Answer:
primary active transport
Explanation:
Active transport requires energy as they transport molecules against the concentration gradient. According to source of the energy used, active transport is divided into two types which are the primary active transport and the secondary active transport.
The energy is derived directly from breakdown of the ATP molecules in primary active transport. The energy is derived secondarily in the secondary active transport.
Hence, sodium-potassium pump is activated by the ATP. This activation allows pump to transport the sodium and the potassium ions against the gradient.
<span>C) more stable than individual atoms, as now the outer energy levels of all atoms are filled. Both the carbon and the oxygen atoms are "happier" with this arrangement than they would be on their own. This can be shown by drawing a molecular orbital diagram. You would see that the electrons nearly fill the lower parts of the orbital, the bonding levels, but are not in the anti-bonding levels. This implies the atom is relatively stable.</span>
1)sodium chloride/common salt
2)sodium hydroxide
3)sodium carbonate/washing soda
4)sodium bi-carbonate/baking soda
5)calcium hypochlorite/bleaching power
6)hemihydrate calcium sulphate/plaster of Paris
7)calcium sulfate
8)copper sulfate
9)bororn trifluoride
10)potassium nitrate
I could only find ten examples
Reaction equation:
Zn + 2HCl → ZnCl₂ + H₂
One mole of gas occupies 22.4 L at STP
Moles of H₂ = 112/22.4
= 5 moles
The theoretical amount of Zn needed is 5 mol
The actual amount = 5/0.85
= 5.88 moles
mass = moles x Mr
mass = 5.88 x 65
mass = 382.2 g
The answer is D.