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3 years ago

Name the compound re2o5. use a roman numeral after the name of the cation

1 answer:

4 0

Answer is: name of the compound Re₂O₅ is rhenium(V) oxide.
In this chemical compound atom of rhenium has oxidation number +5 and atom oxygen has oxidation number -2, chemical compound rhenium(V)-oxide has neutral charge (2·(+5) + 5·(-2) = 0).
Roman five is for valence of rhenium in this compound.

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Three products of destructive distillation of coal <br>please answer quickly

muminat

Answer:

the three products of destructive distillation of coal are:-

1. coal gas

2. coke

3. ammonia liquor

7 0

3 years ago

Read 2 more answers

A solution was prepared by dissolving 2.2 g of an unknown solute in 16.7 g of CCl4. A thermal analysis was performed for this so

laila [671]

Answer:

Molar mass of unknown solute is 679 g/mol

Explanation:

Let us assume that the solute is a non-electrolyte.

For a solution with non-electrolyte solute remains dissolved in it -

Depression in freezing point of solution, $\Delta T_{f}=K_{f}.m$

where, m is molality of solute in solution and $K_{f}$ is cryogenoscopic constant of solvent.

Here $\Delta T_{f}=(-22.9^{0}\textrm{C})-(-28.7^{0}\textrm{C})=5.8^{0}\textrm{C}$

If molar mass of unknown solute is M g/mol then-

$m=\frac{\frac{2.2}{M}}{0.0167}mol/kg$

So, $5.8^{0}\textrm{C}=29.9^{0}\textrm{C}/(mol/kg)\times \frac{\frac{2.2g}{M}}{0.0167}mol/kg$

so, M = 679 g/mol

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3 years ago

How are fossils formed

creativ13 [48]

I am sure the answer is D

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4 years ago

What chemical compound is crucial to marine life and how is it disappearing?

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Nitrogen is crucial to the marine life and it is disappearing because it cannot be assimilated by most organisms in the water.

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3 years ago

An ideal gas sample is confined to 3.0 L and kept at 27 °C. If the temperature is raised to 77 °C and the initial pressure was 1

Nadusha1986 [10]

The gas is confined in 3.0 L container ( rigid container) ⇒ the volume remains constant when the temperature is increased from from 27oC to 77oC and therefore V1=V2 .

<h2>Hope it helps you please mark as brainlist</h2>

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3 years ago