Heat speeds up chemical reaction.The less water in the desert, which is a crucial element in performing chemical weathering...
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<span>Quanta are described as discrete packets of energy because it requires a certain amount of energy (not just any amount of energy that is continuous) to excite electrons from one state to another.
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2 atome nitrogen , 1 is correct
Answer:Flouride it creates enamel.
Explanation:
enamel (that's the tooth's hard outer surface) more resistant to acids produced by the bacteria living on the teeth and gums.
Answer:
427.5g
Explanation:
Given parameters:
Number of moles = 4.5moles
Unknown:
Mass of MgCl₂ = ?
Solution:
To solve this problem;
Mass = number of moles x molar mass
Molar mass of MgCl₂ = 24 + 2(35.5) = 95g/mol
Mass = 4.5 x 95 = 427.5g
