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grandymaker [24]

3 years ago

10

ANSWER FAST PLEASE!!

1 answer:

jasenka [17]3 years ago

8 0

Answer:

The last one, Positive charge occupies a very small volume in the atom.

Explanation:

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Lithium and nitrogen react to produce lithium nitride:

garri49 [273]

Answer:

B : 0.133 M

Explanation:

moles Li3N3 = 0.4 mol Li x (2 moles Li3N/6 moles Li) = 0.133 M

7 0

3 years ago

1) ____ NaCl + ____ KOH  ____ NaOH + ____ KCl

GalinKa [24]

Answer:

hope it's helpful to you .

your 9th question is wrong but I did it correctly

it's not BaS2 it's BaS

8 0

4 years ago

Why is coal and fossil fuels a nonrenewable resource

Tems11 [23]

Answer:

It is a finite resource. Fossil fuels such as oil, natural gas, and coal are examples of nonrenewable resources. Humans constantly draw on the reserves of these substances while the formation of new supplies takes eons. Renewable resources are the opposite: Their supply replenishes naturally or can be sustained.

Explanation:

7 0

3 years ago

Methane, a component in natural gas, can be used as a fuel in combustion reactions. What is the value for ΔGnon (in kJ) for the

Oksanka [162]

<u>Answer:</u> The $\Delta G$ for the reaction is -806.86 kJ

<u>Explanation:</u>

We are given:

$\Delta H^o_{rxn}=-803kJ=-803000J$ (Conversion factor: 1 kJ = 1000)

$\Delta S^o_{rxn}=-4.05J/K$

Temperature of the reaction = 293 K

To calculate the standard Gibbs's free energy of the reaction, we use the equation:

$\Delta G^o_{rxn}=\Delat H^o_{rxn}-T\Delta S^o_{rxn}$

Putting values in above equation, we get:

$\Delta G^o_{rxn}=-803000J-[(293K)\times (-4.05J/K)]=-801813.35J$

For the given chemical equation:

$CH_4(g)+2O_2(g)\rightleftharpoons CO_2(g)+2H_2O(g)$

The expression for $K_c$ is given as:

$K_{c}=\frac{[H_2O]^2[CO_2]}{[CH_4][O_2]^2}$

We are given:

$[H_2O]=6.41M$

$[CO_2]=3.83M$

$[CH_4]=14.51M$

$[O_2]=9.27M$

Putting values in above equation, we get:

$K_c=\frac{(6.41)^2\times 3.83}{14.51\times (9.27)^2}$

$K_c=0.126$

To calculate the Gibbs free energy of the reaction, we use the equation:

$\Delta G=\Delta G^o+RT\ln K_c$

where,

$\Delta G$ = Gibbs' free energy of the reaction = ?

$\Delta G^o$ = Standard gibbs' free energy change of the reaction = -801813.35 J

R = Gas constant = $8.314J/K mol$

T = Temperature = 293 K

$K_c$ = equilibrium constant in terms of concentration = 0.126

Putting values in above equation, we get:

$\Delta G=-801813.35J+(8.314J/K.mol\times 293K\times \ln(0.126))$

$\Delta G=-806859.46J=-806.86kJ$

Hence, the $\Delta G$ for the reaction is -806.86 kJ

8 0

3 years ago

A_____is an environment in which an organisms needs are met.

Alex73 [517]

Answer C

A habitat is where they have food and water

7 0

3 years ago

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