Answer:
[A] Melting
Explanation:
From the giving it means:
H2O(s) - Solid {Ice}
H2O(l) - Liquid {water}
So the equation is:
Liquid ⇒ Solid + Heat
Water ⇒ Ice + Heat
Hence, if you add ice and heat it equal to melting.
Therefore the correct answer is [A] Melting.
<u><em>Kavinsky</em></u>
2 H₂ + O₂ → 2 H₂O
Al₂O₃ + 6 HCl → 2 AlCl₃ + 3 H₂O
CH₄ + 2 O₂ → CO₂ + 2 H₂O
Explanation:
To balance the chemical equations the number and type of atoms entering the reaction have to be equal to the number an type of atoms leaving the reactions. To do this we add coefficients (usually integer numbers) before each substance.
So we have the following balanced chemical reactions:
2 H₂ + O₂ → 2 H₂O
Al₂O₃ + 6 HCl → 2 AlCl₃ + 3 H₂O
CH₄ + 2 O₂ → CO₂ + 2 H₂O
Learn more about:
balancing chemical equations
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<span>Because its a Chemical combination of 2 different pure Elements, it's a Compound. </span>
A chemist reacted 0. 2 moles sodium benzoate with 0. 25 moles of hydrochloric acid. if she generated 22 g benzoic acid, the percent yield is 90%.
Reactant + HCl ------ Product
0.2 mol 0.25 22g
mol
Number of moles of reactant = 0.2mol
Molar mass of product = 122.12g
Number of moles of product = given mass/ molar mass
= 22g/ 122.12 g
= 0.180mol
Percent yield = (number of moles of product/ number of moles of reactant) × 100
= (0.180/0.2) × 100
= 90%
Thus we concluded that the percent yield of the given solution is 90%.
learn more about percent yield:
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Answer:
did you ever get the answer lol