How many atoms are in 1.00 moles of He
1 answer:
Answer:
1.00 mole of He have atoms.
Explanation:
To solve this exercise it is important to know the definition of Avogadro's number
Avogadro's number is the proportional factor that relates the molar mass of a substance to the number of elementary units (atoms, molecules, particles, ions, electrons) that constitute it and its magnitude is equal to 6.022 140 857 × 10²³
One mole of helium we have atoms.
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Explanation:
(a) Balanced reaction of gallium with oxygen is as follows:
(b)
Multiply the carbon dioxide by 6 to balance carbon as follows:
After that multiply H2O by 7 to balance hydrogen as follows:
Finally balance oxygen by multiplying O2 by 19/2. Therefore, balanced reaction is as follows:
(c)
first balance calcium, by multiply by 3 as follows:
After that balance phosphorous by multiplying by 2 as follows:
Finally balance Na by multiplying NaCl by 6. Therefore, balance reaction is as follows: