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3 years ago

HELP PLEASE !!!!

2 answers:

7 0

Answers are:
-4 for C in CH4, because carbon has greater electronegativity than hydrogen and he attracts shared electrons.
+4 for C in CO2, because carbon has smaller electronegativity than oxygen.
+1 for H in both CH4 and H2O, because hydrogen has amaller electronegativity than both carbon and oxygen.

notka56 [123]3 years ago

5 0

It’s the first, second, and fourth options. Hope it helps ^^

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HI decomposes to H2 and I2 by the following equation: 2HI(g) → H2(g) + I2(g);Kc = 1.6 × 10−3 at 25∘C If 1.0 M HI is placed into

dsp73

Answer: The concentration of hydrogen gas at equilibrium is 0.037 M

Explanation:

We are given:

Initial concentration of HI = 1.0 M

The given chemical equation follows:

$2HI(g)\rightleftharpoons H_2(g)+I_2(g)$

Initial: 1.0

At eqllm: 1.0-2x x x

The expression of $K_c$ for above equation follows:

$K_c=\frac{[H_2][I_2]}{[HI]^2}$

We are given:

$Kc=1.6\times 10^{-3}$

Putting values in above expression, we get:

$1.6\times 10^{-3}=\frac{x\times x}{(1.0-2x)^2}\\\\x=-0.043,0.037$

Neglecting the negative value of 'x' because concentration cannot be negative

So, equilibrium concentration of hydrogen gas = x = 0.037 M

Hence, the concentration of hydrogen gas at equilibrium is 0.037 M

6 0

3 years ago

How many moles of h2o are produced in neutralization when 1. 5 mole of mg(oh)2 reacts with h2so4?

Firlakuza [10]

There are 3 moles of $H_{2} O$ are produced in neutralization when 1. 5 mole of $Mg(OH)_{2}$ reacts with $H_{2} SO_{4$

The neutralization reaction between magnesium hydroxide and sulfuric acid is given as,

$Mg(OH)_{2} + H_{2} SO_{4$ → $MgSO_{4} + 2H_{2} O$

from above chemical equation , we can conclude the molar ratio = 1:2

It means two moles of water molecule is produce from one mole of magnesium hydroxide.

So, number of moles of water molecules produced from 1. 5 mole of magnesium hydroxide = 1. 5 mole× 2 = 3 moles

Therefore, number of moles of water molecules produced from 1. 5 mole of magnesium hydroxide is 3 moles.

To learn more about neutralization

brainly.com/question/27891712

#SPJ4

5 0

2 years ago

A farmer plants corn in nutrient rich soil. The corn plants absorb nutrients from the soil in order to grow and perform life pro

ratelena [41]

Answer:

It will make the soil dry out and lose nutrance, the soil will be unusable in later years. plz give me brainleist

8 0

3 years ago

An SN2 reaction is a type of ________in which the nucleophile attacks the electrophile _______a leaving group leaves.

mars1129 [50]

Answer:

Nucleophilic reaction

and

Explanation:

A nucleophilic reaction is a type of reaction that involves attack of a specie having a negative charge or a lone pair of electrons on a positive center. This negatively charged specie or specie having a lone pair of electrons is called a nucleophile.

An SN2 reaction is a bimolecular, concerted nucleophilic reaction that leads to inversion of configuration at the carbon center. The leaving group is the group that departs from the frontside of the molecule as the nucleophile attacks from the backside.

6 0

2 years ago

EASY

eimsori [14]

Answer:

I'm too lazy to read that

Explanation:

lol

8 0

3 years ago

Read 2 more answers