Answer:
4.49 mmHg
Explanation:
Formula for osmotic pressure → π = M . R . T
M → molarity
Let's determine the moles of pepsin (mass / molar mass)
0.5 g / 35000 g/mol = 1.43 mol ×10⁻⁵ moles
These moles are in 60 mL of an aqueous solution. Let's determine M (mo/L)
1.43 mol ×10⁻⁵ mol / 0.060 L = 2.38×10⁻⁴ M
Noticed we changed the volume from mL to L → 60 mL . 1L/1000mL
T → T°K = T°C + 273 → 30°C +273 = 303K
Now we can put data on the formula:
π = 2.38×10⁻⁴ mol/L . 0.082 L.atm/mol.K . 303K
π = 5.91×10⁻³ atm
Let's convert the atm to mmHg
5.91×10⁻³ atm . 760mmHg / 1atm = 4.49 mmHg
Answer:
0.0064 qt
Explanation:
Given data:
Density of mercury = 13.6 g/cm³
Mass of mercury = 83.0 g
How many quarts mercury have = ?
Solution:
First of all we will calculate the volume in cm³.
d = m/v
13.6 g/cm³ = 83.0 g / volume
Volume = 83.0 g / 13.6 g/cm³
Volume = 6.1 cm³
cm³ to L:
6.1 cm³ × 1 L / 1000 cm³
0.0061 L
In quarts:
1 L = 1.06 qt
0.0061 L × 1.06 qt / 1 L
0.0064 qt
Answer:
The reaction will absorb energy
Explanation:
A potential energy diagram shows the energy changes that occur during a chemical reaction. It is also called a reaction progress curve. The diagram shows the changes that occur as reactants are converted into products.
The best conclusion according to the energy diagram of the chemical reaction is that the reaction will absorb energy.
a) 
→ 
b) 
→ 
<h3>
What are half-reactions?</h3>
The half-reaction method is a way to balance redox reactions. It involves breaking the overall equation down into an oxidation part and a reduction part.
a)
→
= 
= -0.83 - (-2.71) =1.88V
b)
→
= 
=-0. - (0.8) =-0.8V
Learn more about the half-reactions here:
https://brainly.in/question/18053421
#SPJ1
Positive ions are atoms that have lost an electron from its outtermost shell. It is positive because electrons are negative and the loss of something negative makes it a bit more positive.
A negative ion is larger than its original atom because it's gained an electron.
The more electrons an atomic has on its electron cloud, the bigger the atom.
Hopefully I didn't confuse you, good luck. ♡
