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:
nowjebuskwnwbwisjshehwhwbwjhwhwjw
Hello!
The birth rate and the infant mortality rate
Bye and don’t forget I’m proud of you!<33
46-56 grams
Explanation: An average woman needs about 46 grams of protein per day; the average man about 56. Research shows that most Americans already get more than enough protein.
hope that helps if you have any questions let me know and if you could mark this as brainliest i would really appreciate it!
The death of a small star and a very massive star can be quite dramatically different.
Whereas a small star just shuts off, so to say, and becomes a white dwarf, usually massive stars die creating huge blackholes that can swallow many planets, and everything else around them. Small stars die with a so called "unnova," which means their death is silent. On the other hand, massive stars die creating supernovas, which is a catastrophic explosion.
