Answer:
678 mL.
Explanation:
The balanced reaction between calcium chloride and silver nitrate is shown in figure.
As shown in the equation , each mole of aqueous calcium chloride will rect with two moles of silver nitrate.
The moles of calcium chloride taken = molarity X volume (L)
= 0.37X0.33 = 0.122 mol
the moles of silver nitrate required = 2 X 0.122 = 0.244 mol
the volume of silver chloride required =
M = 0.36 M
mol = 0.244
Putting values
volume = 0.678 L = 678 mL.
Salinity has units of grams NaCl or salt per kilogram solution. We can use the density given and the molar mass of the salt to convert from salinity to molarity. We do as follows:
( 5.6 g / kg ) ( 1.03 kg / L ) ( 1 mol / 58.44 g ) = 0.0987 mol NaCl / L
There are 24 protons in Chromium. You get the number of neutrons by subtracting the number of protons from the mass number which is the total number of protons and neutrons. Chromium's mass number is 52. You would subtract 24 from 52. 52-24=28. There are 28 neutrons in chromium.
Answer:
Hydrogen bond strengths range from 4 kJ to 50 kJ per mole of hydrogen bonds. In molecules containing N-H, O-H or F-H bonds, the large difference in electronegativity between the H atom and the N, O or F atom leads to a highly polar covalent bond (i.e., a bond dipole).
Explanation:
Answer:
First one: group
Second one: period
Third one: number of valence electrons
Last one: increases