Which mass of urea CO(NH2)2 contain the same mass of nitrogen as 101.1g of potassium nitrate?
1 answer:
M(KNO₃)=101.1 g/mol
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Answer:
atomic #= 1 protons equals one Number of neutrons equals to 0 number of electrons equal to 1 mass number equals to 1 2.
atomic number equals to 1 Protons equals to 1 number of neutrons equals to 0 number of electrons equals to 0 because the plus sign means that it loses an electron mass number equals to 1
3.
atomic number 17 number of protons 17 number of neutrons 18 number for electrons 18 Because negative sign means It's an anion which means it gains an electron mass number 35
4.
12 12 12 10 loses 2 its a cation 24
5.
47 47 108-47 = 61 46 loses 1 108
6.
16 16 32-16 =16 18 it gains 2 electrons 32
there u go
Answer:
1.5x 10^24
Explanation:
for every 1 mol there are 6.02 x 10^23 molecules
2.5 mol x 6.02 x 10^23
-----------------
1 mol
Elements were grouped on their properties and behaviors, so hydrogen resides with the alkali metals in group 1 (1A) because it has only 1 valence electron, like the metals in that group.
Cs -137 has a half life of about 30 years. If 60 years pass, there is two half lives passed so 1/2 * 1/2= 1/4. Take 1/4 and multiply it with the mass given:
Full moon I’m pretty sure... good luck!
