Some ways science benefits the science is by studying and making new treatements and helping the society
In a chemical reaction, matter can neither be created nor destroyed, so the products that come out of a reaction must equal the reactants that go into a reaction. Stoichiometry is the measure of the elements within a reaction.[1] It involves calculations that take into account the masses of reactants and products in a given chemical reaction. Stoichiometry is one half math, one half chemistry, and revolves around the one simple principle above - the principle that matter is never lost or gained during a reaction. The first step in solving any chemistry problem is to balance the equation.
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Answer:
0.026%
Explanation:
The Helium-4 is the isotope of the helium that has a mass equal to 4. The element has 2 electrons, so, the total radius of the electrons is 2*2.8 = 5.6 fm = 0.0056 pm.
So, the total radius of the particles is 0.0056 + 0.0026 = 0.0082 pm.
The percentage of the space that the particles occupy is the radius of them divided by the radius of the atom:
% = 0.0082/31 *100%
% = 0.026%
* 1 fentometer (fm) = 0.001 picometer (pm)
Answer:
The density of tin is 7.31 g/cm³.
Explanation:
Given that the formula of density is D = m/v where m represents mass and v is volume :
D = 16.52/2.26
D = 7.31 g/cm³ (3sf)
