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exis [7]
3 years ago
9

Can someone help me!

Chemistry
2 answers:
Art [367]3 years ago
5 0

Answer:

A

Explanation:

anzhelika [568]3 years ago
5 0

Answer:

A: joules are the si units for specific heat capacity

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At 25°C 12 M H202 is decomposed after 30 minutes the concentration of the H2O2 is found to be 9.5 M what is the average reaction
Bess [88]
The decomposition reaction of hydrogen peroxide:
2 H₂O₂(aq) →  2 H₂O(l) + O₂(g)
The order of reaction is : first order reaction.
[H₂O₂]₀ = 12 M at time = 0
[H₂O₂] = 9.5 M at time = 30 minutes
Average reaction rate = - (Δ[reactants] / Δt) 
                   = - (final reactants conc. - initial reactants conc.) / Δt
                   = - (9.5 M -12 M) / (30 min - 0 min) 
                   = 0.083 mol / L.min
8 0
3 years ago
A hydrate of CoCl2with mass of 6.00g heated strongly. After cooling, the mass of anhydrate is 3.27g . How many grams of H2O were
OverLord2011 [107]
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4 0
4 years ago
How would you describe the molecule in the image?
Anni [7]
Definitely f high electronegative
6 0
4 years ago
GIVING BRAINLY AND 20 POINTS
ipn [44]

Explanation:

frequency= velocity/ wavelength

= 340/1.36

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3 years ago
Analyse the temperature versus time graph of water, given below.
BlackZzzverrR [31]

Answer:

Phase C - Liquid State

Phase E - Gaseous State

Explanation:

Usually, in phases of water, we have the following;

When temperature is less than zero, it is said to be in its solid phase as ice.

When temperature is between 0 to 100, we can say it is in the liquid phase as water.

When temperature is above 100°C, It is said to be in the gaseous phase as vapour.

From the diagram;

Phase C is the only liquid state because it falls between temperature of 0°C and 100°

Also, only phase E is in the gaseous phase because the temperature is above 100°C.

3 0
3 years ago
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