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Liono4ka [1.6K]

3 years ago

14

PLZ HELP! I will give brainliest for best answer!!!!

1 answer:

AnnZ [28]3 years ago

4 0

Nitrogen is 1.25 g/L

Sulfur Dioxide is 2.86 g/L

Methane is 0.174 g/L

Hope I helped :)

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Can someone please help me with science.

Ierofanga [76]

Answer:

The tendency of an object to resist changes in its state of motion varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion.

4 0

3 years ago

Below is a proposed mechanism for the decomposition of H2O2. H2O2 + I– → H2O + IO– slow H2O2 + IO– → H2O + O2 + I– fast Which of

Savatey [412]

Answer: Option (d) is the correct answer.

Explanation:

The given equations as as follows.

$H_{2}O_{2} + I^{-} \rightarrow H_{2}O + IO^{-}$ (slow)

$H_{2}O_{2} + IO^{-} \rightarrow H_{2}O + O_{2} + I^{-}$

Therefore, overall reaction equation will be as follows.

$2H_{2}O_{2} + I^{-} + IO^{-} \rightarrow 2H_{2}O + O_{2} + IO^{-} + I^{-}$

So, cancelling the spectator ions then the equation will be as follows.

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

As, it is known that slow step of a reaction is the rate determining step. Therefore, rate law for the slow step will be as follows.

$H_{2}O_{2} + I^{-} \rightarrow H_{2}O + IO^{-}$

Rate law = $k[H_{2}O_{2}][I^{-}]$

Hence, the reaction is first order with respect to $[I^{-}]$ and it is also first order reaction with respect to $[H_{2}O_{2}]$ .

Also, $[I^{-}]$ acts as a catalyst in the reaction.

Thus, we can conclude that the incorrect statement is $IO^{-}$ is a catalyst.

6 0

3 years ago

When Mendeleev and other scientists arranged elements in order of increasing atomic mass, they noticed a repeating pattern of __

borishaifa [10]

The only answer that really makes sense here is the first one, properties. I would go with that one.

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3 years ago

When coke burns in air then evolved gas is

Arturiano [62]

Answer:

Explanation:

Carbon (coke) burns in air to form carbon dioxide gas.

(i) C(s) + O2 ↑= CO2 ↑

7 0

4 years ago

575/2000 in ratio please send me photos of this answer

Inessa05 [86]

Answer:

23 : 80

Not sure

No time for pictures

4 0

4 years ago

Read 2 more answers