Chemistry, 29.06.2019 16:30 mhill32

Which are factors of rock types that affect the rate of weathering? check all that apply. porosity, moisture, temperature, mineral, softness, or ease of dissolving

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Answer from: kristinashau

Weathering is breaking of rock due to chemical or mechanical factors

The major facts that affect rate of weathering of a rock type are

Porosity: More the porosity more the chance to undergo weathering

moisture: It enhance the rate of chemical weathering, it is a climatic factor which affects the rate of weathering of rock

temperature: again it also enhance the rate of chemical weathering, it is also a climatic factor

mineral: it also affects the rate of weathering. If a rock has more amount of mineral quartz then it will undergo weathering in less amount however a rock having iron may weather more easily.

softness: it also enhance the rate of weathering

ease of dissolving: again it enhance the rate of weathering

Answer from: Quest

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form( $n_2$ ) .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

Answer from: Quest

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

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Which are factors of rock types that affect the rate of weathering? check all that apply. porosity,...