How Many Grams of H₂O Will Be Formed When 39

question 59

Multiple Choice

How many grams of H₂O will be formed when 39.0 g H₂ is mixed with 49.6 g O₂ and allowed to completely react to form water?

• A) 88.6 g
• B) 55.8 g
• C) 27.9 g
• D) 351 g
• E) 59.1 g

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Definitions:

Mental Age

An assessment of a child’s intellectual standing compared with that of same-age peers; determined by comparing the child’s test score with the average score for children of each chronological age.

Wechsler Adult Intelligence Scale

A standardized test designed to measure adult intelligence through various verbal and performance indicators.

Verbal Scale

A scale used to measure subjective phenomena where responses are given in words rather than numbers or graphical symbols.

Mental Age

An assessment of an individual's mental capability expressed in terms of the average abilities of a certain age group.