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pochemuha
3 years ago
9

Which book has kinetic energy

Chemistry
1 answer:
bekas [8.4K]3 years ago
3 0
Where is the picture
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What evidence did Mendeleev use to decide that the alkali metals should be in the same group?
Bezzdna [24]

Answer:

they all reacted the same

Explanation:

4 0
3 years ago
If 2.9g of water is heated from 23.9C to 98.9C, how much heat (in calories) was added to the water?
tensa zangetsu [6.8K]

Answer:

Explanation:

we know that

ΔH=m C ΔT

where ΔH is the change in enthalpy (j)

m is the mass of the given substance which is water in this case

ΔT IS the change in temperature and c is the specific heat constant  

we know that given mass=2.9 g

ΔT=T2-T1 =98.9 °C-23.9°C=75°C

specific heat constant for water is 4.18 j/g°C

therefore ΔH=2.9 g*4.18 j/g°C*75°C

ΔH=909.15 j

7 0
3 years ago
What happens to the energy of gas particles when an elastic collision takes place?
julia-pushkina [17]
The answer is D because there is no forces of attraction or repulsion between gas particles .
3 0
3 years ago
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Please help!! 20 points!! Posted this previously and forgot to change it to 20 points but it is now
spayn [35]

Answer:

0.571 mol

Explanation:

Given data:

Number of moles of NaHCO₃ = 0.571 mol

Number of moles of CO₂ produced = ?

Solution:

Chemical equation:

NaHCO₃ + C₃H₆O₃   →     CO₂  + C₃H₅NaO₃ + H₂O

Now we will compare the moles of CO₂ with NaHCO₃ from balance chemical equation.

                             NaHCO₃          :            CO₂

                                    1                :               1

                                 0.571            :            0.571

So number of moles of CO₂  produced are 0.571.

3 0
3 years ago
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Why can water be used in the cooling system of a car? A. it always heats the car in the winter B. it helps fluctuate temperature
JulsSmile [24]
The answer is C. It resists fast temperature change
8 0
3 years ago
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