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oksian1 [2.3K]
3 years ago
11

Which describes TWO important functions of DNA?

Chemistry
2 answers:
Troyanec [42]3 years ago
5 0

Answer:

It copies itself and gives instructions for building cells.

It provides energy to cells and passes from parent to  offspring

Explanation:

The DNA is the genetic materials of the cell upon which any form of inheritance is predicated.

This giant molecules is a very important organelle in all living organisms. It has a double helix structure and can be found within the nucleus.

  • The DNA copies itself and gives instruction for building cells.
  • It has important information needed by the cell to produce protein so DNA replication is a vital process.
  • The DNA is also able to ration energy within the cell.
  • It passes genetic materials from parents to offspring
Brilliant_brown [7]3 years ago
5 0

Answer:

It copies itself and gives instructions for building cells.

Explanation:

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What is the standard enthalpy of a reaction for which the equilibrium constant is (a) doubled, (b) halved when the temperature i
Alexxandr [17]

Answer:

a) 48KJ

b) -48KJ

Explanation:

Given that;

ln(K2/K1) = ΔH°/R(1/T2 - 1/T1)

K2= equilibrium constant at T2

K1 = equilibrum constant at T1

R = gas constant

T1 = initial temperature

T2 = final temperature

When we double the equilibrium constant K1; K2 = 2K1

T1 = 310 K

T2 = 310 + 15 = 325 K

ln(2K1/K1) =- ΔH°/R(1/T2 - 1/T1)

ln2 = -ΔH°/8.314(1/325 - 1/310)

0.693 = -ΔH°/8.314(3.08 * 10^-3 - 3.2 * 10^-3)

0.693 = -ΔH°/8.314 (-0.00012)

0.693 = 0.00012ΔH°/8.314

0.693 * 8.314 = 0.00012ΔH°

ΔH° = 0.693 * 8.314/0.00012

ΔH° = 48KJ

b) K2 =K1/2

ln(K1/2/K1) =- ΔH°/R(1/T2 - 1/T1)

ln (1/2) = -ΔH°/8.314 (1/325 - 1/310)

-0.693 = -ΔH°/8.314  (-0.00012)

-0.693 = 0.00012ΔH°/8.314

-0.693 * 8.314 = 0.00012ΔH°

ΔH°= -0.693 * 8.314/0.00012

ΔH°= -48KJ

6 0
3 years ago
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