Answer: D
A catalyst is a substance that alters the reaction and doesn't involve in the reaction.So if the Manganese was a catalyst the mass would not have decreased,it would just continue aletring the reaction until its used up.
The Manganese is not acting as a catalyst
Many are poor and isolated from the rest of the world. Others hold to their traditional ways and are reluctant to change
Well, <span>The major </span>difference between the North and the South<span> -- and the one most responsible for the Civil War -- was the institution of slavery. In the </span>North, slavery was almost universally prohibited <span>by the </span>1800s<span>, while the institution was a cornerstone of </span>Southern<span> society.</span>
<span>The Mayflower Compact was the first written form of government in the new world.</span><span>
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the immediate cause of the rebellion was rumors that were spreading among the indian soldiers regarding the new cartridges they had been issued.the rumors said that there cartridges were made with either pork or beef fat, this would have made the soldiers violate there religious laws
