2 years ago

Substance/Specific heat capacity

Chemistry

2 answers:

nikdorinn [45]2 years ago

8 0

I believe it is aluminum

Andru [333]2 years ago

4 0

From the above given details

c= Q/m dalta T

Putting the above given details

9.450∗10J / 10.5g * 20.0C
=.450JgC

which gievs us our answer as iron/0.449 most likely identity of the substance.

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How many grams of FeCl 3 are in 250. mL of a 0.100 M solution?

Naddika [18.5K]

Answer:

The correct answer is option B

Explanation:

$$Molarity=\frac{Weight}{Molecular \,weight} \frac{1000}{V(in \, ml)}$

Given values,

Molarity of $FeCl_3=0.100M$

Volume of solution, $V=250ml$

Molecular weight of $FeCl_3=162.2$

Substituting this values in Molarity formula, we get

$0.1=\frac{weight}{162.2} \times\frac{1000}{250} $\\$\Rightarrow 16.22=weight\times4$\\$\Rightarrow weight=\frac{16.22}{4} $\\$\therefore weight=4.06g$