<h3>
Answer:</h3>
D. Multiply the atomic mass of fluorine by 1.25
<h3>
Explanation:</h3>
<u>We are given;</u>
We need to identify the formula that shows the equivalent in mass
- We need to know the relationship between mass of an element, its atomic mass and the number of moles;
- That is; Number of moles = Mass of the element ÷ Atomic mass
Therefore;
Mass of the element = Number of moles × atomic mass
- Thus, in this case, to get mass we will multiply number of moles by atomic mass of Fluorine.
- That is, multiply atomic mass of fluorine by 1.25 moles .
Answer:
pH = 14 - pOH = 14 - 6.907 = 7.903
=> [H₃O⁺] = 10^-pH = 10^-7.903 = 1.25 x 10⁻⁸M
Explanation:
MOLECULE: Smallest particle of a substance that has the properties of that substance (usually a compound); also, a particle composed of two or more atoms united by chemical bonds. PHYSICAL CHANGE: Any change in matter that does not destroy the identity of a substance, nor change its characteristic chemical properties.
Answer:
in the excited state
Explanation:
Because in excited state an atom has more energy
Answer: 6.56g
Explanation:
No of moles = mass given/molar mass
Molar mass of ch4
C is carbon which is 12
H is hydrogen which is 1
Molar mass= 12+4(1)
Molar mass= 16g/moles
No of moles given is 0.41moles
No of moles = mass given/molar mass
Mass given = molar mass × no of moles
Mass given = 16×0.41
Mass= 6.56g