Answer: 0.043g
Explanation:
chemical formular of perchloric acid is HClO4
no. of moles = mass / molar mass
n = m / mm
m = n x mm
n = 4.25 x 10^-4 mol
m = ?
mm = 1 + 35.5 + (16 x 4) = 100.5g/mol
m = 4.25 x 10^-4 mol x 100.5g/mol
m = 0.043g
All of the elements from Cs to At
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<span>a. gains a proton and loses a neutron. </span>This process gives more stability to the atom.
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Answer:
2.62*10^-3
Explanation:
To do this by hand, you need to understand the rules of scientific notation.
