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Amiraneli [1.4K]
3 years ago
12

The irreversible thermite reaction (Fe2O3 + 2 Al --> 2 Fe + Al2O3) is highly exothermic, changing the temperature by over 100

0 of degrees. If this reaction were to occur in a bucket of liquid water, what would happen to the water? Think about changes to state of matter.
Physics
1 answer:
likoan [24]3 years ago
6 0

Answer:

the water will boil and change into a gas

Explanation:

This is because it is exothermic and releases the energy into the surroundings and the fact that water boils at 100 degrees Celsius

You might be interested in
Ice has a specific heat of 2.093Jg ∘C, liquid water's specific heat is 4.184Jg ∘C, and steam has a specific heat of 1.864Jg ∘C.
Ivan

Answer:

The liquid phase will have the lowest temperature change upon heating.

Explanation:

Assuming no phase change due to heating, we know that the temperature change, is proportional to the mass heated, being the proportionality constant  a quantity that depends on the material, and represents the resistance of the material to change the temperature, called specific heat.

So, if we assume that the mass is the same for the three phases, and that the amount of heat supplied is also the same,the phase with the highest specific heat will have the lowest temperature change.

So, the liquid phase will be the one that exhibits this behavior, as the specific heat of liquid water (4.184 J/gºC) is the highest among the three phases.

8 0
3 years ago
What would be the current going through a 200 ohm resister that is connected across a 120 v power supply?
gavmur [86]
Here is your answer

hope it help you

6 0
3 years ago
How is the density of a substance calculated?
den301095 [7]
1).  Take a sample of the substance.  The sample should be the largest
possible that will allow it to be be easily handled and the following steps
to be performed with it. 
(The density doesn't depend on the size of the sample, and every sample
of the same substance has the same density.  But using a larger sample
can improve the accuracy of the measurements you make, and therefore
improve the accuracy of the density you derive for the substance.)

2). Ask or measure the mass of the sample.

3). Ask or measure the volume of the sample.

4). Divide the mass by the volume. Their quotient is the density
of the substance.
3 0
3 years ago
The record blue whale shown below had a mass of 1.90 × 105 kg. Assuming that its average density was 0.900 g/cm3, as has been me
Agata [3.3K]

Answer:

replace 920 with 900

Explanation:

8 0
3 years ago
A budding magician holds a 2.24-mW laser pointer, wondering whether he could use it to keep an object floating in the air with t
Sonbull [250]

Answer:

 W = 1.49 10⁻¹¹ kg

Explanation:

For this problem, let's use Newton's equation of equilibrium

           F - W = 0

            F = W              (1)

Strength can be found from the definition of pressure

        P = F / A

        F = P A

   

The radiation pressure for a reflective surface is

            P = 2 I / c)

   

We substitute in equation 1

         2 I / c  A = W

The intensity is defined by the ratio of the power between the area

          I = P / A

          P = I A

We substitute

          2 P / c = W

   

           W = 2  2.24 10-3 / 3 108

           W = 1.49 10⁻¹¹ kg

7 0
3 years ago
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