An unknown substance has a melting point of 1127 ? C , is soluble in water, does

Question

An unknown substance

• has a melting point of 1127 ?C,
• is soluble in water,
• does not conduct heat as a solid, and
• is hard.

Given these properties which of the following are possible identities for the unknown substance?
Check all that apply. SF6 Cdiamond Sn CoF2 An unknown substance

• has a melting point of 1127 ?C,
• is soluble in water,
• does not conduct heat as a solid, and
• is hard.

Given these properties which of the following are possible identities for the unknown substance?
Check all that apply. SF6 Cdiamond Sn CoF2 SF6 Cdiamond Sn CoF2

Explanation / Answer

CoF2

as SF6 has -50 deg C

diamond not soluble in water

Sn is metal

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