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Flura [38]
3 years ago
13

What are the three things chloroplasts needs in order to complete photosynthesis?

Chemistry
1 answer:
STatiana [176]3 years ago
6 0
Carbon dioxide, water;then energy source in sunlight and chlorophl maybe
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Answer question 13. What is the mechanical advantage of a lever that can lift a 100 N load with a input force of 20 N
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MA= output force/ input force
MA= 100N/20N
MA= 50
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What is the voltage of a circuit in a toaster with 12.0 amps of current and 8.0 ohms of resistance?
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The answer is 96 volts
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How many molecules are present in 4.5<br> moles of H2O?
Gekata [30.6K]

Answer:

Mole of the H2O = 4.5

Number of molecules =4.5 multipled by avogadro's number.

6 0
3 years ago
Calculate the enthalpy change, ∆H in kJ, for the reaction H2O(s) → H2(g) + 1/2O2(g). Use the following information: : +279.9 kJ
Len [333]

Answer:

+ 291.9 kJ

Solution:

The equation given is as;

H₂O ₍s₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = ?

First, as we know the heat of formation of H₂O ₍l₎ is,

H₂ ₍g₎ + 1/2 O₂ ₍g₎ → H₂O ₍l₎ ΔH = - 285.9 kJ

Now, reversing the equation will reverse the sign of heat as,

H₂O ₍l₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 285.9 kJ

Also, we know that,

H₂O ₍s₎ → H₂O ₍l) ΔH = + 6.0 kJ

Now, adding last two equations,

H₂O ₍l₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 285.9 kJ

H₂O ₍s₎ → H₂O ₍l) ΔH = + 6.0 kJ

-----------------------------------------------------------------------------

H₂O ₍s₎ → H₂ ₍g₎ + 1/2 O₂ ₍g₎ ΔH = + 291.9 kJ

5 0
3 years ago
Which is a sign of a chemical change?
Igoryamba
The correct answer for the question it is option  

>>>>D<<<<

%100 sure 

if you need another answer welcome to come

7 0
3 years ago
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