3 years ago

Select all the correct images. Select the atomic models that belong to the same element.

Chemistry

1 answer:

Alex_Xolod [135]3 years ago

7 0

Answer:The 2nd and 3rd one.

Explanation:

It has the same number of protons but different amount of nuetrons.

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URGENTTTTT What is the correct formula when Al+3 combines with CrO4-2

PIT_PIT [208]

A and C are incorrect because they are not complete transfer of valence electrons. Ionic bonds best to form a neutral molecule

8 0

3 years ago

Suppose 215 g of NO3- flows into a swamp each day. What volume of CO2 would be produced each day at 17.0°C and 1.00 atm?

charle [14.2K]

Answer:

The answer is " $41.23 \ L\ N_2$ "

Explanation:

$2 NO_3^{-} + 10 e^{-} + 12 H^{+} \longrightarrow N_2 + 6 H_2O\\\\= \frac{( 215 \ g \ NO_3^{-})}{(62.0049 \frac{\ g NO_3^{-}}{mol})} \times \frac{(1 \ mol \ N_2}{ 2 \ mol \ NO_3^{-})}\\\\$

$=3.46746789 \times 0.5\\\\= 1.733 \ mol \ N_2 \\\\\to V = \frac{nRT}{P} \\\\= (1.733 \ mol) \times (0.08205746 \frac{L\ atm}{Kmol}) \times \frac{ (17 + 273) K}{(1.00 atm)}\\\\= 41.23$