Which of the Following Sets of Elements or Compounds Are

question 62

Multiple Choice

Which of the following sets of elements or compounds are used to reduce iron(III) oxide (Fe2O3) to impure iron in a blast furnace?

• A) Hydrogen(g)and carbon(s)
• B) Chlorine(g)and carbon dioxide(g)
• C) Carbon(s)and carbon monoxide(g)
• D) Calcium silicate(s)and calcium oxide(s)
• E) Carbon dioxide(g)and calcium oxide(s)

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Definitions:

Region of Rejection

The range of values for which the null hypothesis is rejected in favor of the alternative hypothesis in hypothesis testing.

p < .05

Indicates that the probability of the observed data occurring under the null hypothesis is less than 5%, suggesting statistical significance.

Null Hypothesis

The presumption of no association or effect between variables, a stance taken until evidence suggests otherwise.

Probability

A numeric expression, ranging from 0 to 1, indicating the probability of an event happening.