Answer:
= 67.79 g
Explanation:
The equation for the reaction is;
4Cr(s)+3O2(g)→2Cr2O3(s)
The mass of O2 is 21.4 g, therefore, we find the number of moles of O2;
moles O2 = 21.4 g / 32 g/mol
=0.669 moles
Using mole ratio, we get the moles of Cr2O3;
moles Cr2O3 = 0.669 x 2/3
=0.446 moles
but molar mass of Cr2O3 is 151.99 g/mol
Hence,
The mass Cr2O3 = 0.446 mol x 151.99 g/mol
<u> = 67.79 g
</u>
Answer:
1. E. mitochondrion
2. C. chloroplasts
3. G. vacuole
4. A. cell membrane
5. B. cell wall
6. D.cytoplasm
7. F. Nucleus
8. cytoplasm
9. cell membrane
10. chloroplast
11. mitochondrion
12. nucleus
13. cell wall
14. vacuole
Explanation:
- Be familiar which each term.
- Look up diagram to understand image.
- Hope that helped! Please let me know if you need further explanation on each word.
Answer:
that will be endothermic reaction...... as oxides of mercury decomposes and break s into simpler elements by absorbing energy
Explanation:
hope it helped u buddy
Answer:
C
Explanation:
because it is product over reactants. hope this helps :)
