How is the periodic table helpful in determining the types of bonds an element will form?

Chemistry

1 answer:

BigorU [14]3 years ago

6 0

1.)b
2.)true
3.)false
are the answer don't take me on my word

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The isotope lead-208 (208P)

USPshnik [31]

It is a stable isotope of lead metal. this isotope is of nonradioactive nature. The isotope occur naturally but can also be produced by fission reaction.

It appears as gray powder. With molecular weight of 207.9g/mol.

The boiling point is 1740° while the melting point is 327.4°

It is immediately available as typical and in custom packing of different grade of food, agriculture and pharmaceuticals.

it is used for biomedical and biological labelling. It is also used to measure pb (lead) level in blood by glycogen isotope dilution technique.

5 0

3 years ago

If helium effuses through a porous barrier in 1.34 min, how much time (in min) would it take the same amount of ammonia to effus

timofeeve [1]

Answer:

The time taken the same amount of ammonia to effuse through the same barrier under the same conditions is 2.76 minutes.

Explanation:

Let the volume of the helium gas be = V

Time taken by the helium gas = t = 1.34 min

Effusion rate of helium gas = $R=\frac{V}{1.34 min}$

If V volume of ammonia effuse through same porous barrier the effusion rate of ammonia gas will be given as:

$R'=\frac{V}{t'}$

Using Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

$\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}$