Chemistry
to the mass of a
value of x is
rty is not common
ays?
on zns screen
and magnetic field
53. extraction of chromium is done from chromite ore
(feo cr2o3) by using following steps
4feo cr2o3 + 8na, co, + 70,
- na, croa + 2fe2o3 + 8c02
2na, cro, +h,804-> na cr202 + na so, + h20
na, cr, o, + 3c - na, cr,04+ 300
na cr2o4 + h2o → cr2o3 + 2naoh
cr2o3 + 2a1 a1,o2 + 2cr
if 0.2 mole of chromite ore is used initially and rest!
of the reactants are in excess, then mole of
chromium formed will be
(1) 0.2
(2) 0.4
(3) 0.3
(4) 0.6
the moon coloured niament in plants
dent of the nature
tube

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

What is the relationship between wind and ocean waves? question 17 options: wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves. wind moving at higher speeds will transfer energy over a larger part of the ocean water, resulting in waves with a shorter wavelength. winds moving at higher speeds with cause water to move forward at faster rates, causing larger ocean waves. winds moving at higher speeds will affect deeper water, resulting in waves that move at a faster rate. how do temperature and salinity affect deepwater currents? question 15 options: as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.