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3 years ago

I need help..would it be A???

Chemistry

1 answer:

Dovator [93]3 years ago

7 0

Answer:

probably

Explanation:

Because fossil fuel is the main fuel source, so any fuels that are not fossil fuels are alternative.

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WHY IS IT IMPORTANT TO HAVE A LARGE SAMPLE SIZE IN ANY EXPERIMENT?

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3 years ago

Why are deposits of pure sodium metal or pure potassium metal not seen in nature

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3 years ago

The strength of an acid is affected by the polarity of the bond connected to the acidic hydrogen. The more highly polarized this

Shtirlitz [24]

Answer:

The answer is " $\bold{HClO_3 > HClO_2 >HClO > HBrO}$ "

Explanation:

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3 years ago

If the pressure on the surface of water in the liquid stato

Novosadov [1.4K]

The water will boil at C) 80°C

<h3>Further explanation</h3>

Given

Vapour pressure of water = 47 kPa

Required

Boiling point of water

Solution

We can use the Clausius-Clapeyron equation :

$\tt ln(\dfrac{P_1}{P_2})=\dfrac{-\Delta H_{vap}}{R}(\dfrac{1}{T_1}-\dfrac{1}{T_2})$

Vapour pressure of water at boiling point 100°C=101.325 kPa

ΔH vap for water at 100°C=40657 J/mol

R = 8.314 J/mol K

T₁=boiling point of water at 101.325 kPa = 100+273=373 K

Input given values :

$\tt ln\dfrac{101.325}{47}=\dfrac{-40657}{8.314}(\dfrac{1}{373}-\dfrac{1}{T_2})\\\\0.7682=4890.1852(\dfrac{1}{373}-\dfrac{1}{T_2})\\\\0.0001571=(\dfrac{1}{373}-\dfrac{1}{T_2})\\\\\dfrac{1}{T_2}=0.00283\rightarrow T_2=353~K=80^oC$

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3 years ago

What is the numbers of molecules for 65.8g of CO2?

baherus [9]

Answer:

One gram of carbon dioxide contains 13.6 x 10²¹ number of molecules.

Explanation:

4 0

2 years ago

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