Answer:
B is krypton
Explanation:
Atomic radius increases when going down a group so Helium is smallest and radon is biggest.
Answer:
10.3 g Li) / (6.9410 g Li/mol) x (1 mol Li3PO4 / 3 mol Li) / (0.750 mol/L Li3PO4) = 0.6595 L = 660. mL
Explanation:
Answer:
222.91g of KCl
Explanation:
First, we need to write a balanced equation for the reaction. This is illustrated below
2K + Cl2 —> 2KCl
Molar Mass of KCl = 74.55 g/mol
Mass of KCl from the balanced equation = 2 x 74.55 = 149.1g
Molar Mass of Cl2 = 2 x 35.45 = 70.9g.
From the equation,
70.9g Cl2 produced 149.1g of KCl.
Therefore, 106 g of Cl2 will produce = (106 x 149.1)/70.9 = 222.91g of KCl
Ur answe is c hope u get it correct ..
Answer:
Number of moles of KIO₃ = 4.0×10⁻⁵ mol
Explanation:
Given data:
Concentration of solution = 0.04 M
Volume of solution = 1 mL
Number of moles of KIO₃ = ?
Solution:
Molarity = concentration
Molarity = number of moles / volume in L
We will convert the volume into L.
1 mL×1 L /1000 mL
0.001 L
Now we will put the values in formula,
0.04 M = number of moles / 0.001 L
Number of moles = 0.04 M ×0.001 L
Number of moles = 4.0×10⁻⁵ mol
