4 moles as their raport is 4/2 or 2/1
Answer:
Mendeleev left spaces in his periodic table because he predicted there were elements that weren't discovered yet that would fit in these spaces.
Explanation:
Answer:
number of valence electrons
Explanation:
All of the elements in group 17, also known as group 7A, have 7 valence electrons.
No two elements have the same atomic number nor atomic mass in elemental form.
Halogens may have any number of isotopes.
Answer:
V = 1.66mL acetic acid
Explanation:
dilution formula:
V1*C1 =V2*C2
⇒ V1*(6M) = (100mL)*(0.1M)
⇒ V1 =( (100mL) * (0.1M) ) / (6M)
⇒ V1 = 1.66mL acetic acid
Answer:
~0.14
Explanation:
There are roughly ~0.14 moles in 4.5g of Sulfur. 1 mol = 32.06 g of Sulfur, so we just find the ratio and then multiply.
