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Kitty [74]
4 years ago
9

When finding the density of a solid, which situation prevents us from being

Chemistry
1 answer:
Allisa [31]4 years ago
3 0

Answer:

a) if the solid floats

Explanation:

Hello,

In this case, since the determination of the volume of a solid when submerged in water requires to use an analytical balance to measure the mass, but also it is necessary that the solid sinks in order to completely displace the what in the graduated cylinder which accurately provides the volume of the solid via its scale. Therefore, a draw back is a) if the solid floats since the water is not completely displaced.

Best regards.

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The specific heats and densities of several materials are given below:
krek1111 [17]

<u>Answer:</u> The change in temperature is 84.7°C

<u>Explanation:</u>

To calculate the change in temperature, we use the equation:

q=mc\Delta T

where,

q = heat absorbed = 1 kCal = 1000 Cal    (Conversion factor: 1 kCal = 1000 Cal)

m = mass of steel = 100 g

c = specific heat capacity of steel = 0.118 Cal/g.°C

\Delta T = change in temperature = ?

Putting values in above equation, we get:

1000Cal=100g\times 0.118Cal/g.^oC\times \Delta T\\\\\Delta T=\frac{1000}{100\times 0.118}=84.7^oC

Hence, the change in temperature is 84.7°C

6 0
3 years ago
How many grams of Cl2 must react to produce 0.0923 mol of AlCl3? Show work.
alexandr402 [8]

First, let's state the chemical reaction:

2Al+3Cl_2\to2AlCl_3\text{.}

We can find the number of moles of Cl2 required to produce 0.0923 moles of AlCl3, doing a rule of three: 3 moles of Cl2 reacted produces 2 moles of AlCl3:

\begin{gathered} 3molesCl_2\to2molesAlCl_3 \\ \text{?moles Cl}_2\to0.0923\text{ moles }AlCl_3\text{.} \end{gathered}

The calculation would be:

0.0923molesAlCl_3\cdot\frac{3molesCl_2}{2molesAlCl_3}=0.138molesCl_2.

And the final step is to convert this number of moles to grams. Remember that the molar mass can be calculated using the periodic table, so the molar mass of Cl2 is 70.8 g/mol, and the conversion is:

0.138molesCl_2\cdot\frac{70.8gCl_2}{1molCl_2}=9.770gCl_2.

The answer is that we need 9.770 grams of Cl2 to produce 0.0923 moles of AlCl3.

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Converting moles in chemistry how do I do that
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What do you need to convert them to? Moles to mass?
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Answer:

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Explanation:

hope I helped!

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<span>a long high sea wave caused by an earthquake, submarine landslide, or other disturbance, is the definition.  </span>
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