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adell [148]
3 years ago
14

Which of the following is a half-reaction? A. Zn+CuSO4−> B. 2Cl−−>Cl2+2e− C. H2+1/2O2−>H2O D. −>Cu+ZnSO4

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

Answer:

2Cl——>Cl2+2e-

Explanation:

It shows an electron loss or gain

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aksik [14]

Answer:

It's B on Edge

Explanation:

8 0
3 years ago
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What volume is occupied by 0.102 molmol of helium gas at a pressure of 0.95 atmatm and a temperature of 305 kk ?
zalisa [80]

The volume occupied by 0.102 mole of the helium gas is 2.69 L

<h3>Data obtained from the question</h3>

The following data were obtained from the question:

  • Number of mole (n) = 0.102 moles
  • Pressure (P) = 0.95 atm
  • Temperature (T) = 305 K
  • Gas constant (R) = 0.0821 atm.L/Kmol
  • Volume (V) =?

<h3>How to determine the volume </h3>

The volume of the gas can be obtained by using the ideal gas equation as illustrated below:

PV = nRT

Divide both sides by P

V = nRT / P

V = (0.102 × 0.0821 × 305) / 0.95

V = 2.69 L

Thus, the volume of the gas is 2.69 L

Learn more about ideal gas equation:

brainly.com/question/4147359

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8 0
2 years ago
A spacecraft is traveling at a speed of 2.3 km/sec. It takes 2.5 minutes to pass a small asteroid. how wide is the asteroid (i.e
lidiya [134]

<u>Answer:</u> The spacecraft traveled 345 km during the given time.

<u>Explanation:</u>

To calculate the distance of spacecraft, we use the equation:

\text{Velocity}=\frac{\text{Distance}{\text{Time}}

We are given:

Velocity = 2.3 km/sec

Time = 2.5 mins = 150 sec             (Conversion factor: 1 min = 60 sec)

Putting values in above equation, we get:

\text{Distance}=(2.3km/s\times 150s)=354km

Hence, the spacecraft traveled 345 km during the given time.

4 0
3 years ago
1. What force binds galaxies together?​
Sindrei [870]

Answer:

Gravity.

Explanation:

Black holes in the center of most galaxies hold the galaxy together by gravity. Everything is sucked towards the center and kept together.

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How to find the mass of 12dm³ of hydrogen, H2
Soloha48 [4]

you can use the formula F=MA to find any mass of almost anything .

5 0
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