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2 years ago

In the celebrated equation e = mc2, the c2 is the _________.

1 answer:

5 0

Hello!

In the celebrated equation e = mc2, the c2 is the proportionality constant of energy and mass.

This famous equation was proposed by Albert Einstein in 1905, and implies that when there is a certain mass, there is a certain amount of Energy associated with it even is the mass is in a steady state. The proportionality constant c² is the speed of light squared.

Have a nice day!

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Answer fast my H.W is hard

Marina86 [1]

Answer: The molality of $MgF_2$ solution is 4.013 m

Explanation:

Molality is defined as the amount of solute expressed in the number of moles present per kilogram of solvent. The units of molarity are mol/kg.

The formula used to calculate molarity:

.....(1)

Given values:

Given mass of $MgF_2$ = 20.0 g

Molar mass of = 62.3 g/mol

Mass of solvent = 80.0 g

Putting values in equation 1, we get:

$\text{Molality of }MgF_2=\frac{20.0\times 1000}{62.3\times 80.0}\\\\\text{Molality of }MgF_2=4.013m$

Hence, the molality of $MgF_2$ solution is 4.013 m

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katrin2010 [14]

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katrin [286]

Answer:

.86

.48

Explanation:

19/25 x 4/4 = 86/100

86/100 = .86

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HEY DEAR..

The particles of light known as photon.

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Read 2 more answers

What is the molar ratio for the following equation after it has been properly balanced?

slava [35]

The answer
the molar ratio for the following equation
____C3H8 + ____O2 Imported Asset ____CO2 + ____ H2O

after it has been properly balanced:
__1_C3H8 + ____5O2 Imported Asset ____3CO2 + ____ 4H2O

proof:
number of C =3 (C3H8; 3CO2)
number of H =8 (C3H8 ; 4H2O)
number of O = 10(5x2) or (2x3+4) (5O2;4H2O)

the answer is
Reactants: C3H8 = 1, O2 = 8; Products: CO2 = 3 and H2O = 4

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2 years ago