The empirical formula of the compound is determined by converting the individual masses of each element to moles first. Hence for Mg, this is equal to 0.2042 moles, and oxygen is equal to 0.2 moles. We divide the number of moles to the smaller value between the two. For Mg, that is 1 as well as for oxygen. Hence the answer is MgO or magnesium oxide.
If the reaction started with 32g of Sulfur and 56 grams of Iron, then mass of produced FeS is 88 grams.
<h3>What is the relation between mass & moles?</h3>
Relation between the mass and moles of any substance will be represented as:
n = W/M, where
- W = given mass
- M = molar mass
Moles of Fe = 56g / 56g/mol = 1 mol
Moles of S = 32g / 32g/mol = 1 mol
Given chemical reaction is:
Fe + S → FeS
From the stoichiometry of the reaction same moles of iron and sulfur are required to produce equal moles of iron sulfide. Means 1 mole of iron produces 1 moles of iron sulfide and mass of iron sulfide will be calculated as:
W = (1mol)(88g/mol) = 88g
Hence required mass of iron sulfide is 88 grams.
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Ra-226 will go through α decay which means the nucleus of radium-226 will emit a α particle. α particle consists of 2 protons and 2 neutrons. So it will become Rn-222.
Answer:
D. O – H
Explanation:
- The electronegativity of the elements in the question is:
<em>H (2.20), S (2.58), Cl (3.16), N (3.04), O (3.44), and C (2.55).</em>
- Since, the H atom has the lowest electronegativity (2.20) and O atom has the highest electronegativity (3.44).
- <em>So, O - H pair of atoms has the highest electronegativity difference.</em>
The two different mineral elements that a fertilizer can contain are:
- Phosphorus - build up of nucleic acid and ATP
- Nitrogen- synthesis of proteins
<h3>What are fertilizers?</h3>
Fertilizers are chemical substances added to the soil in order to improve crop growth and development.
Fertilizers are artificially made to contain mineral elements that are needed by the plants. Some of the mineral elements are as follows:
- Phosphorus
- Nitrogen
- Pottasium
- Phosphorus helps in the build up of nucleic acids and ATP for energy.
- Nitrogen is useful in the synthesis of proteins.
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