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jeyben [28]
3 years ago
14

Sandra claims that invisible fairies live above the clouds where no one can see, hear or feel them. Which of the

Chemistry
1 answer:
jenyasd209 [6]3 years ago
3 0

Answer: D

Explanation: It's not scientific. branlist plz

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5 0
3 years ago
Using the atomic masses and relative abundance of the isotopes of nitrogen given below, determine the average atomic mass of nit
masha68 [24]

<span>To calculate the average mass of the element, we take the summation of the product of the isotope mass and the percent abundance. In this case, it is 0.9963 * 14.003 amu + 0.0037* 15.00 amu. This is equal to an average mass of 14.00668889 amu.</span>

8 0
3 years ago
If 10.0 liters of oxygen at STP are heated to 785.15 °K, what will be the new volume of gas if the pressure is also increased to
Ugo [173]

Answer: The new volume of gas is 28.5 L

Explanation:

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 1.00 atm (at STP)

P_2 = final pressure of gas = 102.6 kPa = 1.01 atm    (1 kPa= 0.0098 atm)

V_1 = initial volume of gas = 10.0 L

V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 273.15K  (STP)

T_2 = final temperature of gas = 785.15K

Now put all the given values in the above equation, we get:

\frac{1.00\times 10.0}{273.15}=\frac{1.01\times V_2}{785.15}

V_2=28.5L

The new volume of gas is 28.5 L

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4 years ago
Name 3 things that would be considered a compound.
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carbon dioxide, salt, copper

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Someone help me study 25 polyatomic ions
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You wanna do it over discord?
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