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vodomira [7]
3 years ago
9

Copy and balance these chemical equations "K​

Chemistry
1 answer:
alexdok [17]3 years ago
5 0

"K" is Potassium. If that is the answer you are needing.

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Researchers are investigating processed that happen during digestion which answer choice describes only a physical change during
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Answer:Chewing in the mouth breaks food into smaller pieces

Explanation: all you are doing is breaking down the food in your mouth

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3 years ago
Flammable materials like alcohol should never be dispensed or used near True or False
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near what like open flames? if so false unless it clarifies the solution requires alcohol then its a no go

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The same reaction is begun with an initial concentration of 0.05 M O3 and 0.02 M NO. Under these conditions, the reaction reache
Ivahew [28]
The balanced equation of the reaction is:

O3(g) + NO (g) → O2 (g) + NO2 (g)

Then the ratios of reaction is 1 mol O3 : 1 mol NO : 1 mol O2 : 1 mol NO2

If you have initially 0.05 M of O3 and 0.02 M of NO, the reaction will end when all the NO is consumed.

The by the stoichiometry 0.02 mol of O3 will be consumed in 8 seconds.

And the rate of reaction is change in concetration divided by the time.

The change in concentration in O3 is 0.02 M

Then, the rate respect O3 is 0.02 M / 8 seconds = 0.0025 M/s
8 0
3 years ago
A substance is made up of slow-moving particles that have very little space between them. Based on this information,
grigory [225]

Answer:

It is not a gas because its particles do not have large space between them.

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3 years ago
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How long would it take for 1.50 mol of water at 100.0 ∘c to be converted completely into steam if heat were added at a constant
Aleksandr-060686 [28]
To determine the time it takes to completely vaporize the given amount of water, we first determine the total heat that is being absorbed from the process. To do this, we need information on the latent heat of vaporization of water. This heat is being absorbed by the process of phase change without any change in the temperature of the system. For water, it is equal to 40.8 kJ / mol.

Total heat = 40.8 kJ / mol ( 1.50 mol ) = 61.2 kJ of heat is to be absorbed

Given the constant rate of 19.0 J/s supply of energy to the system, we determine the time as follows:

Time = 61.2 kJ ( 1000 J / 1 kJ ) / 19.0 J/s = 3221.05 s
5 0
3 years ago
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