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Superscript 239 subscript 94 upper P u right arrow variable X plus superscript 4 subscript 2 upper H e. What is X?
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An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron
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Select the statement that describe chemical properties a. antacid tablets neutralize stomach acid b. helium is the lightest monatomic element c. water freezes at 0 celsius d. mercury is liquid at room temperature
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8. how much enthalpy/heat is transferred when 0.5113gof ammonia (nh3) reacts with excess oxygen according| to the following equation: 4nh3 +502 - 4n0+ 6h20ah = -905.4j
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Superscript 239 subscript 94 upper P u right arrow variable X plus superscript 4 subscript 2 upper H...
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