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lord [1]
3 years ago
7

How many moles of sodium are produced in 46g of substance?​

Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
3 0

Answer:

Only 2moles are produced from it

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What factors generally determine whether a reaction happens or not?
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Explanation:

The answer is C Enthaply and entropy because temperature plays a big role in reactions

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3 years ago
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When a 10 mL graduated cylinder is filled to the 10 mL mark, the mass of the water was measured to be 10.085 g at 20ºC. If the d
Tanzania [10]
To calculate percent errorsubtract the accepted value from the experimental value.Take the absolute value of step 1.Divide that answer by the accepted value.Multiply that answer by 100
so% error = [|(10.085 g/ 10 ml) - 0.9975| / 0.9975] x 100
% error = 1.1 %
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A student has a cube that has a mass of 5.5g and a volume of 4.10 cm3. What substance does he have?
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Determine the wavelength of the energy that needs to be absorbed for a 3p electron in chlorine to be promoted to the 4s subshell
bazaltina [42]

Answer:

The wavelength of the energy that needs to be absorbed  = 52.36 nm

Explanation:

For this study;

Let consider the Rydgberg equation from Bohr's theory of atomic model:

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\dfrac{1}{\lambda} = R_H (Z^*)^2( \dfrac{1}{n_1^2}-\dfrac{1}{n_2^2})

where

Z* = effective nuclear charge of atom = Z - σ = 6

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n₂ = higher orbit = 4

R_H = Rydyberg constant = 1.09 × 10⁷ m⁻¹

λ = wave length of the light absorbed

∴

\dfrac{1}{\lambda} = 1.09 \times 10^7}(6)^2( \dfrac{1}{3^2}-\dfrac{1}{4^2})

\dfrac{1}{\lambda} = 1.09 \times 10^7}(36)( \dfrac{1}{9}-\dfrac{1}{16})

\dfrac{1}{\lambda} = 392400000\times0.0486111111

\dfrac{1}{\lambda} =19075000

\lambda = \dfrac{1}{19075000}

\lambda = \dfrac{1}{1.91\times 10^7 \ m^{-1}}

\lambda = 5.236 \times 10^{-8} m

\lambda = 52.36 \times 10^{-9} m

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Therefore, the wavelength of the energy that needs to be absorbed  = 52.36 nm

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3 years ago
What is an operational and Conceptual definition of an element ?
zimovet [89]
A conceptual definition tells you what the concept means, what your constructs are by explaining how they are related to other constructs, while an operational definition only tells you how to measure it.
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