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NeX [460]
4 years ago
5

What does selectively permeable mean?

Chemistry
1 answer:
riadik2000 [5.3K]4 years ago
7 0
It means that it allows some things to pass through it but now all. (Liquids and gases)
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2. What mass of NaOH is contained in 250.0 mL of a 0.400<br> M sodium hydroxide solution?
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Answer:Explanation:

250.ml of a 0.400 divide

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3 years ago
Define the term homeostasis
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The ability and tendency of certain systems to maintain a relatively constant internal state in spite of changes in external conditions; this ability is achieved by the presence of feedback mechanisms which can adjust the state of the system to compensate for changes in the state caused by the external environment. It is exemplified in homeothermal biological systems, such as animals which maintain relatively constant blood temperature and composition in spite of variations in external temperature or the composition of the food ingested.

Explanation:

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3 years ago
If Chris throws the baseball 60 meters in 4 seconds what is the average speed of the football
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4 0
3 years ago
If 498 mol of octane combusts, what volume of carbon dioxide is produced at 23.0 °c and 0.995 atm?
MAXImum [283]
Octane on combustion yields CO₂ and H₂O;

                         2C₈H₁₈<span>  +  2 5O</span>₂    →    16 CO₂<span>  +  18 H</span>₂<span>O
</span>
According to equation,

                      2 moles Octane produces  =  16 moles of CO₂ 
So,
              498 moles Octane will produce  =  X moles of CO₂

Solving for X,
                                     X  =  (498 mol × 16 mol) ÷ 2 mol

                                     X  =  3984 moles of CO₂

Now,
Calculating for Volume,
As,
                                    P V  =  n R T
Solving for V,
                                        V  =  n R T / P       ------- (1)

Pressure  =  P  =  0.995 atm 
<span>Volume  =  V  =  ? </span>
<span>Moles  =  n  =  3984 </span>
<span>Gas Constant  =  R  =  0.0821 L.atm.K</span>⁻¹.<span>mol</span>⁻¹<span> </span>
<span>Temperature  =  T  =  23 + 273 = 296 K
</span>
Putting values in eq. 1

                V  =  (3984 mol × 0.0821 L.atm.mol⁻¹.K⁻¹ × 296 K) ÷ 0.995 atm

                                      Volume  =  973040.95 L
5 0
3 years ago
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