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3 years ago

List evidence that supports the Big Bang Theory.

Chemistry

2 answers:

Novay_Z [31]3 years ago

7 0

Answer:

Explanation:

There are three great evidences that support the Big Bang theory:

The universe expands: Edwin Hubble observed that galaxies move away from each other at speeds proportional to the distance between them. This means that the universe is expanding. Then it is possible to think that, at some point in time, he was concentrating on one point. At that point the temperature and density would be extremely high, which is what we call ‘Big Bang’ or ‘Big Bang’.

The composition of the universe is three quarters of hydrogen and one quarter of helium, the two lightest elements: Both constitute 98% of the total mass of the universe. The rest of the periodic table represents approximately 2% of the total mass. All those ‘heavy’ atoms were born in the stellar nuclei. The quantities observed in the universe coincide with those that would be expected if the universe had cooled sufficiently in the three minutes following the Big Bang. That is, approximately three minutes after the initial moment, the temperature would have dropped enough to stop any nuclear reaction, leaving a universe with the observed amounts of hydrogen and helium.

Temperature and background radiation: The universe was born in an indescribably hot state and has been cooling. It was possible to measure an estimated current temperature of 2.8 Kelvin, very close to absolute zero. It was also possible to measure the emission of the Milky Way, detecting a signal, which could not be eliminated. This noise or persistent signal throughout the universe is the "echo" of the beginning of time.

These are the three main evidences that support the Big Bang Theory.

Sphinxa [80]3 years ago

5 0

The redshift of distant galaxies means that the Universe is probably expanding. If we then go back far enough in time, everything must have been squashed together into a tiny dot and the rapid eruption from this tiny dot was the Big Bang. Another piece of evidence could be that because light takes a long time to travel across the Universe, when we look at very distant galaxies or stars we are also looking back in time. This shows us that galaxies a long time ago were quite different from those today, showing that the Universe has changed. This fits better with the Big Bang theory than the Steady State theory

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If the concentration of products is increased the equilibrium is shifted from * left to right/ to the left/ right to left /down

Marysya12 [62]

Answer:

to the left

Explanation:

If the concentration of products is increased for a reaction that is in equilibrium, the equilibrium would shift to the left side of the reaction (the reactant's side).

For a reaction that is in equilibrium, the reaction is balanced between the reactants and the products. According to Le Cha telier's principle, if one of the constraints capable of influencing the rate of reactions is applied to such a reaction that is in equilibrium, the equilibrium would shift so as to neutralize the effects created by the constraint.

Hence, in this case, if the concentration of the products of a reaction in equilibrium is increased, the equilibrium would shift in such a way that more reactants are formed so as to annul the effects created by the increase in the concentration of the products. Since reactants are always on the left side of chemical equations, it thus means that the equilibrium would shift to the left.

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2 years ago

If 294 grams of FeS2 is allowed ti react with 176 grams of O2 according to the following equation how many grams of Fe2O3 are pr

podryga [215]

You must balance your equation correctly.
Here is your answer:

294gFeS2 x 1molFeS2/119.99 x 11mols O2/4mols FeS2--> 6.738mol O2

176gO2 x 1mol O2/32gO2 x 4mols FeS2/11mol FeS2--> 2mols FeS2
Now choose the molecule with the lowest amount (Limiting Reagent)

2molsFeS2 x 2molsFe2O3/4molsFeS2 x 159.7g
159.7g Fe2O3 grams produced.

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3 years ago

Read 2 more answers

Why is the enzyme pectinase added during the manufacture of fruit juices?

MariettaO [177]

The choices can be found elsewhere and as follows:

A.The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice.. .
B.The enzyme pectinase enhances the taste of fruit juices, making them more popular.. .
C.The enzyme pectinase speeds up the breakdown of toxins in fruits, producing more juice.

The correct answer would be A. The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice. With this, the manufacturer company will get more volume of product from same amount of resource.

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3 years ago

Explain whether areas B and D show the same season.

torisob [31]

They do not show the same season. one is faced a different part of the sun

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3 years ago

Which of the following equations of CH4 + Cl2

mylen [45]

Balanced equation : C. CH₄ + 4Cl₂⇒ CCl₄+ 4HCl

<h3>Further explanation </h3>

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:

1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.

2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product

3. Select the coefficient of the substance with the most complex chemical formula equal to 1

Reaction

CH₄ + Cl₂⇒ CCl₄+ HCl

Give coefficient :

aCH₄ + bCl₂⇒ CCl₄+ cHCl

Make equation :

C, left=a, right=1⇒a=1

H, left=4a, right=c⇒4a=c⇒4.1=c⇒c=4

Cl, left=2b, right=4+c⇒2b=4+c⇒2b=4+4⇒2b=8⇒b=4

The equation becomes :

CH₄ + 4Cl₂⇒ CCl₄+ 4HCl

3 0

3 years ago