Answer:
There are 6 atoms of oxygen in 2Ca(NO3)2
Answer:
D
Explanation:
gas are well separated with no regular arrangement and spreaded all over. liquid are close together with no regular arrangement and slightly spreaded. solid are tightly packed, usually in a regular pattern and not spreaded at all.
The concentration of a solution refers to its macroscopic property, represents the amount of solute dissolved in a unit amount of solvent or of the solution, and can be expressed in a variety of ways such as qualitatively (dilute, concentrated) and quantitatively ( saturated, unsaturated.)
The mass of 0.699 mol of C₆H₁₂O₆ is 126 g.
Mass = 0.699 mol × (180.16 g/1 mol) = 126 g
The molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.
<u>Explanation:</u>
Molality is the measure of how much of amount of solute is dissolved in the solvent. So it is calculated as the ratio of moles of solute to the grams of solvent.
As in this case, the solute is NaCl and solvent is unknown. So the moles of solute is given as 1.34 moles and the mass of solvent is given as 2.47 kg.
Hence,
Thus, the molality is 0.54 M when 1.34 moles of NaCl is present in 2.47 kg of solvent.