Based on the given conditions, the gravitational force acted on the body is greater than the force upward by a quantity equal to 500 N. Therefore, the net force will cancel out and will remain an amount of 500N downward relative to the gravitational force exerted by the object.
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.
Ca.
Hydrogen and Carbon combined
Zn = zinc which is a metal, not a carbon atom
Cl=chlorine, just not a carbon atom
Sn isn’t a carbon atom.
I Am positive that it is Ca because Ca means carbon
Answer:
15000
Explanation:
1000 Meters in a kilo meter. So multiply 15 by a 1000.
Answer:
The total number of moles of gas in the mixture is 0.16939.
1.25550 grams of methane gas and 3.18848 grams of oxygen gas.
Explanation:
Total volume of the mixture = V = 10.5 L
Temperature of the mixture = T = 35°C = 308.15K
Pressure of the mixture = P
Total moles of mixture = n =
Using an ideal gas equation :
Partial pressure of the methane= 
Moles of the methane= 
Partial pressure of the oxygen gas= 
Moles of the methane= 
Mole fraction of the methane= 
Mole fraction of the oxygen gas= 
(Dalton's law)
Mass of 0.06975 moles of methane gas :
0.06975 mol × 18 g/mol =1.25550 g
(Dalton's law)
Mass of 0.06975 moles of oxygen gas :
0.09964 mol × 32 g/mol =3.18848 g
Total moles of mixture = n =
[/tex]=0.06975 mol+0.09964 mol=0.16939 mol[/tex]
