Answer:
15g
Explanation:
First, you need to correct the answer to the previous question. The percentage by mass of Mg in MgO =
Mg = 24.3 amu
O = 16.0 amu
The total mass of MgO = 40.3 amu
To calculate the percent composition of Mg:
% = 24.3/40.3 x 100
% = 60
To calculate the mass of Mg needed to make 25g of MgO:
x/25g = 60%/100%
100x = (25)(60)
100x = 1500
x = 15g
Answer : The volume required to fill the gas tank is, 45.42 liters
Explanation :
Conversion used for gallon to liters are:
As we are given the volume of gas tank in gallon is, 12.0 gal
Now we have to determine the volume of gas tank in liters.
As, 1 gallon = 3.785 liter
So, 12.0 gallon =
Therefore, the volume required to fill the gas tank is, 45.42 liters
When magnesium ion doesn't give any characteristics colour with the flame test as electronic transisitons do not give out visible light.
Answer:
The answer is B. H2SO4/Na2SO4
Explanation:
8mph North
Explanation:
Given parameters:
Start time = 9.00am
Final time = 10.00am
Displacement = 8miles north
Unknown:
Average velocity of the dog = ?
Solution:
Velocity is the change of displacement with time. It is expressed as:
Velocity =
The change in time from 9 - 10am is 1 hour:
Velocity = = 8mph
The velocity has both magnitude and direction and it is better written as 8mph due north.
Learn more:
Velocity brainly.com/question/2562700
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