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makvit [3.9K]
3 years ago
7

Barium has a density of 3.59 g/cm

Chemistry
1 answer:
sergejj [24]3 years ago
3 0
What's the question???


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A gas at 29.4 kPa is cooled from a temperature of 75°C to a temperature of 25°C at constant volume. What is the new pressure of
kirill115 [55]

<span>To solve this we assume that the gas inside the balloon is an ideal </span>gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant volume pressure and number of moles of the gas the ratio of T and P is equal to some constant. At another set of condition, the constant is still the same. Calculations are as follows:

 

T1/P1 = T2/P2

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7 0
3 years ago
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Calculate the average rate of decomposition of NH4NO2 by the reaction 2NH4O5(aq) --&gt; N2(g) H2O(g) at the following time inter
igor_vitrenko [27]

Answer:

r=-0.033\frac{M}{s}

Explanation:

Hello!

In this case, since the average rate of reaction is computed as a change given by:

r=\frac{\Delta [NH_4NO_2 ]}{\Delta t}

In such a way, given the concentrations at the specified times, we plug them in to obtain:

r=\frac{(1.48M-4.12M)}{(330s-250s)}\\\\r=-0.033\frac{M}{s}

Whose negative sign means the concentration decreased due to the decomposition.

Best regards!

6 0
2 years ago
What is the molecular weight of one mole of H2CO3? g/mole
eimsori [14]
The answer is 62.026 g/mole
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3 years ago
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Which of these is a chemical property of a substance? texture ductility reactivity conductivity
beks73 [17]

Reactivity is a chemical property of a substance. According to EPA regulations, it is normally unstable and readily

undergoes violent change without detonating. it can explode or violently react when exposed to water, when heated, or under STP.

8 0
2 years ago
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In order to properly measure the displacement, the object must be completely submerged, however in the diagram the wood is floating. So the measured displacement will only be a fraction of what it actually is.

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3 years ago
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