<span>Carbon has different isotopes. What is different between an atom of 12C and an atom of 13C?
Question 7 options:
A.number of protons in the nucleus
B.number of electrons in the atom
C.number of protons and electrons in the atom This is correct.
D.number of neutrons in the nucleus</span>
You need 158.70 grams of Fe2O3 to produce 111 grams of Fe. This is calculated by using the molar masses and stoichiometric relationship of the two compounds.
Solution:
MM Fe = 55.845 g/mol
MM Fe2O3 = 159.69 g/mol
Fe: Fe2O3 = 2 mol:1 mol
11 g FE (1 mol Fe/55.845 g Fe) (1 mol Fe2O3/2 mol Fe) (159.69 g Fe2O3 / 1 mole Fe2O3) = 158.70 grams Fe2O3
Answer:
The answer would be A. the number of electrons in the outermost electron shell.
Explanation:
These are called valence electrons which are transferred, shared, and rearranged by creating covalent bonds producing new substances.
Hope this helped! :)
Answer:
The substance that remained on the filter paper is Al(OH).
Explanation:
- Filter paper is the substance that is used in laboratory to separate the solid objects. It doesn't filter aqueous and gaseous products.
- So in our experiment the product formed is aluminum hydroxide Al(OH) and sodium chloride (NaCl).
- Between two products, sodium chloride is in aqueous form as indicated in the question. So it wont remain in the filter paper.
- Hence aluminum hydroxide being only solid product remains on the filter paper.
The electronic configuration of thallium lll ion is 4F^14 5D^10 and it has a charge of +3.
Thallium is a chemical element with the chemical symbol TI. Its atomic number is 81 and the atomic mass is 204. The charge of +3 implies that, the element will give away three electrons during the course of chemical reaction in order to attain stability.
