if an element has a mass number of 232 and an atomic number of 93, how many neutrons does the element have

Chemistry

2 answers:

alekssr [168]3 years ago

5 0

Neutrons= Mass number - atomic number

= 232- 93

damaskus [11]3 years ago

5 0

Explanation:

It is known that atomic mass is the sum of total number of protons and neutrons present in an element.

And, atomic number is the sum of total number of protons present in an atom.

As it is mentioned that the given element has atomic mass 232 and its atomic number is 93. So, number of neutrons present in it are calculated as follows.

Atomic mass = no. of protons + no. of neutrons

232 = 93 + no. of neutrons

no. of neutrons = 232 - 93

= 139

Thus, we can conclude that given element has 139 neutrons.

You might be interested in

Please Hurry this is already overdue

Troyanec [42]

Answer:

According to the chart, the period and string length are not the same. Regardless of string length. The chart says that "period = seconds 10"

Explanation:

So for example in Trial 1. The period equaled 8.7, so in turn you would times 8.7 by 10 and get 87. Which is not equal to the string length. For they are also measured in two different measurements.

7 0

3 years ago

Calculate the molar mass of a gaseous substance if 0.125 g of the gas occupies 93.3 mL at STP.

just olya [345]

Answer:

30.0g/mol

Explanation:

Step 1: Given data

Mass of the gas: 0.125 g

Pressure (P): 1 atm (standard pressure)

Temperature (T): 273.15 K (standard temperature)

Volume (V): 93.3 mL

Step 2: Calculate the moles of the gas

We will use the ideal gas equation.

$P \times V = n \times R \times T\\n = \frac{P \times V}{R \times T} = \frac{1atm \times 0.0933L}{\frac{0.0821atm.L}{mol.K} \times 273.15K} = 4.16 \times 10^{-3} mol$