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3 years ago

I NEED HELP PLEASE! THIS IS HARD FOR ME!!

Chemistry

1 answer:

KonstantinChe [14]3 years ago

7 0

Answer:

it should be D! hopes this helps

from all the layer the fossil cant disappear so not C and cNf decrease because there are to many layers so not a but it could be B but d seems to make more sense

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How to identify a chemical reaction

Kamila [148]

Explanation:

We can tell if a chemical reaction has taken place when one or more of the following things happen:

1.There has been a colour change inside the reaction flask.

2. A gas has formed. Usually we know a gas has formed when we can see bubbles.

3.A solid has formed.

hope this answer helps!!!

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3 years ago

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Balance each reaction and write its reaction quotient, Qc:(a) NO₂Cl(g) ⇄ NO₂(g) + Cl₂(g)

AleksAgata [21]

When we balance the given equation

NO₂Cl(g) ⇄ NO₂(g) + Cl₂(g)

We will get

2NO₂Cl(g) ⇄ 2NO₂(g) + Cl₂(g)

Solution:

Balancing the given equation

NO₂Cl(g) ⇄ NO₂(g) + Cl₂(g)

We have to balance the number of Cl

2NO₂Cl(g) ⇄ NO₂(g) + Cl₂(g)

We have to balance the number of N, O.

2NO₂Cl(g) ⇄ 2NO₂(g) + Cl₂(g)

We will get the balanced equation

2NO₂Cl(g) ⇄ 2NO₂(g) + Cl₂(g)

The reaction quotient will be

Qc = [product] / [reactant]

Qc = [NO₂(g) + Cl₂(g)] / [NO₂Cl(g)]

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brainly.com/question/26694427

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2 years ago

Is it possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recess

Fynjy0 [20]

The right answer for the question that is being asked and shown above is that: "TRUE." It is possible for parents whose alleles for a dominant trait are homozygous dominant to have offspring with a homozygous recessive trait. This is true.

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4 years ago

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A large number in front of a compound designates how many units there are of that compound. Parentheses can be used to designate a special structure, where other molecules are attached to the larger, complex molecule.

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3 years ago

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If the pH of the solution is 10, what is the [OH-] concentration?

swat32

Answer:

1× $10^{-4}M$