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aev [14]
3 years ago
10

PLS HELPP FIRST TO BE CORRECT WILL GIVE BRANLIEST!!

Chemistry
1 answer:
Setler [38]3 years ago
8 0

Answer:

BaF2 + Na2S → BaS2 + <u>2</u>NaF (balanced equation)

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Near the surface of a liquid, fast-moving particles can break free and become a gas.
Nookie1986 [14]
This statement is True! Lets think about it... When water boils, the water doesnt evaporate from the bottom of the bowl it evaporates from the top! 
=)
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2 years ago
A 32.5 g iron rod, initially at 22.4 ∘C, is submerged into an unknown mass of water at 63.0 ∘C, in an insulated container. The f
a_sh-v [17]

Answer:

m_{H_2O}=39.0g

Explanation:

Hello,

In this case, is possible to infer that the thermal equilibrium is governed by the following relationship:

\Delta H_{iron}=-\Delta H_{H_2O}\\m_{iron}Cp_{iron}(T_{eq}-T_{iron})=-m_{H_2O}Cp_{H_2O}(T_{eq}-T_{H_2O})

Thus, both iron's and water's heat capacities are: 0.444 and 4.18 J/g°C respectively, so one solves for the mass of water as shown below:

m_{H_2O}=\frac{m_{iron}Cp_{iron}(T_{eq}-T_{iron})}{-Cp_{H_2O}(T_{eq}-T_{H_2O}} \\\\m_{H_2O}=\frac{32.5g*0.444\frac{J}{g^0C}*(59.7-22.4)^0C}{-4.18\frac{J}{g^0C}*(59.7-63.0)^0C} \\\\m_{H_2O}=39.0g

Best regards.

8 0
3 years ago
What is the balanced equation for the voltaic cell of copper and silver
Strike441 [17]

Answer:

I dont knw

Explanation:

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2 years ago
Which energy resource has the advantage of producing clean energy that is less harmful to the environment?
AnnyKZ [126]

Answer:

The answer is wind energy.

Explanation:

I did the quiz on time4learning.

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2 years ago
How potential energy changes when two photons approach each other and fuse to form deuterium nucleus
Phoenix [80]

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efrghtyrtjhryExplanation:

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