What is the difference between hydrogen-2 and hydrogen-3?
A. Hydrogen-3 has one more neutron
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Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
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8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.
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