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Verizon [17]
3 years ago
14

In an experiment conducted between oxygen and chlorine gas it was found that oxygen gas spread much faster than chlorine. What i

s the explanation for this observation?
Chemistry
1 answer:
soldier1979 [14.2K]3 years ago
4 0

Answer:

Because oxygen is lighter

Explanation:

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H ( hydrogen ) is the answer I believe.
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10. A 2.36-gram sample of NaHCO3 was completely decomposed in an
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Answer:

0.79 g

Explanation:

Let's introduce a strategy needed to solve any similar problem like this:

  • Apply the mass conservation law (assuming that this reaction goes 100 % to completion): the total mass of the reactants should be equal to the total mass of the products.

Based on the mass conservation law, we need to identify the reactants first. Our only reactant is sodium bicarbonate, so the total mass of the reactants is:

m_r=m_{NaHCO_3}=2.36 g

We have two products formed, sodium carbonate and carbonic acid. This implies that the total mass of the products is:

m_p=m_{Na_2CO_3}+m_{H_2CO_3}

Apply the law of mass conservation:

m_r=m_p

Substitute the given variables:

m_{NaHCO_3}=m_{Na_2CO_3}+m_{H_2CO_3}

Rearrange for the mass of carbonic acid:

m_{H_2CO_3}=m_{NaHCO_3}-m_{Na_2CO_3}=2.36 g - 1.57 g=0.79 g

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A student has two substances at a lab table. One substance is iron pyrite (fool's gold) and the other is real gold. After placin
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The answer is A) 1 mL 
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How much energy is used to heat 250 g of ice from –15°C to steam at 105°C? (Hint: 5 steps, all positive)
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Answer:

Explanation: Q1 = mc(ice) ΔT (ice warms)

Q2 = ms (ice melts)

Q3 = mc((water) ΔT (water warms)

Q4 = mr (water boils)

Q5 = mc(vapour)ΔT

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When uranium decays inside Earth, what does it produce?
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