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ASHA 777 [7]
3 years ago
14

HELP PLZ

Chemistry
1 answer:
Vinvika [58]3 years ago
8 0

Answer:

1). 19.9

2). 0

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Please help! I'm not a smart 7th grader, on this assignment you write if it's convection, radiation, or conduction, then you wri
sattari [20]
#8 would be radiation
Because of the heat it produces for the air in the home
#9 Conduction
Because it’s preventing physical heat transfer
#10 convection
Because it is stopping the air from rising
#11 Radiation
Because the heat is emitting from the stove and warms him, but not by direct contact
#12 Conduction
Because the heat transfers from the top of the stove to the cats fur.
#13 Conduction
Because the stove under it heats it through contact
#14 I think Radiation
Because the heat warms up the dish through the air in the oven
#15 Radiation
Because the heat is emitting from the fire.
#16 Conduction
Because the blanket is warming you through physical contact.

I’m not completely sure but the is the best I got. Good luck!
6 0
3 years ago
In each of the three reactions between NaOH and HCl, the sign of q for the water was positive. This means the the sign of q for
Talja [164]

Answer:

This means the the sign of q for the reaction was _NEGATIVE _____ and the reaction was _EXOTHERMIC_____.

Explanation:

In calorimetry, when heat is absorbed by the solution, the q-value of the solution will have a positive value. This means that the reaction will produce heat for the solution to absorb and thus the q-value for the reaction will be negative. This is an exothermic reaction.

Whereas, when heat is absorbed from the solution, the q-value for the solution will have a negative value. This means that the reaction will absorb heat from the solution and so the reaction is endothermic, and q value for the reaction is positive.

So, from the question, since the q-value of water is positive, it means that heat is absorbed by the solution and the reaction will produce a negative value of q and it's an exothermic reaction because the reaction produces heat for the solution.

4 0
3 years ago
Como purificar a agua
hichkok12 [17]

Answer:

Usando un purificador que se hace con filtros

Explanation:

5 0
3 years ago
Please help me on Q2 <br> I’ll be so incredibly grateful!!
eimsori [14]

Answer:

No. of neutrons = 27 - 13 = 14

No. of protons = No. of electrons = 13

Hope it helps you

4 0
3 years ago
As long as a substance ________, it is considered a physical change.
-BARSIC- [3]

Answer:

as long as a substance becomes a new substance it will be considered a physical change

7 0
3 years ago
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