4 years ago

Significant figures of 1.004 x 10^-7

Chemistry

1 answer:

Goryan [66]4 years ago

7 0

Personally the first thing i do, is expand the number

.0000001004

4 sig figs.

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Among the alkaline earth metals in Group 2A/A, which is more reactive - beryllium (element 4) or strontium (element 38)?

umka2103 [35]

Answer:

Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are harder and less reactive than the alkali metals of Group 1A.

Explanation:

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3 years ago

Does a reaction occur when aqueous solutions of silver(I) acetate and manganese(II) iodide are combined?

san4es73 [151]

Answer:

When aqueous solutions of silver(I) acetate and manganese(II) iodide are combined, an insoluble precipitate of silver(I) iodide is formed

Explanation:

It is an example of precipitation reaction.
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Hence a reaction is observed.
Molecular reaction: $2Ag(OAc)(aq.)+MnI_{2}(aq.)\rightarrow 2AgI(s)+Mn(OAc)_{2}(aq.)$

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3 years ago

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Elden [556K]

The formula of this ion is CrO42– . The correct option among all the options that are given in the question is the third option or the last option. The other choices are incorrect and can be easily negated. I hope that this is the answer that you were looking for and the answer has come to your desired help.

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3 years ago

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Hope this helps you.