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Rudiy27
4 years ago
7

1. Which one of the following is classified as a compound? a)H2(g) b)CO2(g) c) C12 (8) d) 12 (g)​

Chemistry
1 answer:
Evgen [1.6K]4 years ago
5 0

Answer:

CO2

Explanation:

CO2 stands for Carbon Dioxide

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4 years ago
Using the reaction mixture in Problem 1, a student found that it took 230 seconds for the color of the I2 to disappear.
MakcuM [25]
The reaction mixture of problem 1 includes <span>10mL of 4.0 M acetone = 10 mL 1.0 M HCl = 10 mL 0.0050 M I2 = 20 mL H2O. if this is true then the procedure is the following:

In order to find the total volume of reaction then you need to do like this: 
</span><span>V = 10 mL + 10 mL + 10 mL + 20 mL = 50 mL </span>
<span>[I2]o = (0.005 mol I2 / 1 L I2 solution) (10 mL I2 solution) / 50 mL = 0.001 M </span>
<span>To first order, the reaction rate is 0.001 M / 230 s = 4,3 e-6 M/s 
Then if you want to find the rate yoe need to use the following formula:
</span><span> k [CO(CH3)2]^a [I2]^b [HCl]^c 
</span>So: <span>4,3 e-6 = k (4 M * 10 mL / 50 mL)^a (1e-3 M)^b (1 M * 10 mL / 50 mL)^c 

</span>
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