Answer:
The rate of a chemical reaction is directly proportional to the concentration. The rate of a chemical reaction increases as the substrate concentration increases and thus, concentration of the substrate in an enzyme-controlled chemical reaction increases with time.
Explanation:
The rate of a chemical reaction is directly proportional to the concentration.
The reaction rate increases with increasing substrate concentration, but levels off at a much lower rate. By increasing the enzyme concentration, the maximum reaction rate greatly increases.
Generally, the rate of a chemical reaction increases as the substrate concentration increases, and thus, concentration of the substrate in an enzyme-controlled chemical reaction increases with time.
Answer:
hope this will help you......
Answer:
0.13 J/g.°C.
Explanation:
- To solve this problem, we can use the relation:
<em>Q = m.c.ΔT,</em>
where, Q is the amount of heat absorbed by lead (Q = 29.0 J).
m is the mass of lead (m = 15.0 g).
c is the specific heat capacity of lead (c = ??? J/g.°C).
ΔT is the temperature difference (final T - initial T) (ΔT = 37 °C - 22 °C = 15.0 °C).
∵ Q = m.c.ΔT
<em>∴ c = Q/m.ΔT </em>= (29.0 J)/(15.0 g)(15.0 °C) = <em>01288 J/g.°C ≅ 0.13 J/g.°C.</em>
Answer:
No, cutting paper is a physical change. Meaning that it is still paper no matter how many times you cut it. its chemical properties have not changed and it is still paper. cutting it would just give you smaller pieces of paper.
Answer:
0.102 mol
Explanation:
Step 1: Write the balanced equation
PCl₅ + 4 H₂O ⇒ 5 HCl + H₃PO₄
Step 2: Calculate the moles corresponding to 7.36 g of H₂O
The molar mass of H₂O is 18.02 g/mol.
7.36 g × 1 mol/18.02 g = 0.408 mol
Step 3: Calculate the moles of PCl₅ required to react with 0.408 moles of H₂O
The molar ratio of PCl₅ to H₂O is 1:4.
0.408 mol H₂O × 1 mol PCl₅/4 mol H₂O = 0.102 mol PCl₅
