Answer:
- <u>Tellurium (Te) and iodine (I) are two elements </u><em><u>next to each other that have decreasing atomic masses.</u></em>
Explanation:
The <em>atomic mass</em> of tellurium (Te) is 127.60 g/mol and the atomic mass of iodine (I) is 126.904 g/mol; so, in spite of iodine being to the right of tellurium in the periodic table (because the atomic number of iodine is bigger than the atomic number of tellurium), the atomic mass of iodine is less than the atomic mass of tellurium.
The elements are arranged in increasing order of atomic number in the periodic table.
The atomic number is equal to the number of protons and the mass number is the sum of the protons and neutrons.
The mass number, except for the mass defect, represents the atomic mass of a particular isotope. But the atomic mass of an element is the weighted average of the atomic masses of the different natural isotopes of the element.
Normally, as the atomic number increases, you find that the atomic mass increases, so most of the elements in the periodic table, which as said are arranged in icreasing atomic number order, match with increasing atomic masses. But the relative isotope abundaces of the elements can change that.
It is the case that the most common isotopes of tellurium have atomic masses 128 amu and 130 amu, whilst most common isotopes of iodine have an atomic mass 127 amu. As result, tellurium has an average atomic mass of 127.60 g/mol whilst iodine has an average atomic mass of 126.904 g/mol.
The green one cause its staying in the same position even when time is passing. - hope this helped have a great day
They resulted tasting unpleasant due to the opened bag and the oxegen that wasn't pass through.
Answer:
number of hydrates (H₂O ) = 6
Explanation:
Data Given:
moles of BaCl₂ = 0.0016
moles of H₂O = 0.0096
number of hydrates = ?
Solution:
As we have moles of BaCl₂ and H₂O water.
First find the simplest ratio of BaCl₂ and H₂O
Ratio BaCl₂ : H₂O
0.0016 : 0.0096
Now divide the ratio on smallest number to get simplest ratio
BaCl₂ : H₂O
0.0016 / 0.0016 : 0.0096 / 0.0016
1 : 6
So,
The ratio of BaCl₂ to water (H₂O) is 1 to 6. it means there are 6 water molecules are present.
The formula of hydrated Barium Chloride will be
BaCl₂. 6H₂O
So the number of hydrates will be 6
Answer:
9.59 atm
Explanation:
Use ideal gas law PV = n RT
V = 5.34 L n = 1.82 mole T = ( 69.58+ 273.15) = 342.73 K
R = .082057 L-Atm/(K - mole)
P = n RT / V = 9.59 Atm
