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3 years ago

CH4(g) + 2O2(g) = CO2(g) + 2H2O(g)

Chemistry

1 answer:

krek1111 [17]3 years ago

3 0

Answer:

0.04 moles of CH₄ are required

Explanation:

Given data:

Number of moles of CH₄ required = ?

Number of moles of O₂ present = 0.08 mol

Solution:

Chemical equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

now we will compare the moles of oxygen and methane.

O₂ : CH₄

2 : 1

0.08 : 1/2×0.08 = 0.04

Thus, 0.04 moles of CH₄ are required.

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Examples of nitrogens unreactivity

REY [17]

WATCH OUT BUDDY:reactivity....Spelling mistake.

ANSWER:
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3 years ago

In the reaction a b c, doubling the concentration of a doubles the reaction rate and doubling the concentration of b does not af

PolarNik [594]

The reaction must be a + b --> c

Then you can predict a reaction rate, r o the type r = k * a^n * b^m

Given that the reaction rate is not affected by the concentration of b you can state that m = 0 and r = k * a^n.

Now given, that there is a proportional relation between the reaction rate and a (double a gives double rate), then n = 1 and r = k*a. You can verify that if you dobule a r also doubles.

Answer: r = k*a

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3 years ago

What is the percentage yield when 60kg of ammonia is produced from 60kg of hydrogen?

Softa [21]

Answer:

17.6%

Explanation:

%age yield is = actual yield /percentage yield ^100

3 0

3 years ago

The following is a list of weak acids and their Ka values.HOCl hypochlorous acid 3.5 x 10^-8H2S hydrogen sulfide 1.1 x 10^-7HCN

notsponge [240]

Answer:

(a) HNO₂ nitrous acid 4.5 x 10^-4 is strong acid

(b) Ka expression $Ka = \frac{[H^{+}][NO_{2} ^{-}] }{[HNO_{2}] }$

(c) List of Conjugate Bases

OCl⁻, S²⁻, CN⁻, NO₂⁻

(d) cyanide ion is strongest conjugate base.

(e) pH and pOH of Hypochlorous acid = 4.22 & 9.77

pH and pOH of hydrogen sulfide = 4 & 10

pH and pOH of hydrocyanic acid = 5.2 & 8.79

pH and pOH of nitrous acid = 2.17 & 11.8

Explanation:

(a) Ka and acidity are directly proportional to each other

hence nitrous acid is the strongest acid since it has highest Ka value.

(b) Ka expression of nitrous acid

HNO₂ → H⁺ + NO₂⁻

⇒ $Ka = \frac{[H^{+}][NO_{2} ^{-}] }{[HNO_{2}] }$

H₂S hydrogen sulfide = S²⁻(sulphide ion)

HCN hydrocyanic acid = CN⁻(cyanide ion)

HNO₂ nitrous acid = NO₂⁻(nitrite ion)

(d) We know according to Bronsted acid base concept Weak acid have strongest conjugate base

according to this hydrocyanic acid is weak acid so the corresponding conjugate base i.e. cyanide ion is strongest conjugate base.

5 0

3 years ago

Question 3 (please help)

poizon [28]

Answer:

the Answer is B

Explanation:

If resources are being used faster than they are being replenished, then the species has exceeded its carrying capacity. If this occurs, the population will then decrease in size. Every stable population has one or more factors that limit its growth. A limiting factor determines the carrying capacity for a species.

hope this helps have a good day :)

7 0

2 years ago

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