The surface air that flows from these subtropical high pressure belts toward the equator is deflected toward the West in both hemispheres by the Coriolis effect. These winds blow predominantly for the northeast in the northern Hemisphere and from the southwest in the Southern Hemisphere
Answer:
200 mL of water is needed to make up a 6.00% (m/v) solution of copper (II) sulphate when 12.0 g of it will be added to water.
Explanation:
The solution is the result of the mixture between the solute, which is the substance that dissolves, and the solvent, which is the substance in which a solute dissolves. That is, a solution (or solution) is a mixture of two or more components, perfectly homogeneous since each component is intimately mixed with the other.
The concentration of solutions is the amount of solute contained in a given amount of solvent or solution. A unit of concentration is the percent weight to volume.
The percent weight to volume is the percentage ratio between the weight of the solute and the volume of the solution. It is calculated as:
Mass is measured in grams, while volume is measured in mL.
In this case:
- Percent weight to volume= 6%
- mass of solute= 12 g
- volue of solution= ?
Replacing:
Solving:
volume of solution*6= 12 g*100
volume of solution= 200 mL
<u><em>200 mL of water is needed to make up a 6.00% (m/v) solution of copper (II) sulphate when 12.0 g of it will be added to water</em></u>
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Answer:
The enthalpy change for the reaction is ΔH = - 54.3 kJ/mol
Explanation:
The reaction between HCl and NaOH is a neutralization reaction:
Heat released during neutralization = Heat gained by water
i.e.
where:
m = total mass of solution
ΔT = change in temperature = 22.8 - 21.5 = 1.3 C
c = specific heat = 4.18 J/g C
As per equation (1): qrxn = -434.7 J
The reaction enthalpy ΔH is the heat released per mole of acid (or base)
Answer:
Layer D
Explanation:
First means older.
Rock E is an intrusion, so it is younger than all the layers it pass through. Apparently, Rock E is the youngest layer. So, Layer D is came before Layer E.
Hope this helps!
Have a great day :)