Answer:
0.02498 L
Explanation:
CaCO₃ + 2 HCl ➔ CaCl₂ + H₂O + CO₂
You have to use stoichiometry. According to the chemical equation, for every one mole of CaCO₃, two moles of HCl is needed for the reaction to occur. Before you can use this relation you need to convert grams of CaCO₃ to moles. To convert, you need to use the molar mass.
Molar mass of CaCO₃ = 100.086 g/mol
(0.2500 g)/(100.086 g/mol) = 0.002498 mol CaCO₃
Now using the relation of 1 mol of CaCO₃ for every 2 mol of HCl, convert moles of CaCO₃ to moles of HCl.
(0.002498 mol CaCO₃) (2 mol HCl)/(1 mol CaCO₃) = 0.004996 mol HCl
Since the molarity of the solution of HCl is 0.200 M (mol/L), you have to divide the amount of moles needed by the molarity of the solution.
(0.004996 mol HCl)/(0.200 M) = 0.02498 L
You will need 0.02498 L to react with 0.2500 g of CaCO₃.
Organelles are able to use photosynthesis because they have chlorophyll produced by the chloroplasts
Answer:
Hexanoic acid is water insoluble and sodium hexanoate is water soluble
Explanation:
Hexanoic acid is water insoluble because of presence of long 6 membered non polar and hydrophobic hydrocarbon chain.
When hexanoic acid is treated with NaOH, it is converted to an ionic salt sodium hexanoate which is highly soluble in water because of it's ionic nature.
So, the reaction is given as:
Hexanoic acid + NaOH
Sodium hexanoate + water
Reaction in terms of molecular structure has been shown below.
Lipids are hydrophobic; They would be insoluble, group together, and float to the top
Average velocity (v) of an object is equal to its final velocity (v) plus initial velocity (u), divided by two. Where: ¯v = average velocity.
Hope this helps :)
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