The Avogadro`s number is 6.022 × 10 ^ 23 or 6.0221409 × 10^23
Avogadro`s number is the number of units in one mole of any substance :)))
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D, T<span>he total mass of hydrochloric acid used is less than 10 grams.
Conservation of mass, matter cannot be created or destroyed.</span>
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Answer:
2.2 x 10⁻³⁴ J
or
2.2 x 10⁻¹⁸ J
Explanation:
You can calculate the energy using the photon energy equation:
E = hc / λ
In this equation,
-----> E = energy (J)
-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)
-----> c = speed of light (3.0 x 10⁸ m/s)
-----> λ = wavelength (m)
You can plug the given wavelength, along with the other constants, into the equation and simplify to find the energy.
E = hc / λ
E = (6.626 x 10⁻³⁴ J*s)(3.0 x 10⁸ m/s) / (9 x 10⁸ m)
E = 2.2 x 10⁻³⁴ J
I suspect that you may have forgotten the negative sign in front of the 8 (9 x 10⁻⁸). This would change your answer to 2.2 x 10⁻¹⁸ J.
Answer:
Solution 59P
n = 0.255 mol of He
P = 1.25 atm
T = 305 K.
V= ?
This can be found using ideal gas equation :
PV = nRT
V =
We know, gas constant (R) = 0.0821 L.atm mol-1 K-1.
= 5.10 L.
Hence, volume of He is 5.10 L
Explanation:
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