Answer:
perchlorate as fuel. A possible reaction is
3Al (s) + 3NH4ClO4 (s) = Al2O3 (s) + AlCl3 (s) + 3NO (g) 6H2O (g)
Answer:
The atomic radius of strontium is larger than magnesium because there are more number of shielding electrones in strontium than magnesium, which causes electron-electron repulsion, that makes the electrons in valance shell to expand. Hence it would decrease the effective nuclear charge.
Explanation:
in it I mass=150g,initial temp 1=95,mass2=500g,temp2=?,final temperature=27.2 C1=0.444C2=4.18
using formula
m1c1(final temp-initial temp1) =m2c2(temp2-final temp)
150x0.444(27.2-95)=500x4.18(?-27.2)
66(-67.8)=2000(?-27.5)
-4474.8=2000?-55000
collect like terms
-4474.8+55000=2000?
50525=2000?
divide both sides by 2000
2000?/2000=50525/2000
initial temperature =25.26 degree Celsius
I think it's C with the circles in the mantle
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