The one with 20 coils as it can generate more electricity.
Answer:
Number of moles = 3.73 mol
Explanation:
Given data:
Mass of LiCl = 158 g
Number of moles = ?
Solution:
Formula:
Number of moles = mass/ molar mass
Molar mass of LiCl = 42.4 g/mol
Number of moles = 158 g / 42.4 g/mol
Number of moles = 3.73 mol
Answer:
The presence of Br atom produces 2 ions (M and M+2) with the same abundance.
Explanation:
Mass spectrometry is an instrumental technique in which chemical substances are ionized and fragmented. The nature of the substances produce different fragmentations.
A way to know if a substance contains bromine is seeing the parent molecular ion (M, Subtance with ⁷⁹Br) and M+2 (Substance with ⁸¹Br) with the same relative abundance. Where parent molecular ion is the substance without fragmentations
<em>That is because in nature, the isotope abundance of bromine is ⁷⁹Br with 51% and ⁸¹Br with 49%, producing the 49% of ions having 2 units of m/z higher than its consecutive ion.</em>
Answer:
C:
Explanation:
Current flows from negative to positive.So the electrons will be moving left.
when a current is applied, positive charged copper ions (called cations) leave the anode (positive electrode) and move to the cathode (negative electrode).
Answer:
1. FeSO4+2NaOH→Na2SO4+Fe(OH)2
2. Fe(NO3)3+3NaOH→Fe(OH)3+3NaNO3
3. 382 g NaNO3
Explanation:
1. This is a double displacement reaction so perform exchanges with specimens and balance accordingly.
2. This is a double displacement reaction so perform exchanges with specimens and balance accordingly.
3. Start with 1.5 mol of Fe(NO3)3 then include mole to mole ratio of NaNO3 to Fe(NO3)3 then multiply by molar mass of Fe(NO3)3.
