IWVC stands for the Interstate Wildlife Violator Compact is a United States interstate agreement to accommodate the complementary distribution of knowledge concerning fisherman netting, trapping, and catching crimes and provides for identification of postponement or annulment of hunting, fishing, and deceiving permissions and licenses in other portion states emerging from crimes.
PH is logarithmically related to the concentration of H+ ions. This will be the formula that will be used for this problem. We calculate as follows:
HCN = H+ + CN-
1.85 g HCN ( 1 mol / 27.02 ) ( 1 mol H+ / 1 mol HCN ) = 0.068 mol H+
Concentration = 0.068 / 3.50 = 0.02 M
pH = -log 0.02
pH = 1.71
Answer:
A: The amount of CaCO₃ decreases.
B: The amount of CaCO₃ increases.
Explanation:
To know how the system will proceed to reach equilibrium, we need to calculate the reaction quotient (Q) and compare it with the equilibrium constant (Kc).
Part A 15.0 g CaCO₃, 15.0 g CaO, and 4.25g CO₂
CaCO₃ and CaO are solids and they do not take part in Q nor Kc, so we will just calculate the concentration of CO₂.
Then,
Q = [CO₂] = 9.66 x 10⁻³
Q < Kc (0.0108), so the reaction will proceed to the right to achieve equilibrium, thus decreasing the amount of CaCO₃.
Part B 2.50 g CaCO₃, 25.0 g CaO, and 5.66g CO₂
Then,
Q = [CO₂] = 0.0129
Q > Kc, so the reaction will proceed to the left to achieve equilibrium, thus increasing the amount of CaCO₃.
Number of moles of cobalt can be calculated as given mass of the substance divided by the molar mass of the substance.
Here, given mass of the cobalt = 27.4 g
Molar mass of the cobalt = 58.9 g
Number of moles of a substance= \frac{Given mass of the substance}{Molar mass of the substance}
Number of moles of cobalt= \frac{Given mass of the cobalt}{Molar mass of the cobalt}
=\frac{27.4}{58.9}
=0.465 mol
So, number of moles of cobalt will be 0.465 mol
Answer:
4 protons, 5 neutrons, 2 electrons
Explanation:
If you look at the numbers beside Be²⁺, the number 9 is the relative atomic mass and the number 4 is the proton (atomic) number. The relative atomic mass is the sum of the number of protons and the number of neutrons.
Number of protons= proton number.
Hence, number of protons= 4
Number of protons + neutrons= 9
4 + number of neutrons= 9
number of neutrons
= 9 -4
= 5
In an atom, the number of protons and electrons are the same since atoms are electrically neutral. But in an ion, the number of electrons is not equal to the number of protons since the atom gains/ loses electrons to form an ion. A positive sign means that electrons are given away.
Thus, Be gives away 2 electrons to form Be²⁺.
Original number of electrons= 4
Number of electrons in Be²⁺
= 4 -2
= 2
In summary, the number of protons and neutrons in an ion is the same as that of the atom. However, the number of electrons is not the same.