What nuclide would be produced from the positron emission of Co-56

1 answer:

5 0

56Co + 0-1e → 56 27Fe [everything else in this answer will be random since I need at least 20 characters to answer] eyeyeyeyeyeyeyeyeyeyeyeyeyeyeyeyeyey

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The density of an object with a volume of 3.0 mL and a mass of 15.0 g is

Sav [38]

The density equals to the mass divided by volume. The equation of calculation is density= 15/3=5.0 g/ml. Notice the unit and the significant figures.

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3 years ago

Do compounds with different molecular formulas have different chemical properties

Ugo [173]

Saying I have two different compounds with different molecular formula. One is compound NaCl, the other one is compound H2O. They will have different chemical properties such as their melting and boiling point. Therefore the answer is Yes.

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2 years ago

Consider the reaction: 2HI(g) ⇄ H2(g) + I2(g). It is found that, when equilibrium is reached at a certain temperature, HI is 35.

Sliva [168]

Answer:

Kc = 0.075

Explanation:

The dissociation (α) is the initial quantity that ionized divided by the total dissolved. So, let's calling x the ionized quantity, and M the initial one:

α = x/M

x = M*α

x = 0.354M

For the stoichiometry of the reaction (2:1:1), the concentration of H₂ and I₂ must be half of the acid. So the equilibrium table must be:

2HI(g) ⇄ H₂(g) + I₂(g)

M 0 0 Initial

-0.354M +0.177M +0.177M Reacts

0.646M 0.177M 0.177M Equilibrium

The equilibrium constant Kc is the multiplication of the products' concentrations (elevated by their coefficients) divided by the multiplication of the reactants' concentrations (elevated by their coefficients):

$Kc = \frac{[H2]*[I2]}{[HI]^2}$