From the periodic table:
mass of lithium = 6.941 grams
number of moles = mass / molar mass
number of moles of Li = 0.284 / 6.941 = 0.0409 moles
Molarity can be calculated using the following rule:
molarity = number of moles of solute / liters of solution
volume (in liters) = number of moles of solute / molarity
volume = 0.0409 / 0.362 = 0.1129 liters
Answer:
12.11.
Explanation:
∵ pOH = - log[OH⁻]
<em>∴ pOH</em> = - log(1.3 x 10⁻²) = <em>1.886.</em>
∵ pH + pOH = 14.
<em>∴ pH = 14 - pOH</em> = 14 - 1.886 = <em>12.11.</em>
Answer:
true
Explanation:
any object that is larger will take a longer time to do things, the same applies to heat levels. The lower the heat, the longer it takes, the higher the heat, the shorter it takes. So if an iceberg is large, it will need a higher heat, whereas an ice cube is really small and doesn't need that much heat to melt.
<span>B. energy
hope it helps
</span>
