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pochemuha
4 years ago
10

Help me please !! It would mean a lot ;)

Chemistry
1 answer:
sweet-ann [11.9K]4 years ago
7 0

<u>Science</u> is the investigation and exploration of natural events and of the new information that results from those investigations. Scientists use a set of skills called <u>hypothesis</u> to find answers to their questions. <u>Scientific inquiry</u> is a scientific skill that involves using your senses to gather information and take not of what occurs. Aftermaking an observation, a scientist might form a(n) <u>observation</u>, which is a possible explanation about an observation that can be tested by <u>Scientific Investigations</u>. When a scientist forms a hypothesis, he or she usually makes a(n)  <u>Conclusion</u> or a statement about what will happen next in a sequenceof events. After a hypothesis is tested, a scientist might <u>analyze</u> the results. A scientist might then draw a(n) <u>prediction</u> based on the results. Scientist write articles or speak at confrences to <u>communicate</u> their results to other scientists and to the public.

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3 years ago
How is the oxidation state of a transition metal determined from the chemical formula ?
Vera_Pavlovna [14]

Answer:

Explanation:

In a chemical formula, the oxidation state of transition metals can be determined by establishing the relationships between the electrons gained and that which is lost by an atom.

We know that for compounds to be formed, atoms would either lose, gain or share electrons between one another.

The oxidation state is usually expressed using the oxidation number and it is a formal charge assigned to an atom which is present in a molecule or ion.

To ascertain the oxidation state, we have to comply with some rules:

  • The algebraic sum of all oxidation numbers of an atom in a neutral compound is zero.
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For example, let us find the oxidation state of Cr in Cr₂O₇²⁻

This would be:  2x + 7(-2) = -2

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We see that the oxidation number of Cr, a transition metal in the given ion is +6.

7 0
4 years ago
Read 2 more answers
Some chemical compounds are listed in the first column of the table below. Each compound is soluble in water. Imagine that a few
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Ionic substances produce ions in solution while molecular substances produce molecules in solution.

<h3>What is a solution?</h3>

A solution is a combination of solute and solvent. The species that occur in solution depends on the type of substance that was dissolved. Since the table is not shown, we do not know exactly what compounds were dissolved in solution.

Generally, if an ionic substance is dissolved in solutions that ions are present in the solution. If a molecular substance is dissolved in solution, molecules are present in solution.

Learn more about solution: brainly.com/question/7932885

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2 years ago
Calculate the volume in liters of 14.4 moles of neon gas at STP
AlekseyPX

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3 years ago
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The vapor pressure of the jar with a large amount of water and the jar with a small amount of water is the same. Vapor pressure is an intrinsic property. This means that this property is not dependent on the amount of the substance. Vapor pressure is dependent only on temperature and since the temperature is the same for both jars, their vapor pressures are also the same.
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3 years ago
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