There are 252.07 grams of ammonium dichromate per mol of ammonium dichromate molecules. There are 8 atoms of hydrogen per molecule of ammonium dichromate.
Convert grams to mole of molecules. And then molecules to atoms.
55.90 / 252.07 = moles of molecules
Since there are 8 hydrogen per 1 molecule multiply this by 8.
55.90 * 8 / 252.07 = 1.77 moles of hydrogen
Answer:
A) does overeating cause obesity?
Explanation:
Terms in all of these questions often have fuzzy definitions, so it is often a matter of judgment whether a particular condition is or is not included in the discussion.
The question most likely to be considered a question of fact is ...
A) does overeating cause obesity?
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"Overeating" and "obesity" can be objectively defined, even if the causal relationship is less easy to establish.
"Beautiful" is usually a matter of opinion, and cannot be considered a matter of fact.
"Equal opportunities" is exceptionally difficult to define considering the range of personalities and abilities that may be offered a given opportunity. This is another term that is more a matter of opinion than of fact. Whether something "should" or "should not" be provided is, likewise, a matter of opinion (or personal philosophy or religion).
"Bad habit" is another descriptor that is difficult to say is a matter of fact. Whether something is "good" or "bad" depends on the goal, and the effect of procrastination depends on the circumstances.
Yaya says:
IQ Scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of IQ scores are between 70 and 130?
<span>Solution: </span>130 – 100 = 30 which is 2(15). Thus, 130 is 2 standard deviations to the right of the mean. 100 – 70 = 30 which is 2(15). Thus, 70 is 2 standard deviations to the left of the mean. Since 70 to 130 is within 2 standard deviations of the mean, we know that <span>about 95% of the IQ scores would be between 70 and 130.</span>
