Question 5 -
Ais a solution of mineral acid containing 0.06moldm
Bis a solution of sodium hydroxide containing 4.0gdm
A student titrated solution A against 25.0cm portion of B using methyl orange indicator. His
result is presented in the table below.
Titrations
1
2.
3
Final burette reading(cm)
2.80 21.50
24.00
Initial burette reading (cm)
01.30
0.100 89.50
Volume of acid used (cm)
20.50
121.40
20.50
With the information provided above .Calculate the (a)Amount of acid in the average titre (b)concentration of sodium hydroxide in mol/dm-3 (c)Amount of sodium hydroxide in the volume of Pipette (d)Mole ratio of acid to base in the reaction

For cyclohexane compounds drawn in a chair conformation:   -axial bonds are vertical  -equatorial bonds are parallel to two bonds within the ring.  thus, as i assume the chair conformation is drawn:   -the x group is in an axial position, as are the five other vertical bonds.  -three axial bonds are on the top face of the ring  -the other three axial bonds are on the bottom face  the position of the second substituent on each ring carbon is equatorial.  gauche groups must be on an adjacent carbon such as carbon 6 and carbon 2, and also gauche groups are rotated by 60 degrees relative to each other.  drawing the newman projections for c1–c2 and c1–c6 aids in visualizing the groups that are gauche to the y group on c1.  click this link and watch some academic videos that may you more understand the topic 

Sun is explosive itself spread 9 planets.earth is 3rd explosive in the solar system about 500 hundred million years ago . first earth became ice age and freezing climate.centre of earth magma. north zone is artic . south is anatric

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid