Answer:
1.06 M
Explanation:
Lets answer this question using the definition for molarity of a solution, M.
M = mol of solute/ Volume of solution in L
We are adding more moles of NaOH to a solution which is already 2.40, so the final number of moles are
25 g x 1 mol / 40 g/mol = 0.625 mol
mol NaOH in 1.5 L of 2.40 M NaOH:
1.5 L x 2.40 mol/L = 3.6 mol
Total # mol = 0.625 mol + 3.6 mol = 4.23 mol
The final volume is 4.00 L so the new molarity is:
M = 4.23 mol / 4 L = 1.06 M
Answer:
Electron pair geometry - tetrahedral
molecular geometry- trigonal pyramidal
Explanation:
According to Valence Shell Electron Pair Repulsion Theory, the shape of a molecule is determined by the number of electron pairs around the central atom in the molecule. Lone pairs distort a molecule away from its expected geometry based on VSEPR. This is why the electron pair geometry differs from the actual molecular geometry.
PCl3 has four regions of electron density, three substituents and one lone pair hence its electron pair geometry is tetrahedral. However, the three substituents are arranged in a trigonal pyramidal geometry(its molecular geometry).
Answer:
Enzymes are required to slow down biological reactions within cells,
this could be not sure
The answer of this question is Oxygen