Chemistry, 09.03.2020 03:06 sneakypanther19

Determine the volume of fluid in the graduated cylinder shown. 8.135 mL 8.15 mL 8.13 mL 8.23 mL

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Answer from: clgnwekgklqwejg8619

8.15 mL (for the cylinder shown in the picture attached to this answer)

Explanation:

The picture with the graduated cylinder is missing.

See attached the picture with a graduated cylinder showing a volume of fluid between 8 and 9 mL, which is good to explain you how to solve this kind of problems.

First, you must know that the lecture is read where the meniscus is, the curve, of the fluid is. Since the curve is upward, you must read the mark that coincides with the bottom of the meniscus.

Second, determine what the marks mean. Count: there are 9 lines between 8 and 9; that is 10 divisions. If 8 is the mark for 8 mL and 9 is the mark for 9 mL, then each line is [ 9ml - 8ml] / 10divisions = 1 mL / 10 = 0.1 mL

Thus, the meniscus is between the marks of 8.1mL and 8.2mL.

Third, approximate: you can appreciate that the mark is, approximately, in the midpoint between 8.1mL and 8.2mLm, then the measure is

(8.1 + 8.2)ml / 2 = 8.15mL ← answer
Determine the volume of fluid in the graduated cylinder shown. 8.135 mL 8.15 mL 8.13 mL 8.23 mL

Answer from: Quest

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is $1s^{2}2s^{2}2p^{6}3s^{1}$ and electronic configuration of phosphorous is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$ .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

$3na + p \rightarrow na_{3}p$

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

Electrons are transferred from atoms of to atoms of this transfer makes the sodium atoms and the

Answer from: Quest

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.

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