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4 years ago

What is the parent isotope when Cl-33 is formed during a beta decay?

Chemistry

1 answer:

zzz [600]4 years ago

7 0

Answer:

33/16 S

Explanation:

In beta decay, the atomic number of the daughter nucleus increases by one unit while the mass of the daughter nucleus remains the same as that of the parent nucleus.

Hence, if we know that a beta decay has occurred, then the parent nucleus must have the same mass as its daughter nucleus but have an atomic number that is less than that of the daughter nucleus by only one unit, hence the answer above.

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A chemist measures the amount of hydrogen gas produced during an experiment. She finds that 264. g of hydrogen gas is produced.

Lesechka [4]

Answer:

The answer is 130.953 g of hydrogen gas.

Explanation:

Hydrogen gas is formed by two atoms of hydrogen (H), so its molecular formula is H₂. We can calculate is molecular weight as the product of the molar mass of H (1.008 g/mol):

Molecular weight H₂= molar mass of H x 2= 1.008 g/mol x 2= 2.01568 g

Finally, we obtain the number of mol of H₂ there is in the produced gas mass (264 g) by using the molecular weight as follows:

mass= 264 g x 1 mol H₂/2.01568 g= 130.9731703 g

The final mass rounded to 3 significant digits is 130.973 g

4 0

3 years ago

Draw the line-angle formula for the most stable carbocation with a molecular formula of: You do not have to consider stereochemi

Yuki888 [10]

Answer:

Following are the answer to this question:

Explanation:

The most stable carbocation is: $C_9H^{+}_{11}$

The means of $C_9H^{+}_{11}$ is a hydrocarbon with $C_9H_{12}$ , which is needed to find the double bonds.

The formula for calculating the unsaturation hydrocarbons are:

Degree of the unsaturation

$= \frac{2C+2+N-X-H}{2}$

Where,

C=9, N=0, X=0, H=12

$\ Degree \ of \ the \ unsaturation= \frac{2\times 9+2+0-0-12}{2}$

$= \frac{20-12}{2}\\= \frac{8}{2}\\=4$

which means 3 double bonds and 1 ring.

The most stable carbocation is given in the attachment file. please find the attachment.

4 0

3 years ago

As the ball falls, its energy will decrease and its energy will increase

svlad2 [7]

Answer: As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy.

Explanation:

4 0

4 years ago

What is the name of a fluid with no viscosity

DochEvi [55]

Superfluidity is the characteristic property of a fluid with zero viscosity which therefore flows without loss of kinetic energy. An example of a superfluid would be liquid helium.

3 0

3 years ago

A 2.4 g sample of a mixture of calcium chloride, CaCl2, and sodium chloride, NaCl, is found to contain 0.12g Na. What percent of

NikAS [45]

12.7% NaCl

Hello, I believe this question is talking about the mass percentage of sodium chloride and we must use stoichiometry and then divide by the total mass of the mixture

This is what I did

0.12g Na x 1/22.99 x 1NaCl/Na x 58.44/1

This will result in 0.305 grams

When then divide this by 2.4

0.305/2.4 = 0.127, then multiply by 100

12.7%

4 0

2 years ago