May 2024
Calculate [OH-1] in a solution with pOH=4.76.
2.1*10-5.
What occurs when oil is placed in water?
they do not mix.
You have 35.9g AlCl3. How many Grams of Cl2 do you need? BCE: 2Al(s) + 3Cl2(g) ---> 2AlCl3(s)
Do step 1: Identify 3 things you know (A-C).
A: 35.9g AlCl3
B: #g Cl2 = ?
C: MR = 2mol Al: 3mol Cl2: 2mol AlCl3
What symbols represent the partial charges at the ends of polar molecules?
𝛿− and 𝛿+
Define matter.
Anything that takes up space and has mass.
How does higher [CO2] cause lower pH?
Higher [CO2]= higher [H+1], higher [H+1]= lower pH.
Is vitamin C classified as an acid or a base?
An acid.
You have 35.9g AlCl3. How many Grams of Cl2 do you need? BCE: 2Al(s) + 3Cl2(g) ---> 2AlCl3(s)
Do step 2: find starting and ending 'towns' (A and B), 'streets' you go down (C), and # fractions needed (D).
A: massfield
B: massfield
C: molar mass Dr, molar mass way
D: 4
write the BCE for HCl (aq) + Pb(NO3)2 (aq) --->
2HNO3 (aq) + PbCl (s)
define mass.
The amount of matter the object contains.
What does pOH=?
pOH= -log[OH-1]
What is the equation used to find the Molarity (M)?
amount of solute (mol)/volume of solution (L)
You have 35.9g AlCl3. How many Grams of Cl2 do you need? BCE: 2Al(s) + 3Cl2(g) ---> 2AlCl3(s)
Do step 3: calculate molar mass of either substance A and/or B.
A: 133.33 g/mol
B: 70.90 g/mol
what is the solubility of most chloride salts?
soluble (Sol)
what is a physical property?
a property that can be measured or observed without changing the identity of matter.
How much CO2 is the ocean responsible for absorbing?
More than 1/3 (33.3%).
What are the BLA, BLB, CA, and CB of the equation HCl (aq) + OH- (aq) ⇌ H2Cl (aq) + O-2 (aq)?
HCl (aq) + OH- (aq) ⇌ H2Cl (aq) + O-2 (aq)
BLB BLA CA CB
You have 35.9g AlCl3. How many Grams of Cl2 do you need? BCE: 2Al(s) + 3Cl2(g) ---> 2AlCl3(s)
Do step 4: write the fractions using the roadmap.
(35.9g AlCl3/1)(1mol AlCl3/133.33g AlCl3)(3mol Cl2/2mol AlCl3)(70.90g Cl2/1 mol Cl2)
what is the solubility of most hydroxide (OH-1) Salts?
ISSol
define physical change.
when a change occurs without a change in a substance's chemical composition at a molecular scale.
In the chemical reaction CH4(g) + H2S(g) = CS2(g) + 4H2(g), when [CH4] increases, which direction does the equilibrium shift to?
Right.
If litmus paper turns red in a solution, is that solution an acid or a base?
Acid.
You have 35.9g AlCl3. How many Grams of Cl2 do you need? BCE: 2Al(s) + 3Cl2(g) ---> 2AlCl3(s)
Do step 5: Solve the fractions.
7,635.93/266.66 = 28.6g Cl2
write BCE for Na2S (aq) +Cu(NO3)2 (aq)
2NANO3 (aq) +CuS (s)
define chemical changes.
the particles of a substance are rearranged, resulting in a change in chemical composition.