3 years ago

How many meters are equivalent to 50 feet?

Chemistry

2 answers:

Kitty [74]3 years ago

7 0

Take 50 ft / 3.28084 = 15.24 m (B)

Ipatiy [6.2K]3 years ago

4 0

The correct answer is B. 50 feet divided by 3.28084 feet (1 meter).

You might be interested in

Select the correct answer.

Elina [12.6K]

Answer:

Explanation:

Cu is the correct answer if I'm correct

4 0

2 years ago

What is an Atom?<br><br> What are the 5 most common elements that make up the human body?.

dalvyx [7]

An atom is the smallest unit of ordinary matter that forms a chemical element.

oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

6 0

3 years ago

For a process Arightwards harpoon over leftwards harpoonB, at 25 °C there is 10% of A at equilibrium while at 75 °C, there is 80

Lostsunrise [7]

This question is describing the following chemical reaction at equilibrium:

$A\rightleftharpoons B$

And provides the relative amounts of both A and B at 25 °C and 75 °C, this means the equilibrium expressions and equilibrium constants can be written as:

$K_1=\frac{90\%}{10\%}=9\\\\K_2=\frac{20\%}{80\%} =0.25$

Thus, by recalling the Van't Hoff's equation, we can write:

$ln(K_2/K_1)=-\frac{\Delta H}{R}(\frac{1}{T_2} -\frac{1}{T_1} )$

Hence, we solve for the enthalpy change as follows:

$\Delta H=\frac{-R*ln(K_2/K_1)}{(\frac{1}{T_2} -\frac{1}{T_1} ) }$

Finally, we plug in the numbers to obtain:

$\Delta H=\frac{-8.314\frac{J}{mol*K} *ln(0.25/9)}{[\frac{1}{(75+273.15)K} -\frac{1}{(25+273.15)K} ] } \\\\\\\Delta H=4,785.1\frac{J}{mol}$

Learn more:

5 0

3 years ago

Combustion of Methane Endothermic or Exothermic?

Misha Larkins [42]

Idk. Idk. Idk. Idk.

7 0

3 years ago

Calculate the heat energy released when 21.1 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point.

PSYCHO15rus [73]

Heat capacity yea urjjrjrjrbdnsnnend

3 0

3 years ago