Answer:
0.062 moles of hydrogen gas
Explanation:
We must first out down the reaction equation before we can attempt to solve the problem.
Mg(s) + 2HCl(aq) ----> MgCl2(aq) + H2(g)
Next we obtain the number of moles in 1.5 g of magnesium metal from;
Molar mass of magnesium = 24.3 gmol-1
Number of moles of magnesium= mass/molar mass = 1.5g/24.3gmol-1 = 0.062 moles
From the reaction equation;
1 mole of magnesium metal yields 1 mole of hydrogen gas
0.062 moles of magnesium metal will yield 0.062 moles of hydrogen gas
Therefore, reaction of 1.5g of magnesium metal with excess hydrochloric acid will yield 0.062 moles of hydrogen gas.
Answer:
Repolarization
Explanation:
Repolarization refers to the phase during which the resting potential is restored after depolarization. This means that the inside of the axon membrane becomes negative again compared to the outside.
Repolarization is obtained by the functioning of K+ ion channels. The opening of K+ ion channels allows the K+ to move outside of the axon. Movement of positively charged ion (K+) outside of axon makes the inside negative again and the resting potential is restored.
Answer:
from areas of high pressure to areas of a low pressure hope it helps
Explanation:
<span>A) Abdominopelvic and abdominal
Operation on the intestine wouldn't have to open thoracic cavities since the intestine located in the abdomen and near pelvic. Pericardial cavity is also located near thoracic cavity and it's opened on heart surgeries.</span>
Answer: a. Nutritional genomics
Explanation: Nutritional genomics is a branch of nutrition that studies the interrelationship between nutrition, human genome and health. It is aimed at preventing, treating and managing various diseases through nutritional therapies that are formulated to suit an individuals' genetic make up.
