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3 years ago

Please help I will mark Brainly

Chemistry

1 answer:

Talja [164]3 years ago

4 0

The reactants are the substances on the left side, which react and give the products on the right side.
The reactants are Fe and O.
The product is Fe2O3.
The arrow to the right means that the reaction is going in only one direction — the only reaction happening at the moment is that Fe and O are making Fe2O3.
(s) means the substance is in the solid state, and (g) means in a gaseous state (or the substance is a gas in that reaction).

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If you can answer as many of these as possible that would be great, will give thanks, 5 stars, and brainliest :)

alexandr1967 [171]

Answer:

The nucleus of the atom as suggested by "nuclear" chemistry.
Radioactive element are generally very large due to both their high number of protons, neutrons, and electrons.
An excessive amount of protons or neutrons.
Periodic table, table O, and table N.
Personal opinion question.
The atomic number.
It represents the number of protons, and can also represent the number of electrons in a neutral atom (an atom with no charge).
Protons ---- element.
Random, self-generated.
Gamma radiation is the only thing on table O that is mass less. Close to being the same is Beta particles which have almost no mass.
Neutrons and Gamma radiation.
Gamma radiation.
Electrons and Beta particles.
To turn one element into the isotope of another. Yes, I believe it is aptly named because you are changing the identity of the element.
The number of protons because they are what define the identity of an element.

Goodluck!

3 0

3 years ago

What is an easy science subject to write an 8 page essay on?

WINSTONCH [101]

Calculating speed or atoms and molecules or planets!

Hope i helped plz mark as brainlist!

8 0

3 years ago

Read 2 more answers

What mass percent solution will result from dissolving 0.126 moles of AgNO3 in 475 g. of water

Kruka [31]

Answer:

The answer to your question is: 4.5 %

Explanation:

0.126 moles of AgNO3

mass percent = ?

mass of water = 475 g

Formula

weight percent = weight of solute / weight of solution x 100

Weight of solute

MW AgNO3 = 108 + 14 + (16 x 3)

= 108 + 14 + 48

= 170 g

170 g of AgNO3 ------------------- 1 mol

x --------------------- 0.126 moles

x = (0.126 x 170) / 1 = 21.42 g of AgNO3

Weight percent = 21.42/475 x 100

= 4.5 %

7 0

3 years ago

The number of protons in an atom is known as its .......... ...........?

Tanzania [10]

Answer:

Atomic number

Explanation:

Atomic number is the number of protons, and therefore also the total positive charge, in the atomic nucleus. The Rutherford–Bohr model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1).

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3 years ago

When using ph paper, the ph of a solution can be determined by looking at the _______ of the paper?

Scorpion4ik [409]

The colour of the paper

7 0

3 years ago