Answer:
Matter cannot be created or destroyed.
Explanation:
According to law of conservation of matter, Matter can neither be created nor destroyed. It just gets converted into other forms.
So, It's important to equalize the no. of moles on either side of the chemical reaction.
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Hope this helped!
<h3>~AnonymousHelper1807</h3>
Answer:
b) 2.0 mol
Explanation:
Given data:
Number of moles of Ca needed = ?
Number of moles of water present = 4.0 mol
Solution:
Chemical equation:
Ca + 2H₂O → Ca(OH)₂ + H₂
now we will compare the moles of Ca and H₂O .
H₂O : Ca
2 : 1
4.0 : 1/2×4.0 = 2.0 mol
Thus, 2 moles of Ca are needed.
Answer:
On google it says this: HF will be the most soluble in water. Substances which form hydrogen bonding with polar water molecules are soluble in water. F has the highest electronegativity amongst other halogens.
Idk maybe A?
Explanation:
Answer: Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are called cations.
The acid and base have been differentiated based on different concepts. The given compound has been Arrhenius base and Brønsted Lowry base.
<h3>What is Arrhenius acid and base?</h3>
The Arrhenius acid has been given as the compound that adds hydrogen to the sample, and the Arrhenius base is the compound that adds hydroxide ions to the sample.
The given magnesium hydroxide is converted to magnesium sulfate and added hydroxide to the sample. Thus, the sample has been Arrhenius base.
The Brønsted Lowry acid has been the proton donor in the sample, and the Brønsted Lowry base has been the proton acceptor.
The magnesium hydroxide accepts the protons in the sample, and thereby it has been a Brønsted Lowry base.
Learn more about Arrhenius acid and base, here:
brainly.com/question/516295