Answer:
There are two types of mixtures: heterogeneous and homogeneous. Heterogeneous mixtures have visually distinguishable components, while homogeneous mixtures appear uniform throughout. The most common type of homogenous mixture is a solution, which can be a solid, liquid, or gas.
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Answer:
2.28 atm
Explanation:
V₁ = 2.33L, V₂ = 1.08L
T₁ = 289K, T₂ = 304K
P₁ = 1.05 atm, P₂ = ?
Where V₁ and V₂ are initial and final volume respectively
T₁ and T₂ are initial and final temperature respectively
P₁ and P₂ are initial and final pressure respectively
The formula to be used here is the general gas equation:
P₁V₁/T₁=P₂V₂/T₂
1.05 × 2.23/289 = P₂ × 1.08/304
P₂ × 1.08 × 289 = 1.05 × 2.23 × 304
P₂ = (1.05 × 2.23 ×304) ÷ (1.08 × 289)
P₂ = 711.82 ÷ 312.12
P₂ = 2.28 atm
Half life means is the amount of time only half the uranium is left. So after 68.9 years only 150/2 = 75 g is left. Another 68.9 years go by and then 75/2 = 37.5 g remains. See the pattern here?
then you can divide 250 by 68.9 to see how many times it's halved or just write the equation:
A = 150(0.5)^(t/68.9)
t is 250 years, A is amount left
A = 150(0.5)^(3.63)
A = 12.13 g
C4H6O3 + H2O → 2 С2Н402
Explanation:
To balance the equation
C4H6O3 + H2O → С2Н402
On the reactant side
C = 4
H = 8
O = 4
On the product side
C = 2
H = 4
O = 2
So by putting 2 on the product side to С2Н402, we can balance the equation on both the sides.
Hence, the balanced equation is
Acetic Anhydride + Water → 2 molecules of Acetic Acid
C4H6O3 + H2O → 2 С2Н402
Answer:
Explanation:
a) the units of the constants 200 and 10 are as follows:
unit of 200 = unit of r / unit of D
= crystals/min× mm
= crystals / (min×mm)
unit of 10 = unit of r / unit of D^2
= crystals/min × mm²
= crystals / (min×mm²)
b) The objective here is to determine the crystal nucleation rate in crystals/s corresponding to a crystal diameter of 0.050 inch; T o do that ; let's first convert the inch to mm
We all know that
1 inch = 25.4 mm
0.050 inch = 0.050 ×25.4 mm
= 1.27 mm
nucleation rate = 200×D - 10×D²
= 200×1.27 - 10×(1.27)²
=237.9 Crystals/min
=237.9/60 crystals/sec
= 3.96 crystals/sec
c) Derive a formula for r(crystals/s) in terms of D(inches). (See Example 2.6-1.) Check the formula using the result of Part b.
r(crystals/sec)=A D−B D²
(D in inch)
unit of 200= crystals / (min×mm)
unit of 10=crystals / (min×mm²
)
A = 200 crystals / (min×mm) × 1/60 min/sec ×25.4 mm/inch
= 84.7 crystals/(sec-inch)
B = 10 crystals / (min×mm²
) × 1/60 min/sec ×25.4 mm/inch×25.4 mm/inch
=107.5 crystals/(sec-inch)