All categories

3 years ago

What is the mass (g) of 7.32x10^15 atoms of (Sn)

Chemistry

2 answers:

Temka [501]3 years ago

8 0

Answer:

144.7×10^-8g of tin

Explanation:

Recall from Avogadro's law that the number of elementary entities (atoms, molecules, ions etc) in one mole of a substance is equal to the Avogadro's number which has a numerical equivalent of 6.02×10^23.

1 mole of tin has a mass of 119g

Hence 119g of tin has 6.02 ×10^23 atoms of tin

x g of tin will have 7.32x10^15 atoms of tin

x= 7.32x10^15 × 119/ 6.02 ×10^23

x= 144.7×10^-8g of tin

skelet666 [1.2K]3 years ago

3 0

Answer:

The mass of Sn in 7.32 *10^15 atoms is 1.43*10^-6 grams

Explanation:

1 mole = 6.02 *10^23 atoms (Avogadro's constant)

6.02 *10^23 atoms = 1 mole

7.32*10^15 atoms = (7.32*10^15 / 6.02 *10^23) moles of Sn

= 1.22 *10^-8 atoms of Sn.

The relationship between umber of moles and mass is thus;

n = m / mm; where m = mass, mm = molar or atomic weight, n = number of moles

m = n * mm

mm of Sn = 118g/mol

m = 1.22 *10^-8 * 118

m = 0.000001403 g

m = 1.43 *10^-6 g

The mass of Sn in 7.32 *10^15 atoms is 1.43*10^-6 grams

You might be interested in

One of the radioactive isotopes used in medical treatment or analysis is chromium-51. The half-life of chromium-51 is 28 days. H

Goryan [66]

Answer : The time required for decay is, 84 days.

Explanation :

Half-life of chromium-51 = 28 days

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{t_{1/2}}$

$k=\frac{0.693}{28\text{ days}}$

$k=0.0248\text{ days}^{-1}$

Now we have to calculate the time required for decay.

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = time taken by sample = ?

a = let initial activity of the sample = 100

a - x = amount left after decay process = 12.5

Now put all the given values in above equation, we get

$t=\frac{2.303}{0.0248}\log\frac{100}{12.5}$

$t=83.9\text{ days}\approx 84\text{ days}$

Therefore, the time required for decay is, 84 days.

7 0

4 years ago

b → p experiment number [a] (m) [b] (m) initial rate (m/s) 1 0.273 0.763 2.83 2 0.273 1.526 2.83 3 0.819 0.763 25.47 22) the rat

Mazyrski [523]

The rate law for this reaction is [A]².

Balanced chemical reaction used in this experiment: A + B → P

The reaction rate is the speed at which reactants are converted into products.

Comparing first and second experiment, there is no change in initial rate. The concentration of reactant B is increased by double. Initial rate does not depands on concentration of reactant B.

Comparing first and third experiment, initial rate is nine times greater, while concentration of reactant A is three times greater. Conclusion is that concentration of reactant A is squared and the rate is [A]².

More info about rate law: brainly.com/question/16981791

#SPJ4

8 0

1 year ago

A metal X from two oxide A and B .3.oogm of A and B contain 0.72 and 1.16g of oxygen respectively.calculate the maases of metal

devlian [24]

Answer:

Explanation:

Firstly, we have to determine the mass of metal X. We can do that by interpreting the first and second statement mathematically.

Metal X can form 2 oxides (A and B).

A + B = 3g

The mass of oxygen in A is 0.72g and the mass of oxygen in B is 1.16g.

The mass of metal X in the two oxides will be the same because it's the same metal.

Thus, we represent the mass of the metal in the two oxides as 2X.

2X + 0.72 + 1.16 = 3

2X + 1.88 = 3

2X = 3 - 1.88

2X = 1.12

X = 0.56

<u>Thus, 0.56 g of the metal combines with 0.72g of oxygen in A and 1.16 g of oxygen in B.</u>

Thus, mass of metal (X) in 1g of oxygen in A is

0.56g ⇒ 0.72g

X ⇒ 1

X = 1 × 0.56/0.72

X = 0.78 g

Hence, 0.78g of the metal will combine with 1g of oxygen for A

Also, mass of metal (X) in 1g of oxygen in B is

0.56g ⇒ 1.16g

X ⇒ 1g

X = 1×0.56/1.16

X = 0.48 g

Thus, 0.48g of the metal will combine with 1g of oxygen for B

6 0

3 years ago

Predict what will be observed in each experiment below. A student sees tiny bubbles clinging to the inside of an unopened plasti

Arisa [49]

Answer:

Explanation:

Squeezing the bottle creates negative pressure inside the bottle because of the plastic's elasticity that will hasten the extraction of the carbon dioxide from the soda.

6 0

3 years ago

Read 2 more answers

What is one example of boyles law

damaskus [11]

One of the examples of Boyles law in action is a syringe

3 0

4 years ago