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cluponka [151]
3 years ago
11

1. What two types of cells contain chloroplasts?

Chemistry
1 answer:
Vikentia [17]3 years ago
5 0

Answer:

plant cells and eukroyatic algae

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Calculate the electrical energy per gram of anode material for the following reaction at 298 K:
antiseptic1488 [7]

The answer is:

E per gram = 0.45 V

The explanation:

when MnO2 is the substance who oxidized here so, the oxidizing agent and the anode here is Li.

and when the molar mass of Li is = 7 g/mol

and in our reaction equation we have 1 mole of Li will give 3.15 V of the electrical energy

that means that :

7 g of Li gives → 3.15 V

So 1 g of Li will give→ ???

∴ The E per gram = 3.15 V / 7 g of Li

= 0.45 V

6 0
3 years ago
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Calculate no. Of moles in 329g of H2so4
Anestetic [448]
Mol= mass (grams) /Mr
Mr of Sulfuric Acid (H2SO4): 98
mol= 329/98
=3.36 moles
8 0
3 years ago
Please help ASAP!!!
77julia77 [94]

Answer: #1 The poppy seeds represent the protons, electrons and neutrons

#2 The fiberfill represents the nucleus   #3 Protons and neutrons are in the nucleus  #4 Electrons are the particles that are surrounding the nucleus  #5 Because they are representing different things and they are their own entity            

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5 0
3 years ago
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Calculate the mass of 25,000 molecules of nitrogen gas. (1 mole = 6.02 x 1023 molecules)
Ainat [17]

Hey there!

Molar mass N2 = 28.01 g/mol

Therefore:

28.01 g N2 -------------- 6.02*10²² molecules N2

( mass N2 ?? ) ----------- 25,000 molecules N2

mass N2 =  ( 25,000 * 28.01 ) /  ( 6.02*10²³ )

mass N2 = 700250 / 6.02*10²³

mass N2 = 1.163*10⁻¹⁸ g


Hope that helps!

7 0
3 years ago
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What is the solubility product expression for Ag2CO3
Dominik [7]
<span> Ksp = [Ag+]^2[CO32-]that should be it </span>
7 0
3 years ago
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