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Anni [7]
3 years ago
10

Three isotopes of sulfur are sulfur-32, sulfur-33, and sulfur-34. write the complete symbol for each isotope, including the atom

ic number and the mass number.
Chemistry
2 answers:
Maurinko [17]3 years ago
8 0
Sulfur is an element in the periodic table that has a chemical symbol of S. This element is the 16th element in periodic table. This means that the atomic number or number of protons in the nucleus of the atom is equal to 16.

The number following the name of the element is the mass number. The following are the complete symbol that are arranged as follows:
 chemical symbol - atomic number - mass number

*Sulfur-32
         S - 16 - 32

*Sulfur-33
        S - 16 - 33

*Sulfur-34
        S - 16 - 34
Schach [20]3 years ago
4 0

<u>Answer:</u> The three isotopes of sulfur are _{16}^{32}\textrm{S},_{16}^{33}\textrm{S}\text{ and }_{16}^{34}\textrm{S}

<u>Explanation:</u>

Isotopes are defined as the substances which have same number of protons ( or Atomic number) but different number of neutrons (or Atomic mass). It is written in the form of _Z^A\textrm{X}

where,

Z is the atomic number

A is the atomic mass

X is the symbol of the element

Sulfur is the 16th element in the periodic table with atomic number 16.

For isotope 1: The atomic mass is 32

For isotope 2: The atomic mass is 33

For isotope 3: The atomic mass is 34

Therefore, the three isotopes of sulfur are _{16}^{32}\textrm{S},_{16}^{33}\textrm{S}\text{ and }_{16}^{34}\textrm{S}

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For the following questions, use a periodic table and your atomic calculations to find the unknown information about each isotop
mafiozo [28]

Answer:

Option B is correct.

4

Explanation:

We know that an atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example, if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

In given problem we are given with 2 neutrons of helium. We know that the atomic number of He is 2. Thus Mass number of He is,

Number of neutrons + number of proton

2 + 2 = 4

Thus, option B is correct.

7 0
3 years ago
Magnesium reacts with Oxygen gas forming Magnesium oxide as shown;
LuckyWell [14K]
Molar mass:

O2 = 16 x 2 = 32.0 g/mol              Mg = 24 g/mol

<span>2 Mg(s) + O2(g) --->2 MgO(s) 
</span>
2 x 24.0 g Mg -------------> 32 g O2
5.00 g Mg -----------------> ( mass of O2)

mass of O2 = 5.00 x 32 / 2 x 24.0

mass of O2 = 160 / 48

= 3.33 g of O2

hope this helps!
5 0
3 years ago
If 11.9 kJ are used to heat a sample of water the temperature increases from 20.0°C to
Kipish [7]

Answer:

m=4.51g

Explanation:

Hello!

In this case, since the energy involved during a heating process is shown below:

Q=mCp\Delta T

Whereas the specific heat of water is 4.184 J/(g°C), we can compute the heated mass of water by the addition of 11.9 kJ (11900 J) of heat as shown below:

m=\frac{Q}{Cp\Delta T}

Thus, by plugging in, we obtain:

m=\frac{11900J}{4.184\frac{J}{g\°C}(650\°C-20.0\°C)}\\\\m=4.51g

Best regards!

7 0
3 years ago
Two atoms are bonded through the unequal sharing of electrons What kind of bond exists between the atoms?
amm1812

Answer:

Covalent Bond

Explanation:

Because of the unequal sharing of electrons, a covalent bond exists.

7 0
3 years ago
Read 2 more answers
How many moles of KCl are in 2 L of 2.5 M KCl solution?
beks73 [17]
2.5LX2 M=5 moles

As Molarity X Volume= Total Number of Moles
3 0
3 years ago
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