Answer:
147 g
Explanation:
<em>The number of moles of a substance is the ratio of the mass of the substance and the molar mass of that substance.</em> Mathematically,
mole = mass of substance/molar mass
In this case, Nick needs 3.5 moles of NaF, the molar mass of NaF is calculated as:
23 + 19 = 42 g/mol (Note: Na = 23, F = 19)
Hence,
mass of 3.5 mole NaF = mole x molar mass
= 3.5 x 42 = 147 g.
<em>Hence, Nick would need to measure out </em><em>147 g</em><em> NaF using a suitable weighing balance.</em>
Answer:
while atoms form together, they percentage their outermost electrons to create more sustainable strength states. This sharing bonds the atoms into an ionic shape or a molecule
Explanation:
i hope this help a little
Explanation:
When two or more substances mix together but they do not combine chemically with each other then it is known as a mixture.
For example, sand in water is a mixture.
Mixtures can be separated by physical processes like filtration, fraction distillation etc.
Also, when a substance is soluble in another liquid then the substance is known as solute whereas the liquid is known as solvent.
A solute is always present in less quantity as compared to the solvent in a solution.
For example, gelatin powder is dissolved in hot water. Here, gelatin is the solute and hot water is the solvent.
Therefore, we can conclude that the following statements are true.
- Mixtures can be broken apart by physical processes.
- Gelatin powder is dissolved in hot water.
A. Amount of sleep, since it depends on how much coffee she drinks
