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Lesechka [4]
3 years ago
8

From the combinations of substances listed below, which would most likely be miscible in

Chemistry
1 answer:
polet [3.4K]3 years ago
4 0

Answer:

C

Explanation:

polar has unequal sharing of electrons that has the lone pairs which has the electronegativity difference. can be mixed with water.

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What is the sum of 334.540 g and 198.9916 g to the correct significant figure?
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The answer to the question is a
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3 years ago
Help please and thank youu
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Answer:

elementos original

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8 0
3 years ago
How many moles of Hg will be produced from 39.0 of HgO?
den301095 [7]
<h3><u>Answer;</u></h3>

0.180 moles of HgO

<h3><u>Explanation;</u></h3>

The atomic weight of mercury is 200.5  

The atomic weight of oxygen is 16.0  

Therefore; the molecular weight (per mole) of mercury oxide is 216.5 g

Hence;

Number of moles  = 39 g/(216.5 g/mole)

                              = 0.180 moles of HgO.

7 0
4 years ago
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When hydrogen is burned as a fuel, the primary waste product produced is ________?
lora16 [44]
2H2 +O2 ----> H2O
The primary product is water.
3 0
3 years ago
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Water gas, mixturee of H2 and CO, is an important industrial fuel produced by the reaction of steam with red hot cake, essential
castortr0y [4]

Answer:

\boxed{\text{131.3 kJ/mol}}

Explanation:

The formula for calculating the enthalpy change of a reaction by using the enthalpies of formation of reactants and products is

\Delta_{\text{r}}H^{\circ} = \sum \Delta_{\text{f}} H^{\circ} (\text{products}) - \sum\Delta_{\text{f}}H^{\circ} (\text{reactants})

                          C(s) + H₂O(g) ⇌ CO(g) + H₂(g)

ΔH°f/kJ·mol⁻¹:      0      -241.8      -110.5        0

\begin{array}{rcl}\Delta_{\text{r}}H^{\circ} & = & -110.5 - (-241.8)\\& = & -110.5 + 241.8\\& = & \textbf{131.3 kJ/mol}\\\end{array}\\\text{The enthalpy of reaction is }\boxed{\textbf{131.3 kJ/mol}}

8 0
3 years ago
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