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2 years ago

The difference between non-spontaneous and spontaneous reactions is that non-spontaneous reactions:

Chemistry

1 answer:

mihalych1998 [28]2 years ago

3 0

Answer:

The answer to your question is: second option

Explanation:

occur faster than spontaneous reactions The speed of a reaction does not depend if it s spontaneous or not. This option is incorrect.

require outside interference to occur This option is true, non spontaneous reactions requiere heat, a catalizer or any interference to occur.

release free energy This option is not true, they could or not release energy

occur without an input of heat This option is false, most of non-spontaneous reactions requiere heat to occur.

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What the answer I’m on a midterm and can’t seem to find it help

Sonja [21]

Answer:

Sorry I’m not rlly sure but maybe the 2nd or the last

Explanation:

8 0

2 years ago

What mass of HBO2 is produced from the combustion of 139.5 g of B2H6? Answer in units of g.

aliina [53]

Answer:

$m_{HBO_2}=441.8gHBO_2$

Explanation:

Hello there!

In this case, since the combustion of B2H6 is:

$B_2H_6+3O_2\rightarrow 2HBO_2+2H_2O$

Thus, since there is 1:2 mole ratio between the reactant and product, the produced grams of the latter is:

$m_{HBO_2}=139.5gB_2H_6*\frac{1molB_2H_6}{27.67gB_2H_6} *\frac{2molHBO_2}{1molB_2H_6} *\frac{43.82gHBO_2}{1molHBO_2}$

$m_{HBO_2}=441.8gHBO_2$

Best regards!

5 0

2 years ago

In the equation:

Ksenya-84 [330]

Answer:

B) 16 g

Explanation:

2H₂ + O₂ → 2H₂O

First we convert 4 moles of O₂ into moles of H₂, using the stoichiometric coefficients of the balanced reaction:

4 mol O₂ * $\frac{2molH_2}{1molO_2}$ = 8 mol H₂

Finally we convert 8 moles of H₂ into grams, using its molar mass:

8 mol H₂ * 2 g/mol = 16 g

Thus, the correct answer is option B).

6 0

2 years ago

Each A atom is adjacent to 3 B atoms. What is the A-C-B bond angle?

Nutka1998 [239]

Using the simulation to build a system with 5 bonds. The resulting structure is called the Trigonal bipyramidal structure. The two different sites in a trigonal bipyramid are labeled as A and B in the drawing to the right.
In this case, therefore, the bond angle A-C-B is 90 Degrees (right angle)

3 0

2 years ago

To help relieve heartburn, a person should take medicine that is

Sav [38]

Prescribed to you by your doctor.

I would use an over the counter antacids for occasional heart burn. If there are symptoms of acid reflux I would suggest a histamine blocker, or H2-Blockers, such as Ranitidine (Zantac) and Famotidine (Pepcid)

3 0

3 years ago

Read 2 more answers