true. is this what you were looking for?
Mol = mass/ molar mass
So look up the molar mass of nitrogen on your periodic table, which is 14
But REMEMBER it's asking for nitrogen gas which is N2
So, molar mass= 2*14= 28 g/mol
mol= (14g)/ (28 g/mol)= 0.5 mol
So now you got your number of moles
at STP mol= volume/ 22.4 dm^3
so (0.5)(22.4)= 11.2 dm^3 which is 11.2 L
yo, just memorize them mole formulas and you'll be good fam-- just make sure to pay attention to STP or SATP, and if they're asking for "gas" or just the atom!
Answer:
m = 7.39 g.
Explanation:
Hello!
In this case, since the molar mass of iron (III) phosphate is 150.82 g/mol based on its molecular formula (FePO₄), we can compute the mass in grams of 0.0490 moles of this compound by setting up the following dimensional analysis:
Best regards!
Answer:
Alpha particles, Beta particles, gamma rays, and neutrons
Explanation:
usually there's 2 ways radioactivity occurs: radioactive decay and ionization. radioactive decay breaks down the nucleas over time transforming the protons and neutrons into smaller particles alpha and beta with a little gamma radiation (gamma radiation is what was decaying). ionization is when the nucleas ejects neutrons as it's form of decay, leaving radioactive isotopes.
Answer:
three orbits
Explanation:
electronic configuration is 2,8,1
so there are 3 orbits