Answer:
1160mg
Explanation:
Molarity = number of moles ÷ volume
According to the information in the question, molarity = 1.25 M, volume = 18.0 mL = 18/1000 = 0.018L
M = n/V
n = M × V
n = 1.25 × 0.018
n = 0.0225moles.
Using mole = mass/molar mass, to find the mass of lithium phosphide (Li3P)
Molar mass of Li3P = 6.9(3) + 31 = 51.7g/mol
mole = mass/molar mass
0.0225 = mass/51.7
mass = 1.16grams.
In milligrams (mg), mass of Li3P = 1.16 × 1000 = 1160mg
Answer:
The speed of the car is 75 km per hour
Explanation:
Speed is distance over time so 150 km divided by 2 hours is 75km per hour.
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Answer:
A= producers have the greatest amount of available energy
Answer:
C:
Explanation:
Current flows from negative to positive.So the electrons will be moving left.
when a current is applied, positive charged copper ions (called cations) leave the anode (positive electrode) and move to the cathode (negative electrode).
Answer:
20 protons.
Explanation:
20 protons = 20 + charges
18 electrons = 18- charges.
The difference = 20 - 18 = +2
The charge for this ion is plus 2
It is a calcium ion. The element is number 20 on the periodic table.
