A element mixture (key word: mixture) due to the mixture containing 2 different types of elements it can be said that it’s highly likely that the mixture was not a compound but instead of a mixture due to mixture meaning more than 1 material. Hopes this help!
Answer: 448 mL of hydrogen gas.
Solution:
Now,according to reaction
1 mole of magnesium produces one mole of hydrogen gas.
Then 0.020 moles of magnesium will produce 0.020 moles of hydrogen gas.
Moles of 
gas : 0.020 mol
At STP, 1 mol of gas occupies 22.4 L
So volume of 0.020 mol of 
produced at STP :
= 22.4/times 0.020 = 0.448 L = 448 mL (1L=1000mL)
Answer:
a have stripped pattern
Explanation:
did it on edunuity and studied on quizlet
You have to think about the fact that hot air is constantly being blown up elevating the balloon once that air is taken away it's up to the steering and the wind after that. I know that probably doesn't help did you want to know the science part?
The angle made by electric field with the magnetic field in an electromagnetic wave is 90° or right angle.
<u>Explanation:</u>
The electrical & magnetic fields are at the 90 degree i.e at the right angles to the way the wave travels. The electric field oscillates back and forth in one plane while the magnetic field oscillates back and forth in a perpendicular plane;
the vibration, a transverse vibration, moves in a similar direction of each of the oscillating fields. All electromagnetic waves are created by accelerated charges, and the electromagnetic force follows the inverse-square law; the magnitude of the force declines as one above the squared source distance.
