Question

D) dissociation E) sublimation 43) How is the reaction shown below best classified? 2HgO(3) - 2Hg() + O26) A) decomposition B) combination C) combustion D) single-replacement E) double-replacement 44) Which property is typical for molecular solids? A) contain ionic and covalent bonds B) have no organized structure C) consist of only metal atoms D) have low melting points E) will boil at very high temperature Hydrogen fluoride will react with glass (silicon dioxide, SiO2) according to the equation below. What mass of HF is required to react completely with 16.0 g of glass? Molar masses: Si. 28.09 g/mol; F. 19.00 g/mol; H, 1.01 g/mol; 0, 16.00 g/mol] 4HF(g) + SiO2(s) - SiF4(g) + 2H20(g) A) 80.0 g B) 64.0 g C) 320 g D) 5.33 g E) 21.3

Answer 1

43)

Combination: For this type of reaction there is only 1 product formed from 2 or more reactant

Decomposition:For this type of reaction there is only 1 reactant and decomposes into 2 or more products

single displacement: In this type, 1 reactant displaces other reactant from its compound

double displacement:In this type, both reactant displaces each other

combustion reaction: compound reacts with O2 to give CO2 and H2O

Here 1 reactant is decomposing and forming more than 1 product.
So, this is decomposition reaction.
Answer: A

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