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atroni [7]
3 years ago
11

Which is a property of barium (Ba)?

Chemistry
1 answer:
pogonyaev3 years ago
6 0

Answer:

a it rarely reach with other elements

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faltersainse [42]

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Stopwatches versus clocks. To improve reliability repeat the experiment multiple times according to an identical procedure. Record these steps so the experiment can be repeated at any time

Explanation:

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2. During asexual reproduction in paramecia, a single paramecium becomes two new
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ion no

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A chemist measures the energy change ΔH during the following reaction: C3H8 (g) +5O2 (g) →3CO2 (g) +4H2O (l) =ΔH−2220.kJ Use the
statuscvo [17]

Answer:

The reaction is exothermic.

Yes, released.

The heat released is 4,08x10³ kJ.

Explanation:

For the reaction:

C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(l)

The ΔH is -2220 kJ, As ΔH is <0, <em>The reaction is exothermic.</em>

As the reaction is exothermic, the heat of the reaction will be <em>released.</em>

The heat released in 81,0g is:

81,0g C₃H₈×\frac{1mol}{44,1g}×\frac{2220kJ}{1mol}= <em>4,08x10³ kJ</em>

<em>-Using molar mass of C₃H₈ to convert mass to moles and knowing that there are released 2220 kJ per mole of C₃H₈-</em>

I hope it helps!

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3 years ago
How many moles of methane are produced when 4.53 mol co2 reacts
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6 0
2 years ago
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In your own words, describe two conditions that are necessary for an eclipse to occur
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3 years ago
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