Answer:
Explanation: As you can see, potassium nitrate has s solubility of about
67 g / 100g H
2
O
at
40
∘
C
. This means that at
40
∘
C
, a saturated potassium nitrate solution will contain
67 g
of dissolved salt for every
10 0g
of water.
You know that at this temperature, your solution contains
35 g
of potassium nitrate in
100 g
of water. This solution will be unsaturated because it contains less potassium nitrate than the maximum amount that can be dissolved.
In order to make a saturated solution, you must get the total mass of potassium nitrate to
67 g
, which means that you must add
mass of KNO
3
a
to be added
=
67 g
−
35 g
=
∣
∣
∣
∣
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
a
a
32 g
a
a
∣
∣
−−−−−−−−
Answer:
V2= 5L
Explanation:
P1= 500kPa, V1= 3L, P2= 300kPa, V2=?
Applying Boyle's law
P1V1=P2V2
(500*3)= (300*V2)
V2= 5L
The meaning of the atomic radius is a large portion of the normal internuclear separation of an atom. It isn't conceivable to deal with one atom. In any case, here internuclear remove does not mean measurement of a solitary particle but rather it implies the separation between the core of two atoms of a similar component.
Answer:
The answer to your question is: i have to answer correct first number three and second number one.
Explanation:
1.-regulate cell processes
: Nucleic acids are located inside the nucleus and the nucleus is the brain of the cell, it says what functions must be done, then I think this option is correct.
2.- provide structure
: Nucleic acids are large molecules but very weak, the couldn't be able to give structure. This option is wrong.
3.- transmit genetic information
: The main function of nucleic acids is transmit genetic information, so this option is correct.
4.- fight disease: Nucleic acids are useful to transmit genetic information, and saying the functions a cell must do but fight against diseases is not one of their functions.
Answer:
The air gap is too narrow to allow the air to circulate easily. This therefore reduces the rate of heat transfer by convection. The trapped air reduces the rate of heat loss through the window by conduction and convection. The room in the house therefore stays warmer for longer reducing heating costs
