Answer:
cooler air
Explanation:
Which variables are given?
0.24 moles of oxygen must be placed in a 3.00 L container to exert a pressure of 2.00 atm at 25.0°C.
The variables given are Pressure, volume and temperature.
Explanation:
Given:
P = 2 atm
V = 3 litres
T = 25 degrees or 298.15 K by using the formula 25 + 273.17 = K
R = 0.082057 L atm/ mole K
n (number of moles) = ?
The equation used is of Ideal Gas law:
PV = nRT
n =
Putting the values given for oxygen gas in the Ideal gas equation, we get
n =
= 0.24
Thus, from the calculation using Ideal Gas law it is found that 0.24 moles of oxygen must be placed in a container.
Ideal gas law equation is used as it tells the relation between temperature, pressure and volume of the gas.
Answer:
0.245 on Ed
Explanation:
heterozygous; homozygous
homozygous; heterozygous
homogeneous; heterogeneous
Answer:
homogeneous; heterogeneous
Explanation:
because It is the right answer
Magnesium sulfate is a compound made of three elements linked chemically. No, it is not true that magnesium sulfate has four sulfur atoms. Thus, the statement is false.
Magnesium sulfate has been a chemical compound that has a molecular formula of MgSO₄ and has been constituted of magnesium, sulfur, and oxygen atoms. It is used for medicinal purposes and as laxatives.
From the molecular formula of magnesium sulfate, it can be said that there are one atom of magnesium, one atom of sulfur, and four atoms of oxygen element. There will be four sulfur atoms only if there are 4 molecules of magnesium sulfate.
Therefore, the statement is false as there is one sulfur atom and four oxygen atoms in the magnesium sulfate compound.
Learn more about magnesium sulfate, here:
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Answer : The mass of 12.3 moles of helium (He) is, 49.2 grams.
Solution : Given,
Moles of helium = 12.3 moles
Molar mass of helium = 4 g/mole
Formula used :
Therefore, the mass of 12.3 moles of helium (He) is, 49.2 grams.
Answer:
C. 49.2 g He
Explanation:
I got it right