Answer:
D. They have the same number of protons as electrons.
Explanation:
Protons are found in the nucleus of the atom and have a positive charge while electrons orbit around the nucleus and have a negative charge. Usually, in a neutral atom of an element, the number of protons is equal to the number of electrons. This is why the atom has no charge because the positive and negative charges cancel out. When an atom loses an electron its charge turns positive while when it gains an electron its charge turns negative.
Answer:
An action that must be brought in the venue that has jurisdiction over the situs or is otherwise designated by law.
Answer:
2nd option
Explanation:
Molarity is the number of moles of the solute (NaCl) in 1 litre of the solution (NaCl solution).
Given: concentration= 232g/ L
what we are trying to achieve is __mol/ L.
So in 1 litre, we have 232g of NaCl.
To convert mass to mole, we divide it by the Mr.
Given that the Mr is 58g/mol,
number of moles
= 232 ÷58
= 4
Thus, 1 litre has 4 moles of NaCl.
Therefore, the molarity is 4.0 mol/L.
Answer:
0.0821 atm.L/Kmol
Explanation:
At stp, the values temperature, pressure and volume is given below:
Pressure (P) = 1 atm
Temperature (T) = 273 K
Volume (V) = 22.4 L
At stp, 1 mole of a gas occupy 22.4L.
Number of mole (n) = 1 mole
Gas constant (R) =?
The ideal gas equation is given below:
PV = nRT.
With the above equation, the gas constant R can be obtained as follow:
1 atm x 22.4L = 1 mole x R x 273K
Divide both side by (1 mole x 273 K)
R = (1 atm x 22.4L) / (1 mole x 273 K)
R = 0.0821 atm.L/Kmol
Therefore, the gas constant is 0.0821 atm.L/Kmol
The central Xe atom in XeO3 has three bonding domains and one lone pair of electrons. Hence, the electron geometry is tetrahedral and molecular geometry is pyramidal.