Answer:
3.89 g Mg
Explanation:
2M = 2 mol/L
120 mL = 0.120 L
2 mol/L *0.120 L = 0.240 mol H3PO4
3Mg + 2H3PO4 ----> Mg3(PO4)2 + 3H2
from reaction 3 mol 2 mol
given 0.240mol x mol
x = 0.240*2/3 = 0.16 mol Mg
M(Mg) = 24.3 g/mol
24.3 g/mol *0.16 mol = 3.89 g Mg
Explanation:
dye is a coloured substance that chemically bonds to the substrate to which it is being applied. This distinguishes dyes from pigments which do not chemically bind to the material they colour. The dye is generally applied in an aqueous solution, and may require a mordant to improve the fastness of the dye on the fiber.[2]
Answer:
Because the most reactive elements are<em> HALOGENS</em>.
The solution for this problem is:
Let x = speed of wind
Speed of plane with the wind = x + 100
Speed of plane against the wind = 100 -x
We will be using the formula for distance which is (Rate)(Time), getting the formula for time would be distance/rate Time to travel 600 miles with the wind = Time to travel 400 miles against the wind 600/(x + 100) = 400/(100 - x)
400(x + 100) = 600(100 - x)
400x + 40000 = 60000 - 600x
1000x = 20000
x = 20000/1000
x = 20 mph
