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telo118 [61]
3 years ago
10

While elements and compounds can both be classified as pure substances because they have distinct properties and composition, __

________ cannot be decomposed further. A) compounds B) elements C) formulas D) molecules
Chemistry
2 answers:
Tresset [83]3 years ago
4 0
Elements as they are fundamental (one single hydrogen atom is still an element
makkiz [27]3 years ago
3 0
Elements or answer b
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A trial of this decomposition experiment, using different quantities of reactants than those listed in the question above produc
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Answer : The volume of O_2(g) produced at standard conditions of temperature and pressure is 0.2422 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of O_2 gas = (740-22.4) torr = 717.6 torr

P_2 = final pressure of O_2 gas at STP= 760 torr

V_1 = initial volume of O_2 gas = 280 mL

V_2 = final volume of O_2 gas at STP = ?

T_1 = initial temperature of O_2 gas = 25^oC=273+25=298K

T_2 = final temperature of O_2 gas = 0^oC=273+0=273K

Now put all the given values in the above equation, we get:

\frac{717.6torr\times 280mL}{298K}=\frac{760torr\times V_2}{273K}

V_2=242.2mL=0.2422L

Therefore, the volume of O_2(g) produced at standard conditions of temperature and pressure is 0.2422 L

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3 years ago
How do the densities of the two objects compare?
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Answer:

orbiting closer to the earth's surface.....im pretty sure abt it

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