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pentagon [3]
3 years ago
14

When objects like a horseshoe are left outside over time, the iron in them will react with oxygen to produce rust. Is this a che

mical property or iron?
Chemistry
1 answer:
SashulF [63]3 years ago
8 0
Hi, not sure if this is what you’re asking, but this would be a chemical change / chemical reaction. Rust is an iron oxide, formed by a redox reaction. :)
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Which list contains three major greenhouse gasesfound in earth’s atmosphere?(1) carbon dioxide, methane, and water vapor(2) carb
Goshia [24]
One is correct, <span>carbon dioxide, methane, and water vapor are the three major greenhouse gases found in the atmosphere.</span>
6 0
3 years ago
Read 2 more answers
A well-insulated, closed device claims to be able to compress 100 mol of propylene, acting as a SoaveRedlich-Kwong gas and with
Setler79 [48]

Explanation:

The given data is as follows.

    Moles of propylene = 100 moles,    T_{i} = 300 K

    T_{f} = 800 K,    V_{i} = 2 m^{3}

    V_{f} = 0.02 m^{3},   C_{p} of propylene = 100 J/mol

Now, we assume the following assumptions:

Since, it is a compression process therefore, work will be done on the system. And, work done will be equal to the heat energy liberating without any friction.

            W = mC_{p} \Delta T

     100 moles \times 100 J/mol K (800 - 300) K

                 = 5 \times 10^{6} J

                 = 5 MJ

Thus, we can conclude that a minimum of 5 MJ work is required without any friction.

3 0
3 years ago
Calculate the density of an object whose mass is 352 grams and has a volume of 469 mL please show work
mixer [17]

Answer:

<h2>0.75 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{352}{469}  \\  = 0.750533..

We have the final answer as

<h3>0.75 g/mL</h3>

Hope this helps you

4 0
2 years ago
Sally does the work in 2.3 hours and Pete does 2.5
Yuri [45]
Pete because 2.5 x 2.3 is faster
5 0
2 years ago
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Why do higher trophic levels is most ecosystem contain fewer organisms than lower trophic levels
Alinara [238K]

Answer:

With less energy at higher trophic levels, there are usually fewer organisms as well

Explanation: Organisms tend to be larger in size at higher trophic levels, but their smaller numbers result in less biomass. Biomass is the total mass of organisms at a trophic level.

4 0
2 years ago
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