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borishaifa [10]
3 years ago
7

Please Help! I just started balancing equations and my teacher gave me this. Thanks in advance! :D

Chemistry
2 answers:
Alenkasestr [34]3 years ago
8 0
So you need to put numbers before each compound to make sure there are the exact same number of elements on each side. If you put a 4 before NH4 there are 4 Nitrogen and now 16 hydrogen. I just played around with numbers and guessed until I got them even.
matrenka [14]3 years ago
5 0

Answer:

3. AlCl3 + 3 AgNO3 => Al( NO3) 3 + 3 AgCl

4. ( NH4)2 Cr2O7 => N2 + Cr2O3 + 4 H2O

5. Al2S3 + 6 NaHCO3 => 2 Al(OH)3 + 3 Na2SO2 + 6 CO

Explanation: Solution attached on the balanced equation.

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4 0
2 years ago
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Firdavs [7]

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The combined gas equation is,

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

where,

P_1 = initial pressure of gas = 231 kPa

P_2 = final pressure of gas = 168 kPa

V_1 = initial volume of gas = 3.25 L

V_2 = final volume of gas = 4.35 L

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

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