<span>Answer is an </span>alpha emission<span>
Alpha decay is an emission of </span>₂⁴He <span>nucleus. If an
element undergoes an alpha decay, the mass of the daughter nucleus formed is reduced
by 4 compared
to mass of parent atom and atomic number is reduced by 2 compared to atomic number of parent
atom.
</span><span>Here parent atom is </span>Sm<span> which has
atomic number as 62 and mass number as 146. Since the emitted particle is a </span>₂⁴He<span> nucleus this is an alpha decay. Daughter atom will
have </span>146 - 4 = 142<span> <span>as mass number and </span></span>62 - 2 = 60<span> <span>as atomic number. Hence, daughter atom should
be </span></span>Nd<span> which has atomic number as 60.</span><span>
</span>
Answer:
128g
Explanation:
Simply multiply the number of moles by the molar mass of each substance (64 g/mol for SO2 and 32 g/mol for 02):
SO₂ → 2 moles × 64 g/mol =128g
O₂ → 1 mole x 32 g/mol =32g
Weathering because it’s just the answer
Oh we have just done this in biology recently... photolysis occurs where it splits apart water molecules to make electrons and hydrogen ions (the H+ is used to reduce NaDP later on) and also O₂ is made as a by product
basically this is the equation 2H₂O⇒4e⁻ + 4H⁺ where the electrons replace the lost ones in chlorophyll
hope this helped :)
Molarity is defined as the number of moles of solute in 1 L of solution
molarity of stock solution to be prepared - 100 x 10⁻³ mol/L
volume of stock solution to be prepared - 1.2 mL
Therefore number of moles in 1.2 mL - 100 x 10⁻³ mol/L x 1.2 x 10⁻³ L
number of moles of drug - 1.2 x 10⁻⁴ mol
mass of drug required - 1.2 x 10⁻⁴ mol x 181.6 g/mol = 21. 8 mg
21.8 g of drug is required to make the stock solution
