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otez555 [7]
3 years ago
6

Iron and oxygen react together to make iron (III) oxide (rust). You know that this is a chemical reaction and not a nuclear reac

tion because:
a large amount of heat is produced by the reaction
the individual atoms are rearranged but do not change identity
new products are formed as a result of the reaction
the rust has a greater mass than the iron and oxygen used to produce it
Chemistry
2 answers:
Alona [7]3 years ago
7 0
The atoms didn't change we only added 2 different ones together. 2nd one is right
viva [34]3 years ago
6 0

Answer:

The individual atoms are rearranged but do not change identity

Explanation:

Hi, identity of an element is given by the amount of protons it has in its nucleous: two different elements must have different amounts of protons.

During a chemica reaction, such as the one between oxygen and iron, the atoms of the two elements create bonds but no a new element: they identities remain intact, so this is not a nuclear reaction

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Please someone explain this too me​
Brums [2.3K]
I believe it would be 7.731. x 10^5? That is if they want you to evaluate.
3 0
3 years ago
11. If four gases in a cylinder each exert 6 atm, what is the total pressure exerted by the
Debora [2.8K]

Answer:

24 atm is the total pressure exerted by the gases

Explanation:

We propose this situation:

In a vessel, we have 4 gases (for example, hydrogen, Xe, methane and chlorine)

Each of the gases has the same pressure:

6 atm → hydrogen

6 atm → xenon

6 atm → methane

6 atm → chlorine

To determine the total pressure, we sum all of them:

Partial pressure H₂ + Partial pressure Xe + Partial pressure CH₄ + Partial pressure Cl₂ = Total P

6 atm + 6 atm + 6 atm + 6 atm = 24atm

8 0
3 years ago
What is the molar mass, in grams, of a mole of an element equal to?
prohojiy [21]
Technically molar mass cannot be in grams, it is in grams per mole. and it refers to a specific number of molecules of a substance, therefore substances have different molar masses because the elements have different weights. for example having 10 water molecules would be a lot heavier than having 10 air molecules
6 0
2 years ago
What is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? As air
Marina86 [1]

We need to know the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure.

The relationship is: As air pressure in an area increases, the density of the gas particles in that area increases.

For any gaseous substance, density of gas is directly proportional to pressure of gas.

This can be explained from idial gas edquation:

PV=nRT

PV=\frac{w}{M}RT [where, w= mass of substance, M=molar mass of substance]

PM=\frac{w}{V}RT

PM=dRT [where, d=density of thesubstance]

So, for a particular gaseous substance (whose molar mass is known), at particular temperature, pressure is directly related to density of gaseous substance.

Therefore, as air pressure in an area increases, the density of the gas particles in that area increases.

3 0
3 years ago
Calculate the molarity of 0.850 mol of Na2S in 1.70 L of solution.
Basile [38]

Molarity is simply the ratio of the number of moles of a substance over the total volume of the solution. Assuming that the addition of 0.850 moles does not change the overall volume of 1.70 L, therefore molarity is simply:

 

Molarity = 0.850 moles / 1.70 L = 0.5 moles / L = 0.5 M

5 0
3 years ago
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