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Wittaler [7]
4 years ago
11

173Lu has how many protons and neutrons

Chemistry
1 answer:
zheka24 [161]4 years ago
3 0

Answer:

71 protons

102 neutrons

Explanation:

Step 1: Find atomic number of Lu

Lu - Element number 71

So we know that Lu has 71 protons.

Step 2: Identify Lu - 173

173 is the atomic mass number, meaning the combined number of protons AND neutrons.

173 - 71 = 102 neutrons

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What volume of so2 is produced at 325 k and 1.35 atm when 15.0 grams of hcl reacts with excess k2so3?
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The volume of SO2 produced at 325k   is calculated as  below

calculate  the moles of SO2 produced  which  is calculated as follows

write the  reacting equation
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by  use of mole ratio between  HCl to  SO2  which is  2:1 the moles of SO2 is therefore = 0.411 /2 =0.206  moles  of SO2

use the idea  gas  equation  to calculate the volume SO2
that is V=nRT/P  
where  n=0.206  moles
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          P=1.35 atm

V=(0.206 moles x  0.082 L.atm/mol.k x325 k)/1.35 atm = 4.07 L of SO2

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