3 years ago

Explain how observations differ from inferences?

1 answer:

4 0

And observation should have some thing that you observe while an inference is something that you guessed about. Hope this helps :-)

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Tatiana [17]

Answer:

(D) Water from streams and rivers carry salt to the ocean

Explanation:

Hope this helps!

8 0

3 years ago

Agata [3.3K]

Answer: $\Delta G_{rxn}=130.19J$

Explanation:

The balanced chemical reaction is,

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

The expression for Gibbs free energy change is,

$\Delta G_{rxn}=\sum [n\times \Delta G_(product)]-\sum [n\times \Delta G_(reactant)]$

$\Delta G_{rxn}=[(n_{CO_2}\times \Delta G_{CO_2})+(n_{CaO}\times \Delta G_{CaO})]-[(n_{CaCO_3}\times \Delta G_{CaCO_3})]$

where,

n = number of moles

Now put all the given values in this expression, we get

$\Delta G_{rxn}=[(1\times -394.4)+(1\times -604.17)]-[(1\times -1128.76)]$

$\Delta G_{rxn}=130.19J$

Therefore, the gibbs free energy for this reaction is, +130.19 kJ

4 0

3 years ago

Wittaler [7]

Answer:

YIKES. a bit late. Answers include 1, 2, 3

Explanation:

6 0

3 years ago

ss7ja [257]

Try this

15.6 newtons

8 0

3 years ago

slamgirl [31]

You were supposed to attach a picture so I know what the question id

4 0

3 years ago