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3 years ago

Describe the role of earth's water system in the rock cycle

1 answer:

7 0

Erosion by wind or water transports the rock particles and sediments to other sooner or later hitting the ocean.then the rocks form together to make sediment rock! :D

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When Mendeleev started his work on organizing the elements, about how many had

Talja [164]

Answer:

About 60.

Explanation:

Mendeleev knew of 63 elements. He wrote their properties on cards and arranged them in order of atomic mass.

That's how he discovered that the properties of elements are periodic functions of their atomic masses.

8 0

3 years ago

Vanyuwa [196]

Answer:

If the volume of a gas increased from 2 to 6 L while the temperature was held constant, the pressure of the gas decreased by a factor of 3.

Explanation:

Boyle's law that says "The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure." This means that if the pressure increases, the volume decreases, while if the pressure decreases, the volume increases.

Boyle's law is expressed mathematically as:

Pressure * Volume = constant

P * V = k

To obtain the proportionality factor k you must make the quotient:

$k=\frac{V2}{V1} =\frac{6 L}{2 L}$

k= 3

This means that if the volume of a gas increased from 2 to 6 L while the temperature was held constant, the pressure of the gas decreased by a factor of 3.

4 0

3 years ago

Calculate the specific heat of the substance if 373 J is required to raise the temperature of a 312 gram sample by 25°C?

I am Lyosha [343]

Explanation:

Q = 373J

∆∅ = 25°C

m = 312g

c = x

Q = mc∆∅

373 = 312(x)(25)

373 = 7800x

x = 373/7800

x = 0.0478J/(g°C)

4 0

3 years ago

Why should atom or ions join together to form compounds?

SCORPION-xisa [38]

Answer:

while atoms form together, they percentage their outermost electrons to create more sustainable strength states. This sharing bonds the atoms into an ionic shape or a molecule

Explanation:

i hope this help a little

4 0

3 years ago

The general formula for the alkyne series is: CnH2n+2 CnH2n CnH2n-2 CnHn+2

jeyben [28]

The general formula for alkyne series is CnH2n-2

This is because alkyne is unsaturated hydrocarbon which has one triple bond and has no functional group from homologous series. Alkyne has a general formula of CnH2n-2

An example of an alkyne in ethyne with HC≡CH chemical formula ,

another example is propyne with CH3C≡CH formula

7 0

4 years ago