How do gases from the air help break down rocks?

Answers

Answer 1

Answer: Some rocks are sedimental. They are soft. Rocks are made out of gases etc. So some of the gas in the air makes a reaction with the rock which helps break the rock down.

Answer 2

Answer: Rocks are made up of different compounds. Gases like nitrogen, oxygen and water vapour and some non-metallic oxides react with these compounds to form new compounds and then break down into fine particles, due to breaking of bonds between the atoms, caused by the reaction of gases.This leads to break down of rocks into fine particles

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How many grams of H20 is formed with 0.75 moles of NaOH

Answers

Answer: 13.5g

Explanation:

Moles = mass/molar mass

Molar mass of water= 18gmol-1

0.75=m/18

m= 17*0.75= 13.5g

Freezing and thawing of water can cause A.erosion B.weathering C. flooding D.deposition

Answers

the answer is b weathering

The way that a fluid flows depends on several factors. Briefly describe the factors – use as much scientific vocabulary that you can.

Answers

Answer:

Factors that influence flow :

Flow patterns in a fluid (gas or liquid) depend on three factors: the characteristics of the fluid, the speed of flow, and the shape of the solid surface. Three characteristics of the fluid are of special importance: viscosity, density, and compressibility. Viscosity is the amount of internal friction or resistance to flow. Water, for instance, is less viscous than honey, which explains why water flows more easily than does honey.

All gases are compressible, whereas liquids are practically incompressible; that is, they cannot be squeezed into smaller volumes. Flow patterns in compressible fluids are more complicated and difficult to study than those in incompressible ones. Fortunately for automobile designers, at speeds less than about 220 miles (350 kilometers) per hour, air can be treated as incompressible for all practical purposes. Also, for incompressible fluids, the effects of temperature changes can be neglected.

What would happen if there no decomposers

Answers

producers would not have enough nutrients .

all the other categories above the decomposers would die off, the decomposers help get rid of the dead organisms and if there were no decomposers then there would be dead organisms and bones everywhere.

Gold melts at 1064 c. Melting point is a ___.A)chemical change
B)chemical property
C)physical change
D)physical property

Answers

Physical property .

Answer:

i would say Chemical property

Explanation:

PLS HELP QUICK WORTH 30 POINTS!!!!!!!!Complete the sentence. When a base is added to water, hydrogen ions __________. increase decrease stay the same disappear

Answers

A base is a substance that has the tendency to release OH- ions. These ions then attract protons to form water.

For example:

NaOH is a strong base which dissociates into Na+ and OH- ions.

NaOH → Na+ + OH-

The OH- ions can then grab the H+ ions from water, thereby reducing the hydrogen ion concentration and increasing the pH

Ans :

When a base is added to water, hydrogen ions decrease.

The answer is decrease.

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