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s344n2d4d5 [400]
1 year ago
5

Cuttlefish, squids and octopus change the coloration of their skin. How many colors are in their color cells?​

Chemistry
1 answer:
Daniel [21]1 year ago
4 0

Answer:

red, orange, brown, yellow, black

Explanation:

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Which of these elements have the strongest and the weakest forces between its atoms.Give A Reason For Your Answer. Copper,oxygen
fiasKO [112]

Answer:

Copper

Explanation:

Within intermolecular forces, ion-dipole is the strongest, followed by hydrogen bonding, then dipole-dipole, and then London dispersion.

4 0
2 years ago
At constant temperature and pressure, increasing the amount of a gas will __________.
aivan3 [116]
At constant temperature and pressure, increasing the amount of gas will increase the volume.
6 0
3 years ago
Calculate ΔHrxn for the following reaction: Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g) Use the following reactions and given ΔH′s. 2Fe(s)+3/
sesenic [268]

Answer:

The answer to your question is:  ΔHrxm = -23.9 kJ

Explanation:

Data:

2Fe(s)+3/2O2(g)→Fe2O3(s),  ΔH = -824.2 kJ     (1)

    CO(g)+1/2O2(g)→CO2(g)         ΔH = -282.7 kJ   (2)

Reaction:

                          Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)  

We invert (1) and change the sign of  ΔH

        Fe2O3(s)   →  2Fe(s)+3/2O2(g)  ΔH = 824.2 kJ

We multiply (2) by 3

      3(  CO(g)+1/2O2(g)→CO2(g)         ΔH = -282.7 kJ)   (2)

      3CO(g)+3/2O2(g)→3CO2(g)         ΔH = -848.1 kJ

We add (1) and (2)

Fe2O3(s)   →  2Fe(s)+3/2O2(g)  ΔH = 824.2 kJ

3CO(g)+3/2O2(g)→3CO2(g)         ΔH = -848.1 kJ

Fe2O3(s) +  3CO(g)+3/2O2(g)  →  2Fe(s)+3/2O2 + 3CO2(g)    

Simplify

    Fe2O3(s)+3CO(g)→2Fe(s)+3CO2(g)    and ΔHrxm = -23.9 kJ

6 0
2 years ago
During all chemical reactions,mass energy, and charge are...
Mazyrski [523]
I believe the answer would be 3( conserved)
7 0
3 years ago
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Desperate Please Hurry
Zepler [3.9K]

Answer:

Explanation:

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