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diamong [38]
3 years ago
15

Plz answer this i will mark brainly like and ratr

Chemistry
1 answer:
matrenka [14]3 years ago
4 0

Answer:

answer what ?

Explanation:

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2.5 piece of lithium is dropped into a 500 g sample of water at 22.1 C.ten temperature of the water increases to 23.5 C. How muc
Dominik [7]

Answer:

2.6 kJ  

Explanation:

The formula for the amount of heat (q) absorbed by the water is

q = mCΔT

1. Calculate ΔT

ΔT = 23.5 °C - 22.1 °C = 1.4 °C

2. Calculate q

q₂ = mCΔT = 500 g × 4.184 J·°C⁻¹g⁻¹ × 1.4 °C = 2900 J = 2.9 kJ

3 0
3 years ago
This is an impossible formula. Pretend it is real.
guapka [62]

There are eight moles of oxygen atoms  in 1 mole of Mn_{9}(ClO_{4}) _{2}.

<h3>What is the number of moles of oxygen atoms?</h3>

We know that a compound is composed of atoms. The atoms that make up the molecule are chemically combined. It is usual that the number of atoms in the compound would correspond with the chemical formula.

Now we have the compound  Mn_{9}(ClO_{4}) _{2}. In one mole of the compound we have;

  • 9 Moles of manganese atom
  • 2 moles of chlorine atom
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Thus, there are eight moles of oxygen atoms  in 1 mole of Mn_{9}(ClO_{4}) _{2}.

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Why are gamma rays not affected by a magnet as they Passover it
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Gamma rays are not magnetic
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KBr(aq) + NaCl(aq) =
torisob [31]
It’s ionic
KCl(at)
Potassium chloride
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Arrange the components of the electron transport chain in order from least electronegative to most electronegative thereby indic
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The least electronegative component in the electron transport chain is the Hydrogen ion. 
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The other component is H2O,
Next are the energy carrier molecules which are the ADP and ATP
And finally, the most electronegative is O2.
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3 years ago
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