Answer:
[KCl] = 1.2 M
Explanation:
We need to complete the reaction:
2KCl(aq) + Pb(NO₃)₂(aq) → 2KNO₃(aq) + PbCl₂(s)↓
By stoichiomety we know that 1 mol of chloride needs 1 mol of nitrate to react:
Let's find out the moles of nitrate, we have:
Molarity = mol/volume(L)
We convert the volume → 30 mL . 1L/1000mL = 0.030L
Molarity . volume(L) = moles → 0.400 M . 0.030L = 0.012 moles
Therefore, we can make a rule of three.
1 mol of nitrate reacts with 2 moles of chloride
Then, 0.012 moles of nitrate must react with (0.012 . 2) / 1 = 0.024 moles of KCl
We convert the volume from mL to L → 20 mL . 1L /1000mL = 0.020L
Molarity = mol /volume(L) → 0.024 mol /0.020L = 1.2 M
I think yes because the heat from the fire will transferred to the cannon ball and it will cause something with its energy to change effect.
Answer:
True!
Explanation:
Living things are classified by the characteristics they have in common. All living organisms are classified within the organization based on extremely fundamental, shared characteristics.
can be split into hydrogen and oxygen chemical property
is liquid at room temperature physical property
has a density of 1.0 g/cm³ physical property
reacts with certain metals chemical property
Explanation:
The physical properties of matter are the properties that occur when no change is occurring to a matter. They are usually observed with our senses or some simple laboratory experiments.
Some of the physical properties are boiling point, density, state of matter, e.t.c
The chemical properties are the properties that occurs when a matter undergoes some chemical changes.
For example rusting, decomposition, reactivity e.t.c
Learn more:
Chemical properties brainly.com/question/2376134
#learnwithBrainly
Extensive properties, such as mass and volume, depend on the amount of matter being measured.Intensive properties, such as density and color, do not depend on the amount of the substance present.Physical properties<span> can be measured without changing a substance's chemical identity.</span>
