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WITCHER [35]
3 years ago
11

Please answer this question ASAP

Chemistry
1 answer:
Nezavi [6.7K]3 years ago
4 0

Answer:

put a test tube over the opening, remove it and quickly put a lit splint near the mout or in the tube. if you hear a squeaky pop it is hydrogen.

Explanation:

hydrogen ignites in air.

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How much water would I need to add to 700 mL of a 2.7 M KCl solution to make a 1.0 M solution?
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1190\ \text{mL}

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M_1V_1=M_2V_2\\\Rightarrow V_2=\dfrac{M_1V_1}{M_2}\\\Rightarrow V_2=\dfrac{2.7\times 700}{1}\\\Rightarrow V_2=1890\ \text{mL}

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