Answer:
- Volume of the solution will increase.
- Molarity will decrease.
Explanation:
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In this case, for molarity, unit of concentration relating the moles of solute and volume of solution, we have:
Hence, since the given molarity is 0.70M, we first shall infer that by adding more water, that for sure is the solvent, the volume of the solution will increase which will be the first change. Moreover, since the volume and the molarity are in an inversely proportional relationship, as the volume increases the molarity decreases, which is the other change. In addition to the aforementioned statements, the moles of the solute are not modified as just water is added.
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The equation that is a decomposition reaction is
PbCO3(s) ---> PbO(s) + CO2(g)
That is option D.
<h3>Properties of a decomposition reaction</h3>
A chemical reaction is defined as the combination of substances called reactants to form a product. The various types of chemical reaction include:
- single or double replacement reaction
Decomposition reaction is that type of chemical reaction in which the reactant breaks down to form two or more products.
Therefore the heating of lead (II) carbonate is a decomposition reaction.
Learn more about decomposition reaction here:
brainly.com/question/15229375
Density is an important physical property. Density is the mass of a substance per unit volume. Volume is the amount of space an object occupies.
Answer:
the force that will be required is 0.55N
Answer:
Explanation:
Identify all of the compounds present:
- aqueous copper(II) sulfate: we have copper charged as 2+, sulfate anion has a charge of 2-. This means the charges are balanced if we take 1 ion of each to give ;
- solid iron metal: iron metal is Fe, then including the state of iron, we have ;
- aqueous iron(II) sulfate: iron has a charge of 2+, sulfate has a charge of 2-, so the positive charge balances the negative charge to give a formula of ;
- solid copper metal: copper metal is Cu, then including the state of copper, we have .
We then have a reaction: