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2 years ago

13

If you had an object with a mass of 76g and a volume of 22 ml, what is its density? If you cut this object in half, what would b

e its density?

1 answer:

V125BC [204]2 years ago

8 0

D = M/V = 76g / 22ml = 3.4g/ml

Half ~ D = 38g / 11ml = 3.4g/ml

Even if the object you had was cut in half, it’s density would remain the same.

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(2) $H_2(g)+Cl_2(g)\rightarrow 2HCl(g)$ $\Delta H_2=-185kJ$ ( × 3)

(3) $AlCl_3(aq.)\rightarrow AlCl_3(s)$ $\Delta H_3=+323kJ$ ( × 2)

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The expression for enthalpy of formation of $AlCl_3$ is,

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