Answer:
See explanation
Explanation:
Anode;
Sn(s) ------> Sn^2+(aq) + 2e
Cathode;
Mn^2+(aq) + 2e ------> Mn(s)
The minimum voltage required to drive the reaction is the cell voltage. The cell voltage is obtained from;
E°cell= E°cathode - E°anode
E°cell= -1.19 - (-0.14)
E°cell= -1.05 V
Answer:
SrF2>SrO>RbF>CsBr
Explanation:
Ionic solids have their melting points dependent on:
i) size of the the ion: the smaller the size of the ion, the more closely packed the ionic sphere will be and the greater the melting point.
ii) Charge on the ion, the higher the charge on the ion the greater the electrostatic attraction between the ions and the greater the melting point.
In the arrangement above, the order of cation sizes are Sr2+<Rb+<Cs+
the order of anion sizes are F-<O2-<Br-
This explains the order of melting points given in the answer.
Answer:
Molecular formulas indicate how many atoms there are of each element in a compound, while empirical formulas indicate the reduced proportion of elements in a given compound. The molecular formula can be achieved through the empirical formula if the molecular weight of the compound is known, therefore the empirical formula alone cannot be used to obtain the molecular formula.
Explanation:
An empirical formula expresses the relative relationships of the different atoms in a given compound. For example, H2O is made up of two hydrogen atoms and 1 oxygen atom. In the same way, 1.0 mol of H2O is made up of 2.0 mol of hydrogen and 1.0 mol of oxygen. .
The molecular formula for a compound is always the empirical formula. The molecular formula can be obtained from the empirical formula if the molecular weight of the compound is known.
1.204 X 10 to the 24 power
Answer:
infared light.
Explanation:
Infared cameras are sensitive to wavelengths of light out side of our visible light spectrum. They are sensitive to wavelengths from about 1,000nm to 14,000 nm. Visible light ranges from about 400-700nm.