Answer:
They erected scientific equipment, made precise observations of conditions on the lunar surface, and collected samples of the Moon's soil and rocks.
Explanation:
i hope it is right im really sorry if its not
Answer:
Here's what I find
Explanation:
Mercerization involves the treating of cotton fibres with NaOH solution and then drying them under tension.
The process changes the internal structure of the fibres and causes them to swell.
The advantages of mercerization are:
- Greater affinity for dyes (saves money)
- Increased tensile strength
- A high degree of lustre (better appearance)
- Greater absorption of moisture (e.g., sweat)
- Greater resistance to shrinking
Answer:
3.60 ml
Explanation:
First of all we must put down the equation of the reaction. This will serve as a guide to our solution;
KOH(aq) + HBr(aq) -----> KBr(aq) + H2O(l)
The following were given in the question;
Concentration of acid CA= 2M
Volume of acid VA= 18ml
Concentration of base CB= 0.01 M
Volume of base VB= ????
Number of moles of acid NA= 1
Number of moles of base NB= 1
From;
CAVA/CBVB = NA/NB
CAVANB= CBVBNA
Therefore;
VB= CAVANB/CBNA
Substituting values;
VB= 2 × 18 ×1 / 0.01×1
VB= 3.60 ml
Therefore; 3.60 ml of base was used.
