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bogdanovich [222]
2 years ago
9

What s thisssss oneeeeeee

Chemistry
1 answer:
ZanzabumX [31]2 years ago
3 0
C
Explanation- equals 459
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HELP ASAP 20 POINTS AAAA
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Me and my friends were going to do a science experiment. Jonny’s job was to make the HYPOTHESIS. He said the “ If we mix baking soda and vinegar together, the TEMPERATURE will go down.”

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2 years ago
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How many atoms of hydrogen are present in 7.63 g of ammonia? please help me ??
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The atoms  of  hydrogen  that are  present  in  7.63 g  of ammonia(NH3)

find  the  moles  of NH3 =mass/molar mass
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since there  is  3 atoms of H  in NH3 the  moles of  H = 0.449 x 3 = 1.347 moles

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= 1.347  moles/1   moles  x 6.02 x10^23 atoms = 8.11 x10^23  atoms of Hydrogen
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3 years ago
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