390 because im cool and awsome
Would be known as a hypertonic solution which has increased solute and a net movement of water outside causing the cell to shrink.
Answer:
A) 0.1225 M
B) 100.4 g/mol
Explanation:
Step 1: Write the generic neutralization reaction
HA(aq) + NaOH(aq) ⇒ NaA(aq) + H₂O(l)
Step 2: Calculate the reacting moles of NaOH
17.73 mL of 0.1036 M NaOH react. The reacting moles are:
0.01773 L × 0.1036 mol/L = 1.837 × 10⁻³ mol
Step 3: Calculate the reacting moles of HA
The molar ratio of HA to NaOH is 1:1. The reacting moles of HA are 1/1 × 1.837 × 10⁻³ mol = 1.837 × 10⁻³ mol.
Step 4: Calculate the molar concentration of HA
1.837 × 10⁻³ moles of HA are in a 15.00 mL volume. The molar concentration is:
M = 1.837 × 10⁻³ mol / 0.01500 L = 0.1225 M
Step 5: Calculate the molar mass of HA
1.837 × 10⁻³ moles of HA weigh 0.1845 g. The molar mass of HA is:
0.1845 g / 1.837 × 10⁻³ mol = 100.4 g/mol
Answer:
The answer to your question is: 81%
Explanation:
Data
CaO = 2 g
Ca(OH)₂ = 2.14 g
Reaction balanced
CaO + H₂O ⇒ Ca(OH)₂
Molecular mass
Calcium oxyde = 40 + 16 = 56 g
Calcium hydroxide = 40 + 2 + 32 = 74 g
Process
Rule of three
56 g of CaO -------------- 74 g of Ca(OH)₂
2 g of CaO ------------- x
x = (2 x 74) / 56
x = 2.64 g of Ca(OH)₂
Percent yield
% Yield = 
% yield = 81
Gas.
Solid is the slowest; it stays together, so the molecules don't move much.
Liquid is the middle; it stays together for the most part, but it can move.
Gas is the fastest; they can move all over the place!
