Answer:
Scale Factor: 1 : 2
X = 11
Explanation:
3 / 3 = 1
6 / 3 = 2
The scale factor should be 1:2
So 'X' should be 11 since 5.5 * 2 = 11
I'll explain with the help of examples:
Solution :<span>is basically two substances that are evenly mixed together. One of them is called the </span>solute <span>and the other is the </span>solvent
Solvent:<span> is the substance to be dissolved (sugar).</span>
Solutes:<span>The </span>solvent<span> is the one doing the dissolving (water)</span>
From the periodic table as well as the patterns and trends on the table, the correct option are:
- the best conductor of electricity is Titanium; option A
- the most reactive element is oxygen; option C
- the elements that has the highest electronegativity is oxygen; option C
<h3>What is the periodic trends in the periodic table?</h3>
Periodic trends in the periodic table refers to the variation in character which is observed in the periodic table as one moves across the periodic table from left to right across a period or down a group in the periodic table.
The periodic trend observed is that reactivity of metals increase down a group and from right to left across a period.
For non-metals, reactivity of non-metals increase from down to top in a group and from left to right across a period across a period.
Considering the given questions;
1. From the periodic table as well as the patterns and trends on the table, the best conductor of electricity is Titanium since it is the only metal in the list.
2. The most reactive element is oxygen because it is a non-metal found to the top-left of the periodic table.
3. The elements that has the highest electronegativity is oxygen because it is a non-metal found to the top-left of the periodic table.
Learn more about periodic trends at: brainly.com/question/28161428
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Answer:
To answer the question, we correctly fill the attached screenshot as follows;
- 3H₂ + N₂ → 2NH₃
- The molar mass of H₂ = 2 g/mol
The molar mass of N₂ = 28 g/mol
A. Therefore, the excess reactant is hydrogen gas H₂ because it makes the most amount of ammonia, NH₃ (33.
moles of NH₃)
B. The limiting reactant in nitrogen, N₂, because it is the reactant that makes the least amount of the ammonia, NH₃ (approximately 7.143 mol NH₃)
C. The theoretical yield of ammonia, is the maximum amount of ammonium that can be produced from the reaction between the 100 g of hydrogen gas, H₂, and 100 g of nitrogen gas, N₂ which is given by the amount of ammonia produced by the limiting reactant which is approximately 7.143 mole of NH₃
Explanation:
Answer:
a. The formula for tritoborate ion is B₃O₈²⁻
b. The formula of the compound formed will be Fe₂(B₃O₈)₃ and the name will be Iron (iii) tritoborate
Explanation:
The formation of compounds by atoms of elements occurs in accordance with the valencies of the elements. Valency refers to the combining power of an element. For metallic elements, it is usually the number of electrons they can give up or lose while for non-metallic elements, it is the number of electrons they can accept. The valency of an atom of an element is related to its oxidation number. Metals have positive oxidation numbers while non-metals have negative oxidation numbers. Sometimes, two or more atoms combine together and react as a single unit and may carry a positive or negative charge. These are known as a radicals. For example, ammonium ion, NH₄⁺.
In the given question, calcium tritoborate, CaB₃O₈ is formed from the combination of calcium ion and tritoborate ion. Calcium ion carries the charge of +2, therefore, the tritoborate ion must have a charge of -2 in order to form a compound since the overal charge on a compound is zero.
a. let the tritoborate ion be represented by X
Ca = +2, X = ?
+2 + X = 0
X = -2
Thus, the formula for tritoborate ion is B₃O₈²⁻
b. When tritoborate ion combines with iron (iii) ion, Fe³⁺, two moles of Fe³⁺ will be required to react with three moles of B₃O₈²⁻ in order to have a neutral compound. The formula of the compound formed will be: Fe₂(B₃O₈)₃ and the name will be Iron (iii) tritoborate
