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3 years ago

6

A sodium atom has how many electrons in its third energy level

1 answer:

yKpoI14uk [10]3 years ago

4 0

<span>13.6 electron volts

Hope this helps!! (If not sorry!)</span>

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The equilibrium of 2H 2 O(g) 2H 2 (g) + O 2 (g) at 2,000 K has a Keq value of 5.31 x 10-10. What is the Keq expression for this

nevsk [136]

Answer:

$5.31*10^{-10} = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}$

Explanation:

For a chemical reaction, equilibrium is a state at which the rate of the forward reaction equals that of the reverse reaction. The equilibrium constant Keq is a parameter characteristic of this state which is expressed as a ratio of the concentration of the products to that of the reactants.

For a hypothetical reaction:

xA + yB ⇄ zC

The equilibrium constant is :

$Keq = \frac{[A]^{x}[B]^{y}}{[C]^{z} }$

The given reaction involves the decomposition of H2O into H2 and O2

$2H_{2}O\rightleftharpoons 2H_{2} + O_{2}$

The equilibrium constant is expressed as :

$Keq = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}$

Since Keq = 5.31*10^-10

$5.31*10^{-10} = \frac{[]H_{2}]^{2}[O_{2}]}{[H_{2}O]^{2}}$

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3 years ago

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what is the molarity of a solution formed by mixing 10.0 g og h2so4 with enough water to make 0.100 l solution

tamaranim1 [39]

H₂SO4:

m=10g
M=98g/mol

n = m / M

n = 10g / 98g/mol = 0,102mol
V=0,1L

Cm = n / V = 0,102mol / 0,1L = 1,02M

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3 years ago

Use the activity series below the predict the products of each of the following reactions. Do not worry about balancing the equa

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Answer:

1. a

2.b

Explanation:

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Explain what is "Heredity".

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Heredity refers to the passing of traits from parents to their offspring (either by asexual or sexual reproduction).

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Calculate the TOTAL heat absorbed (in kJ) when 69.4 g of water is heated from 23.7°C to 126°C

Anestetic [448]

Answer: 29.7 kJ

Explanation:

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4 years ago