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Kamila [148]
3 years ago
5

Two words that describes the tone of "I know why the caged bird sings" and why

Chemistry
2 answers:
Mariulka [41]3 years ago
3 0
Somber , knowledgeable 
blsea [12.9K]3 years ago
3 0
Um? why is chemistry using songs? I would ask your teacher for help hun
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Plz help me... my ppr is gonig on......
anyanavicka [17]

Answer:

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Explanation:

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3 years ago
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How many ionizable groups are in the following peptide?
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Its b)5 ik this right
8 0
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What will the change in temperature be when 90 J are applied to 15 g of gold. (Cgold = 0.126 J/gºC)
luda_lava [24]

Answer:

48 °C

Explanation:

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m = 15 g

C = 0.126 J/gºC

q = mct

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The chemical symbol for the element calcium is Ca. What would be the symbol representing calcium atoms that
bixtya [17]

Answer:

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7 0
2 years ago
How many moles of N2 are in a flask with a volume of 0.5 L at a pressure of 400.0 kPa and a temperature of 300.0 K?
mylen [45]

Answer:

0.08moles

Explanation:

Given parameters:

Volume of gas  = 0.5L

Pressure of gas  = 400kPa

Temperature of gas  = 300K

Unknown:

Number of moles of N₂ = ?

Solution:

Applying the ideal gas law which is a combination of the three gas law: Boyle's law, Charles's law and Avogadro's law will solve this problem.

The ideal gas law is stated as;

              PV  = nRT

P is the pressure of the gas

V is the volume of the gas

n is the number of moles

R is the gas constant

T is the temperature of the gas

  We need to convert kPa of the pressure to atm which is a more comfortable unit to work with.

      400kPa will be \frac{400}{101.325}   = 3.95atm

Input the variables in the equation;

             3.95 x 0.5  = n x 0.082 x 300

                            n  = 0.08moles

5 0
3 years ago
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