Answer:
132 g
Explanation:
Given data:
Mass of silver nitrate react = 260 g/100×80 = 208 g
Mass of silver metal produced = ?
Solution:
Chemical equation:
Cu + 2AgNO₃ → 2Ag + Cu(NO₃)₂
Number of moles of AgNO₃:
Number of moles = mass/molar mass
Number of moles = 208 g/ 169.87 g/mol
Number of moles = 1.22 mol
Now we will compare the moles of silver with solver nitrate from balance chemical equation.
AgNO₃ : Ag
2 : 2
1.22 ; 1.22
Mass of Ag:
Mass = number of moles × molar mass
Mass = 1.22 mol × 107.8682 g/mol
Mass = 132 g
Acidity is caused by a losing <span>H+</span><span> ions. How acidic a substance is depends on how easily it will split with the hydrogen ions in water.
In your question, carboxylic acids are the most acidic because they have two oxygen atoms on the carbon to which the carboxyl group is attached, whereas the alcohol only has one and the alkyne has none, like I said earlier, this makes the hydrogen ion partially positive and therefore easier to lose.
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B. False. It is banned worldwide for agricultural uses. The <span>use of DDT is still authorized in small proportions in countries that need it, with support deployed for the alteration to safer and more effective alternatives.</span>
Explanation:
What you call polyester is technically polyethylene terephthalate or PET plastic molded into filaments that are then woven into fabric. It's made in a chemical reaction between ethylene glycol and therephthalic acid, and these chemicals are derived from fossil fuels, air, and water.
Nylons are condensation polymers or copolymers, formed by reacting difunctional monomers containing equal parts of amine and carboxylic acid, so that amides are formed at both ends of each monomer in a process analogous to polypeptide biopolymers. Most nylons are made from the reaction of a dicarboxylic acid with a diamine or a lactam or amino acid with itself
The binder resin in acrylic paint is man-made, most of the time in some sort of lab. It is made generally from the monomer methyl methacrylate and also any real common catalyst. The catalyst speeds up the reaction to where the monomers create extremely long chains. Which result in polymethyl methacrylate, an acrylic plastic polymer.
The pigments are also mostly made in labs/factories. Most of the time they are either pure elements like pure cobalt powder and carbon charcoal, or they basic bounded compounds like cadmium sulfide. To make cadmium sulfide you react cadmium chloride with hydrogen sulfide to make a bright yellow solid. It is then washed and heated to make a spectrum of different colors.
Basically all of acrylic paints are man-made through various chemical reactions.
The answer is- Magnitude of melting point of group 1A metals decreases down the group.
The melting point is the temperature at which a given solid material changes from a solid state to a liquid or melt state.
On what factors, the melting point of an atom depends?
- The melting point is governed by the attraction of the electrons of an atom towards its nucleus.
- Thus, size of the ion plays crucial role. Smaller the size of ion, greater is the attraction and thus greater is the melting point.
- Now, Group 1A elements are also called alkali metals and they include Lithium, Sodium, Potassium, Rubidium, Cesium, and Francium.
- As moving down the group, the size of atom increases , thus the attraction between the electrons and nucleus decreases, and thus the melting point decreases.
To learn more about the melting point of alkali metals, visit:
brainly.com/question/15220625
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