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Luden [163]
3 years ago
5

4. DNA replication:

Chemistry
2 answers:
garri49 [273]3 years ago
7 0

Answer:

b

Explanation:

icang [17]3 years ago
5 0

Answer:

A.

Explanation:

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2. Describe the steps involved, in order, when the sun’s energy is converted to light from a street lamp via a solar cell.
geniusboy [140]
- Light energy from sun is converted into electrical energy in a solar cell.
- Electrical energy is stored as chemical energy in the solar cell.
- Chemical energy is converted back into electrical energy at night.
- Electrical energy is converted into light energy from the street lamp.

6 0
3 years ago
The reaction between ammonia and oxygen is given below:
anyanavicka [17]

Answer:

N2O(g) + 3 H2O(l) ---------------> 2 NH3(g) + 2 O2(g)

Explanation:

If we look at the reaction stated in the question, we will notice that the option chosen in the answer is the reverse of that reaction.

One thing is clear, if a reaction is possible, then its reverse reaction is equally possible. The equilibrium position may shift towards the forward or reverse reaction based on the conditions of the reaction.

Hence if the reaction, 2NH3(g) + 2O2(g) → N2O(g) + 3H2O(l) is possible, then the reaction, N2O(g) + 3 H2O(l) ---------------> 2 NH3(g) + 2 O2(g) is also possible.

4 0
3 years ago
How many moles are in 1.9 x 10^25 molecules of carbon dioxide
Mashcka [7]
1 mole ----------- 6.02x10²³ molecules
? moles --------- 1.9x10²⁵ molecules

moles = 1.9 x 10²⁵ * 1 / 6.02x10²³

= 1.9 x 10²⁵ / 6.02x10²³

= 31.561 moles

hope this helps!
4 0
3 years ago
What is 8.211 km - 4.0060 km + 1.31 km
gizmo_the_mogwai [7]
5.515km.
With BIDMAS, you would do the addition first and then do the subtraction.
6 0
2 years ago
When a deer eats too much in a given area, we call this _________.
Sophie [7]

Answer:

Over-browsing

6 0
3 years ago
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