Answer:
2.02 times
Explanation:
According to<em> Graham's law</em>, the rate of effusion of two gases can be expresed as:
Where M are the atomic/molecular masses of the gases.
In this problem, the subscript 1 refers to O₂ gas (32 g/mol), and the subscript 2 refers to Xe gas (131.293 g/mol).
Putting the data in the equation gives us:
So O₂ effuses at a rate that is 2.02 times faster than the rate of Xe.
Answer: 6.3x10-² moles of H20
Explanation: Solution:
Convert first the mass of O2 to moles which is 1 mole of O2 over its molar mass. The molar mass of O2 is 32. Then after that check the stoichiometric factors of both O2 and H2O.
0.252gO2 x 1mole O2/ 32 g O2 x 4 mol H2O/ 5 moles O2.
Both g of O2 and moles of O2 will be canceled out so the remaining unit is mole of H2O.
1. The symbol for an isotope of lithium that has a mass of 6 and a charge of +1 is ⁶₃Li⁺
2. If the ratio of the neutron and proton in the nucleus of an atom increases, the nucleus becomes unstable.
3. Allie's hypothesis is correct because atoms B and C have the same atomic number but different neutron numbers, hence, they are isotopes.
4. Rana's hypothesis is wrong because the number of electrons is greater than the number of protons, hence atom C is a negative ion.
5. The symbols are wrong for the following reasons;
- MG is wrong because the symbol of atoms consists of first a capital letter, and then a small letter
- ca is wrong because the symbol of atoms consists of first a capital letter, and then a small letter
- nE is wrong because the symbol of atoms consists of first a capital letter, and then a small letter
<h3>What determines the charge on an atom of an element?</h3>
The charge on an atom of an element is determined by the number of protons and neutrons in the atom.
A neutral atom has an equal number of protons and electrons, a negative atom has more electro than protons, while a positive ion has more protons than electrons.
Isotopes of elements are atoms of the same element having the same number of protons but different numbers of neutrons.
Learn more about isotopes at: brainly.com/question/27198009
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Answer:
0.0258 mol <em>Answer</em><em> </em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>
Answer:4 significant figures
Explanation:
