CHEMISTRY HIGH SCHOOL

On the pH scale, a 7 indicates _____.
a base
an acid
neutrality

Answers

Answer 1
Answer:

Answer:   C) Neutrality

Explanation:
Answer 2
Answer:

Answer:

Neutrality

Explanation:

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The two ways that energy can be transferred are as heat or as work. True or False?

Answers

the correct answer would be false

The answer is True, I've taken this test.

Rainforests are principally responsible for global oxygen turnover true or false

Answers

Answer:

False

Explanation:

Rainforests are very important for global oxygen movement, but they are not the main element for oxygen movement.

Seaweed is the real lung of the world, it is primarily responsible for the global movement of oxygen as it produces more oxygen through photosynthesis than it needs in breathing, and the excess is released into the environment. Rainforests release much less oxygen into the atmosphere worldwide, as most of the gas produced is consumed in the forests themselves. However, rainforests are extremely important and should not be destroyed.

false.....................................

How does this data provide evidence for base pairing in dna

Answers

Answer:

There are chemical cross-links between the two strands in DNA, formed by pairs of bases. They always pair up in a particular way, called complementary base pairing: thymine pairs with adenine (T–A) guanine pairs with cytosine (G–C)

Explanation:

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A solute is added to water and a portion of the solute remains undissolved. When equilibrium between the dissolved and undissolved solute is reached, the solution must beA)dilute  B) saturated  C) unsaturated  D) supersaturated

Answers

Answer: Option (B) is the correct answer.

Explanation:

A solution that has maximum concentration of solute particles and on adding more solute the particles of solute remains undissolved is known as a saturated solution.

Whereas when particles of solute keep on dissolving in a solution then it is known as an unsaturated solution.

Thus, we can conclude that a solute is added to water and a portion of the solute remains undissolved. When equilibrium between the dissolved and undissolved solute is reached, the solution must be saturated.
when the solute can no longer dissolve in the solution the solvent becomes SATURATED. When no more solute can dissolve and if you look at the bottom of the beaker, test tube, pan, or glass of cold tea you can see the solute permeating out as little particles .

Why is the equation incorrect? Mg₃ + N₂ → Mg₃N₂(A) Some of the subscripts are incorrectly used.
(B) The equation is not balanced.
(C) The valence of the nitride ion is incorrect.
(D) The valance of the magnesium ion is incorrect.
(E) The coefficient of N₂ is incorrect.
Can someone explain this one?

Answers

the valency of nitride and magnesium is incorrect
The calence of nitride ion is incorrect. Nitride ion's valency is 3- (N3-)

What is the similarity of the numbers 85,19,17,4&2?

Answers

♥ In fact, the similarity of the numbers 85,19,17,4&2 is that they are all divisors of 6460.
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