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pishuonlain [190]
3 years ago
15

What is the total anion concentration (in meq/l) of a solution that contains 6.0 meq/lna+ , 11.0 meq/lca2+ , and 3.0 meq/lli+ ?

Chemistry
2 answers:
Oliga [24]3 years ago
7 0
<span>Answer: The total anion concentration = 6.0 + 2x12.0 + 3.0 = 33.0mEq/L</span>
Evgen [1.6K]3 years ago
7 0

We know that each equivalent of Na+ will be combined with one equivalent of anion concentration

Each equivalent of Ca+2 will combine with one equivalent of anion

each equivalent of Li+ will combine with one equivalent of anion

As we are given with 6.0 meq/lna+ , 11.0 meq/lca2+ , and 3.0 meq/lli+ ?

So for each  6.0 meq/l  Na+, the anion concentration will be 6.0 meq/l

So for each  11 meq/l Ca+2 , the anion concentration will be 11meq/l

So for each  3.0 meq/l Li+ , the anion concentration will be 3 meq/l

Thus total anion concentration = 6 + 11 + 3 = 20 meq/l

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In what type of reaction or process does heat flow into the system
SCORPION-xisa [38]

Answer:  The correct answer is:  " endothermic . "

______________________________________

<u>Note</u>:  Heat flows <u> into </u>  [heat <u> may be </u> absorbed within] an "<u>endothermic</u>" reaction or system

          To the contrary, heat flows <u> </u><u>out </u>  [heat  <u> may </u><em> </em>exit from or <u> may be </u> released from] an "<u>exothermic</u>" reaction or process.

<u>Hint</u>:  Think of the "prefixes" of:  "<u>endo</u>thermic"  and "<u>exo</u>thermic" :

_____________________________________

  1)  endo- = "within" (as in "endothermic" —heat tends to be absorbed/"within"/"released within"/released within"/into" ;

  2) exo-   = " outwards"/"exit" (as in "exothermic") —heat tends to '"exit"/leave/escape from/"be released out of/form".

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Hope this is helpful to you!

Best wishes to you in your academic pursuits

     —and within the "Brainly" community"!

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5 0
3 years ago
The element lead (Pb) consists of four naturally occurring isotopes with masses of 203.97302, 205.97444, 206.97587, n 207.97663
Zanzabum

Answer:

The atomic mass of lead is: 207.216 u

Explanation:

data                 Isotopes                     mass                      percent

                             1                      203.97302                      1.4

                             2                     205.974444                    24.1

                            3                      206.97587                       22.1

                            4                      207.97663                       52.4

atomic mass = (203.97302x 0.014) + (205.974444 x 0.241) +

                        (206.97587 x 0.221) + (207.97663 x 0.524)

atomic mass = 2.856 +49.639 + 45.742 + 108.979

atomic mass = 207.216 u

8 0
3 years ago
Air blows at the base of circulation cells from ________ pressure to ________ pressure
Nataly [62]

air blows at the base of circulation cells from high pressure to low pressure

3 0
3 years ago
Wally fluoride is an imaginary gaseous
mihalych1998 [28]

Answer:

\rho =1.96\frac{g}{L}

Explanation:

Hello there!

In this case, since this imaginary gas can be modelled as an ideal gas, we can write:

PV=nRT

Which can be written in terms of density and molar mass as shown below:

\frac{P}{RT} =\frac{n}{V} \\\\\frac{P}{RT} =\frac{m}{MM*V}\\\\\frac{P*MM}{RT} =\frac{m}{V}=\rho

Thus, by computing the pressure in atmospheres, the resulting density would be:

\rho = \frac{165/760 atm * 314.2 g/mol}{0.08206\frac{atm*L}{mol*K}*425K} \\\\\rho =1.96\frac{g}{L}

Best regards!

7 0
3 years ago
Given that the molar mass of NaCl is 58.44 g/mol, Solve for the molarity of a solution that contains 87.75 g of NaCl in 500 mL o
aliina [53]

Molarity is defined as the number of moles of solute per 1 L of solvent.

the mass of NaCl in the solution is 87.75 g

number of moles of NaCl is calculated by dividing mass present by molar mass

number of NaCl moles = 87.75 g / 58.44 g/mol = 1.502 mol

the number of NaCl moles in 500 mL is - 1.502 mol

therefore number of NaCl moles in 1000 mL is - 1.502 mol/ 500 mL x 1000 mL/L = 3.004 mol

molarity of NaCl is - 3.004 M

answer is D. 3.00 M

5 0
3 years ago
Read 2 more answers
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