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3 years ago

HELP PLEASE!! What is the UNabbreviated electron configuration for B and C

Chemistry

1 answer:

umka21 [38]3 years ago

5 0

Answer:

C is $1s^{2} 2s^{2}2p^{2}$

B is $1s^{2} 2s^{2} 2p^{1}$

Explanation:

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In which of the following reactions will Kc= Kp?A) 4 NH3(g) + 3 O2(g) ⇌2 N2(g) + 6 H2O(g)B) 2 SO3(g) + 2 NO(g) ⇌2 SO2(g) + 2 NO2

inessss [21]

Answer: $2SO_3(g)+2NO(g)\rightleftharpoons 2SO_2(g)+2NO_2(g)$

Explanation:

Relation of $K_p$ with $K_c$ is given by the formula:

$K_p=K_c(RT)^{\Delta ng}$

where,

$K_p$ = equilibrium constant in terms of partial pressure

$K_c$ = equilibrium constant in terms of concentration

R = Gas constant

T = temperature

$\Delta n_g$ = change in number of moles of gas particles = $n_{products}-n_{reactants}$

$K_p=K_c$ when $\Delta n_g$ = 0

a) $4NH_3(g)+3O_2(g)\rightleftharpoons 2N_2(g)+6H_2O(g)$

$\Delta n_g$ = change in number of moles of gas particles = $8-7=1$

b) $2SO_3(g)+2NO(g)\rightleftharpoons 2SO_2(g)+2NO_2(g)$

$\Delta n_g$ = change in number of moles of gas particles = $4-4=0$

c) $4N_2(g)+2O_2(g)\rightleftharpoons 4N_2O(g)$

$\Delta n_g$ = change in number of moles of gas particles = $4-6=-2$

d) $6SO_2(g)+3O_2(g)\rightleftharpoons 6SO_3(g)$

$\Delta n_g$ = change in number of moles of gas particles = $6-9=-3$

Thus for reaction , $2SO_3(g)+2NO(g)\rightleftharpoons 2SO_2(g)+2NO_2(g)$ , $K_p=K_c$ as $\Delta n_g$ = 0

5 0

3 years ago

How many moles Of H2O will be produced from 42.0 g of H2O2?

d1i1m1o1n [39]

$Molar{Mass} H_{2}O_{2} =2*16.0+2*1.0= 34.0 g/mol

42.0 g H_{2}O_{2}* \frac{1 mol H_{2}O_{2}}{34.0 g H_{2}O_{2}} = 1.24 mol H_{2}O_{2}

2H_{2}O_{2} --\ \textgreater \ 2 H_{2}O +O_{2}
\\2 mol ----2 mol (from// reaction)

\\1.24 mol ---1.24 mol (from the problem)

Answer: 1.24 mol H_{2}O.$

3 0

3 years ago

If 3.0 moles of hydrogen react, how many grams of nitrogen will be used? Round your answer to the nearest whole number. N2 + 3H2

Iteru [2.4K]

Answer:

28g

Explanation:

Given parameters:

Number of moles of hydrogen = 3moles

Unknown:

Mass of nitrogen used = ?

Solution:

To solve this problem, let us establish the balanced reaction equation first;

N₂ + 3H₂ → 2NH₃

From the balanced reaction equation;

3 mole of H₂ will combine with 1 mole of N₂

Now,

Mass of Nitrogen = number of moles x molar mass

Molar mass of N₂ = 2(14) = 28g/mol

Mass of Nitrogen = 1 mole x 28g/mole = 28g

8 0

3 years ago

Which type of electromagnetic radiation had a lower frequency than infrared radiation

Alika [10]

Answer:

Radio waves

Explanation:

Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation. In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves.

3 0

3 years ago

Which description BEST describes a particle that contains 18 electrons, 18 neutrons and 16 protons?

Arlecino [84]

Answer:

Explanation:

C) an atom with an atomic number of 18

5 0

3 years ago