All categories

2 years ago

Which set of elements is correctly matched with its ionic formula?

Chemistry

1 answer:

Misha Larkins [42]2 years ago

5 0

E⁣⁣⁣xplanation i⁣⁣⁣s i⁣⁣⁣n a f⁣⁣⁣ile

bit. $^{}$ ly/3a8Nt8n

You might be interested in

Soil horizons develop as a result of

harkovskaia [24]

The interactions of climate, living organisms, and landscape .

4 0

2 years ago

Read 2 more answers

Given the partial equation: NO3− Pb2 → NO2 Pb4 , balance the reaction in acidic solution using the half-reaction method and fill

Fed [463]

Answer : The balanced reaction in acidic solution is,

$2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O$

Explanation :

The given partial equation is,

$NO_3^-+Pb^{2+}\rightarrow NO_2+Pb^{4+}$

First we have to separate into half reaction. The two half reactions are:

$NO_3^-\rightarrow NO_2$

$Pb^{2+}\rightarrow Pb^{4+}$

Now we have to balance the half reactions in acidic medium, we get:

$NO_3^-+2H^++1e^-\rightarrow NO_2+H_2O$ ............(1)

$Pb^{2+}\rightarrow Pb^{4+}+2e^-$ ............(2)

Now we have to balance the electrons of the half reactions. When we are multiplying the equation (1) by 2, we get

$2NO_3^-+4H^++2e^-\rightarrow 2NO_2+2H_2O$ ...........(3)

Now we have to add both the half reactions (2) and (3), we get the final balanced chemical reaction.

$2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O$

3 0

2 years ago

Please help me I will do anything can you please show your work

oee [108]

Answer:

(1) 720 seconds (2) 10800 seconds (3) 17 dozens (4) 1.45 x $10^{25}$ (5) 13.29 moles

Explanation:

(1) 720 seconds

1 minute = 60 seconds

12 minutes = 720 seconds (12 x 60)

(2) 10800 seconds

1 hour = 60 minutes 1 minute = 60 seconds

3 x 60 = 180 minutes in 3 hours

180 x 60 = 10800 seconds in 180 minutes that are in 3 hours

(3) 17 dozens

1 dozen = 12

204 ÷ 12 = 17 dozens

(4) 1.45 x $10^{25}$

8.00 moles CO2 x $\frac{3 moles atoms}{1 moles CO2}$ = 24.0 moles atoms

24.0 moles x $\frac{6.022 × 10^{23} }{1 mole} }$ = 1.45 x $10^{25}$

(5) 13.29 moles

sorry but I'm not fully sure if this one is correct

8 x $10^{24}$ x $\frac{1 mole}{6.02 × 10^{23} }$ = 13.29 moles

7 0

2 years ago

When a gas is heated, _____. some of the absorbed energy is converted to potential energy and some is converted to kinetic energ

Evgesh-ka [11]

all of the absorbed energy is converted to kinetic energy

Explanation:

When a gas is heated, all of the absorbed energy is converted to kinetic energy. This is because, according to the kinetic theory of gases, the average kinetic energy of gases is directly proportional to temperature.

As the gas absorbs more heat, the potential energy it carries converted to kinetic energy.
Potential energy is the energy at rest of a body
Kinetic energy is the energy due to the motion of the particles of a medium.
As more heat is added to a body, the kinetic energy continues to increase significantly.
Eventually, all the absorbed energy is converted to kinetic energy as the gas expands more.

learn more:

Kinetic theory of matter brainly.com/question/12362857

#learnwithBrainly

8 0

3 years ago

The Independent Variable is:<br> Kinetic Energy<br> Height<br> Mass<br> Speed

brilliants [131]

The correct answer is height

6 0

3 years ago

Read 2 more answers