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Brilliant_brown [7]
2 years ago
15

Why does ice float in water?

Chemistry
1 answer:
MaRussiya [10]2 years ago
5 0
Ice has a lower density than the density of water.
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Explain why chemistry affects all aspects of life and most natural events
Alecsey [184]

Chemistry affects all aspects of life and most natural events because all living and nonliving things are made of matter.

6 0
3 years ago
What is △n for the following equation in relating Kc to Kp?
Nimfa-mama [501]

Answer:

-1  

Explanation:

The relation between Kp and Kc is given below:

K_p= K_c\times (RT)^{\Delta n}

Where,  

Kp is the pressure equilibrium constant

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R is gas constant , 0.082057 L atm.mol⁻¹K⁻¹

T is the temperature in Kelvins

Δn = (No. of moles of gaseous products)-(No. of moles of gaseous reactants)

For the first equilibrium reaction:

2Na_{(s)}+2H_2O_{(l)}\rightleftharpoons 2NaOH_{(aq)}+2H_2_{(g)}

<u>Δn = (No. of moles of gaseous products)-(No. of moles of gaseous reactants)  = (2+1)-(2+2) = -1  </u>

<u></u>

7 0
3 years ago
Which of the following elements is the most reactive?
Maksim231197 [3]
<span>the following element that is most reactive </span>would be  Fluorine
4 0
2 years ago
Read 2 more answers
Answer it answer it answer it
Archy [21]

Answer:

A

Explanation:

A chemical change is when a new substance is created, which often has its own chemical properties, so A is the correct answer.

4 0
3 years ago
The ion [Co(NH3)6]2+
Romashka-Z-Leto [24]

Explanation:

The answer would be  B.

As paramagnetic with 3 unpaired electrons. Since there are 6 ligands around the Co+2 ion it isoctahedral and these ligands are neutral. This makes the overall charge on the complex +2 and therefore comes from the configuration for Co+2 which is [Ar] 3d7. Since it is in high spin you must fill all the orbitals with at least one electron and then pair up any that remain. If you do this, 3 unpaired electrons remain. Para magnetism occurs in substances with unpaired electrons.

3 0
3 years ago
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