B. The neck is the most dangerous part of the rip current because the water’s speed increases and swimmers can be pushed farther into the ocean.
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
The amount of KCl that would be formed will be 478.8 grams
<h3>Stoichiometric calculations</h3>
From the equation of the reaction, the mole ratio of K to 
is 2:1.
Mole of 309 g potassium = 309/39 = 7.92 moles
Mole of 228 g Cl2 = 228/71 = 3.21 moles
Thus, potassium is in excess while Cl2 is limiting.
Mole ratio of Cl2 and KCl = 1:2
Equivalent mole of KCl = 3.21 x 2 = 6.42 moles
Mass of 6.42 moles KCl = 6.42 x 74.55 = 478.8 grams
More on stoichiometric calculations can be found here: brainly.com/question/27287858
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Answer:
Then, when students pulled the plastic through their fingers, electrons from their skin got onto the plastic. Since the plastic has more electrons than protons, it has a negative charge.
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