valina [46]

Answer:

its c or a

Explanation:

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3 years ago

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How many moles of aluminum do 4.60x10^24 aluminum represent? Express your answer using three significant figures.

stiks02 [169]

Answer:

7.64 Moles

Explanation:

As we know one mole of any substance contains 6.022 × 10²³ particles (atoms, ions, molecules or formula units). This number is also called as Avogadro's Number.

The relation between Moles, Number of Particles and Avogadro's Number is given as,

Number of Moles = Number of Particles ÷ 6.022 × 10²³

Putting values,

Number of Moles = 4.60 × 10²⁴ Particles ÷ 6.022 × 10²³

Number of Moles = 7.64 Moles

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3 years ago

Calculate the volume of 12.0 g of helium at 100°c and 1.2 atm

hodyreva [135]

Volume = nRT/P

n = number of particles (moles)

R = universal gas constant (0.0821)

T = temperature (Kelvin)

P = pressure (atm)

(Assuming you have 1 mole of Helium in a chemical reaction) We would need to convert grams to moles: 12.0g He x 1 mol He/4 molar mass of He = 3 mol He

Convert Celsius to Kelvin: 100*C + 273.15 = 373.15 K

Now we can set up the equation for volume: (3mol)(0.0821)(373.15)/1.2atm = 76.6 L of Helium gas

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3 years ago

Which equation shows how wavelength is related to velocity and frequency?

Nataly_w [17]

Answer:

The correct option is the option;

$\lambda = \dfrac{v}{f}$

Explanation:

The wavelength of a wave is the distance between two successive crests of the wave

Therefore, the wavelength, λ, is given by the fraction of the velocity, <em>v</em>, of the wave divided by the frequency, <em>f</em>, (the number of cycles that pass through a point) of the wave

Mathematically, we have;

$The \ wavelength, \ \lambda = \dfrac{The \ wave \ velocity, \ v}{The \ wave \ frequency, \ f}$