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Natasha_Volkova [10]
3 years ago
10

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

Chemistry
1 answer:
mihalych1998 [28]3 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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If 5 L of butane is reacted what volume of carbon dioxide is produced ILL GIVE BRAINLIEST
Len [333]

Answer: First, here is the balanced reaction:  2C4H10  +  13O2  ===>  8CO2  +  10H2O.

This says for every mole of butane burned 4 moles of CO2 are produced, in other words a 2:1 ratio.

Next, let's determine how many moles of butane are burned.  This is obtained by

5.50 g / 58.1 g/mole  =  0.0947 moles butane.  As CO2 is produced in a 2:1 ratio, the # moles of CO2 produced is 2 x 0.0947  =  0.1894 moles CO2.

Now we need to figure out the volume.  This depends on the temperature and pressure of the CO2 which is not given, so we will assume standard conditions:  273 K and 1 atmosphere.

We now use the ideal gas law PV = nRT, or V =nRT/P, where n is the # of moles of CO2, T the absolute temperature, R the gas constant (0.082 L-atm/mole degree), and P the pressure in atmospheres ( 1 atm).

V = 0.1894 x 0.082 x 273.0 / 1  =  4.24 Liters.

Explanation:

8 0
3 years ago
Which of the following elements has the lowest normal boiling point? 4 points A. Ne B. He C. Ar D. Kr
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Answer:

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What types of mixtures are these? (Homogeneous Mixture Hetergeneous Mixture)
salantis [7]

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A<u> heterogeneous mixture</u> has components whose proportions vary throughout the sample. The components of a heterogeneous mixture are visible and not uniform throughout. A heterogeneous mixture is simply any mixture that is not uniform in composition.

a) Peanuts and almonds mixed  together in a bowl  : The components(Peanuts and almonds) are visible in a bowl and are not evenly distributed and also not uniform throughout. So this is a 'heterogeneous mixture'.

b) Bucket full of sand and gravel  : The components(sand and gravel) are visible in a bucket and are not evenly distributed and also not uniform throughout. So this is a 'heterogeneous mixture'.

c) Cup of tea and sugar  : The components(tea and sugar) are evenly distributed and the appearance of the solution is uniform throughout. So this is a 'Homogeneous mixture'.

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4 0
3 years ago
A green laser pointer emits light with a wavelength of 536 nm. What is the frequency of this light?
anastassius [24]

Answer:

Your answer is 5.63 × 10^14 Hz

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v = 3.00 × 10 ^ 8 / 530 × 10^-9

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I hope this helps you.

3 0
3 years ago
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