C. Homogeneous mixtures These alloys are homogeneous mixtures because they have a uniform composition throughout.
Answer:
''hydroxide ions make sodium hydroxide solution alkaline'' is true.
Explanation:
In the first sentence, OH+ ions is incorrect. It has to be OH- ions.
In the last sentence, hydride ions(H-ions) is incorrect. It has to be hydrogen ions(H+ ions).
Answer:
The answer to your question is 0.036 M
Explanation:
Data
Molarity = ?
mass = 4.0 grams KOH
Volume = 2 L
Molecular mass KOH = 39 + 16 + 1 = 56 g
Formula
Process
1.- Calculate the moles of KOH using proportions
56 g of KOH ---------------- 1 mol
4 g of KOH ---------------- x
x = (4 x 1) / 56
x = 0.071 moles
2.- Substitute the values in the formula to find Molarity
3.- Simplification and result
Molarity = 0.036 M
9
To balance the equation, there must be an equal number of Xs and Ys on each side. Since on the left side there are 2 Ys, and on the right side there are 3, you must put a coefficient of 3 on the left and 2 on the right to get the least common multiple of 6. Since putting 2 as the coefficient on the product makes a total of 4 Xs on the right, you must have a coefficient of 4 on the X product.
Thus, 4 + 3 + 2 = 9.
Answer:
Option D is good to go!
Explanation: as per the reactivity series more reactive substances will react with the counterpart substance.The most reactive substance here is calcium while the least reactive is aluminium, the magnesium comes in between.As per their reactivity, these substances will react with oxygen.
Explanation: