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Ivahew [28]
3 years ago
14

An atom has 13 protons, 14 neutrons, and 10 electrons. What element is this atom? How did you determine which element it was?

Chemistry
2 answers:
vitfil [10]3 years ago
4 0
The element is Aluminum. I determined the element by looking at the number of protons. Since the number of protons is the same as the atomic number, I looked on the periodic table and searched for the element with an atomic number of 13 which gave me my answer of aluminum.
natita [175]3 years ago
3 0
Explanation: may be the answer is aluminium.
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Write the formulas of the compounds formed by Pb4+ with the following anions: CN−, ClO3−, SO32−, HPO42−
givi [52]
Pb(CN)₄
Pb(ClO₃)₄
Pb(SO₃)₂
Pb(HPO₄)₂

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8 0
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Platinum is a shiny metal material. How is this matter classified
zhannawk [14.2K]

Answer:

Noble Metals are found as <u>pure metals</u> becuase they are nonreactive and don't conmbine with other elements to form compounds.

Explanation:

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I need help I don’t get it
kotykmax [81]

Answer:

82.24% percent

Explanation:

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8 0
4 years ago
In a mixture of He, Ne, and Kr the total pressure is 125 kPa. The partial
tatiyna

Answer:

Partial pressure of He = 73 kPa

Explanation:

Given:

Total pressure = 125 kPa

Partial  pressure of Ne = 31 kPa

Partial pressure of Kr = 21 kPa

Find:

Partial pressure of He

Computation:

Total pressure = Partial  pressure of Ne + Partial  pressure of Kr + Partial  pressure of He

125 kPa = 31 kPa + 21 kPa + Partial pressure of He

Partial pressure of He = 73 kPa

7 0
3 years ago
A sample of chlorine gas fills a vessel at a temperature of 37oC. The vessel has a volume of 3L and experiences a pressure of 3a
Iteru [2.4K]

Answer:

25.1 g is the mass of chlorine in the sample

Explanation:

P . V = n . R . T

We apply the Ideal Gases Law to solve the excersise.

We need to convert the T°C to T°K → 37°C + 273 = 310K

We replace data: 3 atm . 3L = n . 0.082 L.atm /mol.K . 310K

9 atm.L / (0.082 L.atm /mol.K . 310K) = n → 0.354 moles

We convert the moles to mass, to reach the answer

0.345 mol . 70.9g / 1mol = 25.1 g

7 0
4 years ago
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