Adding hot cocoa to hot water would be a chemical change
Answer:
Salt is the pure substance out of them all.
Explanation:
1 literThe total of water is equal to 1000.0 g of water
we need to find the molality of a solution containing 10.0 g of dissolved in Na₂S0₄1000.0 g of water
1. For that find the molar mass
Na: 2 x 22.99= 45.98
S: 32.07
O: 4 x 16= 64
The total molar mass is 142.05
We have to find the number of moles, y
To find the number of moles divide 10.0g by 142.05 g/mol.
So the number of moles is 0.0704 moles.
For the molarity, you need the number of moles divided by the volume. So, 0.0704 mol/1 L.
The molarity would end up being 0.0704 M
The molality of a solution containing 10.0 g of Na2SO4 dissolved in 1000.0 g of water is 0.0704 Mliter
Answer:
Explanation:
Acids will turn blue litmus paper red. True
Acids taste bitter. False
Bases taste sour. False
A.
True
Bases feel slippery True
Adding a base makes an acid less acidic.
True
Bases will turn litmus paper red. False
Ammonia is a base. True
Acids are corrosive. True
Acids contain hydrogen. True
Is pH=11 an acid, a base, or neutral? base
Is pH=3 an acid, a base, or neutral? acid
Is pH=14 an acid, a base, or neutral base
Is pH=2 an acid, a base, or neutral? acid
Is pH=7 an acid, a base, or neutral? neutral
