Answer:
Explanation:
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In this case, since the percent by mass of a solute in a solution is computed via the following division:
Next, given the mass of HCl and that of water, we plug them in to obtain:
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Explanation:
1mM of solution means millimolar, that is 1 millimole of solute is contained in 1 liter of solvent.
Converting mM to M,
150mM to M = 150*1 x 10^-3
= 0.15M
Number of moles = molar concentration * volume
= 0.15*0.5
= 0.075 moles.
Molar mass of NaCl = 23 + 35.5
= 58.5 g/mol
Mass of NaCl = molar mass * number of moles
= 58.5*0.075
= 4.3875g
Description:
• 4.3875 g of NaCl is measured on a measuring scale and poured in a conical flask.
• 1 liter of solvent is measured with a measuring cylinder and poured into the conical flask and mixed.
The properties are given below:
- Shape: Solids have definite shape; liquids take the shape of their container; gases have no shape.
- Volume: Solids have definite volume; liquids have definite volume; gases do not have a definite volume
<h3>What are the properties of solids, liquids and gases?</h3>
The property of solids, liquids, and gases refers to those features which are used to identify solids, liquids and gases.
Some property of solids, liquids and gases are shape and volume.
Shape: Solids have definite shape; liquids take the shape of their container; gases have no shape.
Volume: Solids have definite volume; liquids have definite volume; gases do not have a definite volume
In conclusion, solids, liquids and gases have unique properties in their shape and volume.
<h3 />
Learn more about shape and volume of solid, Liquid, and Gas at: brainly.com/question/10813056
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a. Which is the anode?
Al is more reactive than the Cu, because the reduction potential of Al is -1.676 V, so would turn to ions easily hence it would give electrons and form a cation and so it will be the anode.
b. Which is oxidized?
Copper is the cathode, because of its reduction potential +0.34 V, which has a higher affinity for electrons and so it will be the oxidizing agent which means the Al is oxidized.
c. What will the battery voltage be?
The voltage of the battery we can be calculated by using the reduction potentials of both elements:
E°battery = E°cathode - E°anode = E°Cu - E°Al = 0.34 - (-1.676) = 2.016 V
The cell have a spontaneous reaction because the voltage has a positive sign.
d. Write a balanced net ionic equation for the reaction that takes place.
Al + 3 Cu⁺ ----> Al³⁺ + 3 Cu