Answer:
0.0199moles
Explanation:
The number of miles of a substance can be calculated using the formula:
Number of moles (n) = Mass (M) / Molar mass (MM)
In this question, the mass of Magnesium element (Mg) = 0.478 g while the atomic mass is 24
Therefore, number of moles of Magnesium is:
Moles = 0.478/24
Moles = 0.01992
Hence, 0.0199 moles of Magnesium are contained in 0.478 g of the element.
Answer:
The partial pressure of when the valve is opened is 328.6 Torr.
Explanation:
Initial pressure of the
Initial volume of the
After opening the valve :
Final pressure or partail pressure of the
Final volume of the
( Boyle's law)
The partial pressure of when the valve is opened is 328.6 Torr.
Answer:
The student
identifies various ways
in which substances
differ (e.g., mass, volume, shape, density,
texture, and reaction
to temperature and
light).
Explanation:
the fact that u would post ur whole test on here i see if u posting 3 but the whole test Girllllllllll
I'm not one hundred percent sure but wouldn't group selection be most harmful to the ecosystem because they cut down a group of trees all at once instead of one by one.