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3 years ago

Name the gas liberated when ethanol react with sodium metal?

1 answer:

4 0

<span>When sodium reacts with ethanol, hydrogen gas liberates and leaves a colorless solution of Alkoxide

Reaction: 2CH</span>₃CH₂OH + 2Na → 2CH₃CH₂ONa + H₂

So, in short the answer of your particular question will be "Hydrogen Gas"

Hope this helps!!!

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Which solution when mixed with a drop ofbromthymol blue will cause the indicator to change from blue to yellow

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Answer: A

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Fe2O3+3H2O->2Fe(OH)3

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3 years ago

How many grams of NaCl are required to make 150.0 mL of a 5.000 m solution

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The grams of NaCl that are required to make 150.0 ml of a 5.000 M solution is 43.875 g

calculation

Step 1:calculate the number of moles

moles = molarity x volume in L

volume = 150 ml / 1000 = 0.15 L

= 0.15 L x 5.000 M = 0.75 moles

Step 2: calculate mass

mass = moles x molar mass

molar mass of NaCl = 23 + 35.5 = 58.5 mol /L

mass is therefore =0.75 moles x 58.5 mol /l =43.875 g

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2 years ago

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The Average Speed of the orbiting space shuttle is

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Explanation:

It is given that, the Average Speed of the orbiting space shuttle is 17500 miles/hour.

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1 mile = 1.609 km

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$17500\ \dfrac{\text{miles}}{\text{hour}}=17500\ \dfrac{\text{miles}}{\text{h}}\times \dfrac{1\ h}{3600\ s}\\\\=17500\times \dfrac{\text{miles}}{3600\ s}$

Now cancel the miles in numerator.

$17500\times \dfrac{\text{miles}}{3600\ s}=17500\times \dfrac{\text{miles}}{3600\ s}\times \dfrac{1.609\ km}{1\ \text{miles}}\\\\=17500\times \dfrac{1.609}{3600}\ km/s\\\\=7.82\ km/s$

So, 17500 miles/hour is equal to 7.82 km/s.

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2 years ago

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Answer:

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Explanation:

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