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timurjin [86]
3 years ago
14

Which of the following statements about photophosphorylation is FALSE? Energy from oxidation reactions is used to generate ATP f

rom ADP. It requires CO2. The oxidation of carrier molecules releases energy. It occurs in photosynthesizing cells. Light liberates an electron from chlorophyll.
Chemistry
1 answer:
kolbaska11 [484]3 years ago
3 0

Answer:

The FALSE statement is: It requires CO2.

Explanation:

Photophosphorylation is a process during which solar energy, in the form of a proton, impact on chlorophyll, exciting one electron. The excited electron pass along different carriers (Ferredoxin, cytochrome b6f and Plastocyanin) and eventually return to its origin. This electron passage promotes the formation of ATP from ADP (one molecule ATP is formed when three electrons pass throug the cycle).

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Heating devices can be made by passing an electric current through a conductor of:
olchik [2.2K]

Answer:

High resistance

Low conductivity

Explanation:

The more resistance (aka less conductivity) there is, the more the energy is turned into heat than simply  passing through the object.

6 0
3 years ago
How much energy is required to melt 76.941g of ice
olga55 [171]

Answer:

Q=25.7 Kj

Explanation:

76.941 g H2O*1 mol/18.016= 4.27 Mol H20

(4.27 Mol H2O)(6.009 Kj/Mol)

Q=25.7 Kj

5 0
3 years ago
explain why the hydrogen atoms in a hydrogen gas molecule form nonpolar covalent bonds but oxygen and hydrogen atoms in water mo
marishachu [46]

Answer:

Explanation:

Covalent bond:

It is formed by the sharing of electron pair between bonded atoms.  

The atom with larger electronegativity attract the electron pair more towards itself and becomes partial negative while the other atom becomes partial positive.

Non polar covalent bond:

It is the bond where both bonded atoms share the pair of electron equally.

For example:

Hydrogen gas (H₂) is non polar covalent compound because the electronegativity of both bonded atoms are same. No poles are created that's why this is non polar covalent compound.

Polar covalent bond:

It is the bond where both bonded atoms share the pair of electron unequally.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive and bond is polar.

7 0
3 years ago
What has to happen to join two monosaccharide units into a disaccharide?
omeli [17]
A condensation reaction forming a glycosidic bond. so in other words a monosaccharide joining together to form a disaccharide. 

5 0
3 years ago
2.822 mol of nickel has _________ atoms of nickel.<br><br> (Enter just the number for this one.)
Irina-Kira [14]

Hello!

To find the number of atoms in 2.822 moles of nickel, we need to multiply it by Avogadro's number. Avogadro's number is 6.02 x 10^23 atoms.

2.822 moles x (6.02 x 10^23) ≈ 1.698844 x 10^24

Therefore, there are about 1.70 x 10^24 atoms (according to the number of significant figures) in 2.822 moles of nickel.

6 0
3 years ago
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