All categories

3 years ago

How can a roman numeral in a chemical name be used to write a chemical formula?

Chemistry

2 answers:

Inga [223]3 years ago

7 0

Answer:

d) the roman numeral is the metal's oxidation state used as the subscript on the nonmetal in the crisscross method

Explanation:

a p e x :)

Oxana [17]3 years ago

4 0

Answer:

Roman numerals in a chemical formula indicate the charge on the metal cation before them. They are used in situations where the multiple oxidation states are available to the metal. For example, iron can be both 2+ and 3+, so to distinguish between the two, we use iron (II) and iron (III) respectively.

Hope i helped!

You might be interested in

What is Markanikov rule?

lana [24]

Markovnikov rule, in organic chemistry, a generalization, formulated by Vladimir Vasilyevich Markovnikov in 1869, stating that in addition reactions to unsymmetrical alkenes, the electron-rich component of the reagent adds to the carbon atom with fewer hydrogen atoms bonded to it, while the electron-deficient component ...

5 0

2 years ago

Read 2 more answers

Which is more soluble at 28

CaHeK987 [17]

Answer:

Explanation:

At 28 degrees highest line is CaCl2. Answer a.

3 0

3 years ago

Read 2 more answers

If a patient\'s blood pressure is 145 over 65 mmHg, what is it in atmospheres (atm)

kicyunya [14]

Converting mmHg to atm is solved by division.

Example: Convert 745.0 to atm.

Solution- divide the mmHg value by the 760.0 mmHg / atm.

745 mmHg over 760.0 mmHg/atm

atm value is 0.980263

Now, I am a medical student and we have never had to convert a BP (blood pressure) to atm from mmHg, only ever kPA. SO, I am going to take a guess here and say that when you do the work to solve this, you are going to convert the Systolic (upper #) which is the 145. You should get 0.190789 and then convert the Diastolic (lower #) which is 65. You should get 0.08552632.

So your fraction so to speak should read, 0.190789/0.08552632 or 0.190789 over 0.08552632

(Just to note that is way to low of a BP, although it is irrelevant) Best wishes and good luck. "Remember, never just look for the right answer, look for why it is the right answer!"

7 0

3 years ago

Read 2 more answers

Which is the correct Lewis dot structure of NH2?

Svetlanka [38]

Answer:

OE. E

Explanation:

7 0

3 years ago

A substance that can be broken down into simpler subtend only by a chemical change is aa. homogenous mixtureb. heterogeneous mix

Natasha2012 [34]

Answer:

d. compound

Explanation:

Mixture : It is defined as the substance that is made by the combination of two or more different components which are physically combined.

Homogeneous mixture are the mixtures in which the composition of the substances in it are uniformly mixed. Heterogeneous mixture are the mixtures in which the composition of the substances in it are not uniformly mixed.

Compound : It is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass and are chemically bonded.

Element : It is a pure substance which is composed of atoms of similar elements.

As discussed above, The different elements in the compounds are chemically bonded and hence, it is the substance which can be broken down into the simpler units when it subtend only by the chemical change.

3 0

3 years ago