Answer: I think you have to subtract the distances
Explanation:
Answer:
75.9mL of 2.75M LiOH solution
Explanation:
Molarity is an unit of concentration defined as the ratio between moles and liters. And the molar mass of LiOH is 23.95g/mol. With this information, it is possible to know the volume of solution you should add to supply 5.0g, thus:
5.0g LiOH × (1mol / 23,95g) × (1L / 2.75mol) × (1000mL / 1L) = <em>75.9mL of 2.75M LiOH solution</em>
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I hope it helps!
Answer : C) separate the parts by their properties.
Explanation:
Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. Trail is a mixture of various substances which do not react chemically and thus the constituents retain their chemical properties. The substances can be separated by using physical properties.
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. The elements lose their individual chemical properties. The elements can not be separated using physical means.
<span>H and Li have a +1 charge. Cl and OH have a -1 charge. When written out it should look like this:
H(+1) + Cl(-1) + Li(+1) + OH(-1) --> H2O + Li(+1) + Cl(-1)
if you wanted the net ionic equation it would be:
H(+1) + OH(-1) --> H2O</span>
Answer:
To determine how many electrons fit in each energy level, use the formula:
2n²
N is equal to the number of energy levels. Using this formula, we can determine that there are:
- First energy level holds 2 electrons
- Second energy level holds 8 electrons
- Third energy level holds 18 electrons
- Fourth energy level holds 32 electrons
- And so on...
Keep in mind though, that for an atom's outermost shell, it can only contain 8 valence electrons due to the octet rule that states that an element only needs eight electrons in their outermost shell in order to be stable.
