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kirill [66]
3 years ago
7

Which statements describe sedimentary rock? Check all that apply,

Chemistry
2 answers:
elena55 [62]3 years ago
7 0

Answer:

It comes from older rocks,It forms from sediments,it is one of the main 3 rocks, con form from materials solidified from solution.

Explanation:

Most of the rocks exposed at the surface of Earth are sedimentary--formed from particles of older rocks that have been broken apart by water or wind. The gravel, sand, and mud settle to the bottom in rivers, lakes, and oceans.These rocks often start as sediments carried in rivers and deposited in lakes and oceans. When buried, the sediments lose water and become cemented to form rock.Sedimentary rocks are one of three main types of rocks, along with igneous and metamorphic. Dissolved minerals in the ground water precipitate (crystallize) from water in the pore spaces forming mineral crusts on the sedimentary grains, gradually cementing the sediments, thus forming a rock.

vladimir1956 [14]3 years ago
6 0

Answer:

EDG 2020

Explanation:

It comes from older rocks,It forms from sediments,it is one of the main 3 rocks, con form from materials solidified from solution.

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1. What volume of gas (NU) is formed by the interaction of 13 g of zinc with 400 g of sulfuric acid solution with a mass fractio
Svetllana [295]

Answer:

4.5L of gas are produced

Explanation:

Based on the reaction:

Zn + H2SO4 → ZnSO4 + H2(g)

<em>Where 1 mole of Zn reacts with 1 mole of sulfuric acid to produce 1 mole of H2, the gas</em>

<em />

To solve this question we must find the moles of each reactant in order to find limiting reactant and, thus, the moles of H2 produced. Then using PV=nRT we can find the volume of the gas:

<em>Moles Zn -Molar mass: 65.38g/mol-</em>

13g * (1mol / 65.38g) = 0.20 moles Zn

<em>Moles H2SO4 -Molar mass: 98g/mol-</em>

400g * 10% = 40g H2SO4 * (1mol / 98g) = 0.41 moles H2SO4

As the ratio of the reaction is 1:1, the limiting reactant is Zn and the moles produced of H2 are 0.20 moles

Using PV = nRT; V = nRT/ P

<em>Where V is the volume of the gas </em>

<em>n are the moles = 0.20 moles</em>

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<em>T is absolute temperature = 273.15K at STP</em>

<em>P is pressure = 1atm at STP</em>

<em />

V = 0.20mol*0.082atmL/molK*273.15K / 1atm

V = 4.5L of gas are produced

<em />

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3 years ago
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