All categories

2 years ago

Give an explanation of how an electrical current is produced

Chemistry

2 answers:

Julli [10]2 years ago

8 0

$\huge\underline{ \overline{ \underline{ \bf{your \: answer}}}}$

Electric current can be generated by moving a metal wire through a magnetic field. It is also different than static electricity, which is the accumulation of charges on a surface. Electric generators rotate a coil of wires through a magnetic field.

katen-ka-za [31]2 years ago

6 0

When a voltage is applied to a conductor or semiconductor, electric current starts flowing. In conductors, positively charged protons are held in a fixed position and the negatively charged electrons move from one place to another place by carrying the charge

You might be interested in

Methods scientists use to determine if a change was physical or chemical.

Tpy6a [65]

Chemical reactions can be identified when there is a change in color, energy is produced, change in odor, or if new substance forms.

7 0

3 years ago

Read 2 more answers

Write an overall equation for the acid-base reaction that would be required to produce the following salt. MgCl2

harina [27]

Mg+Cl2--> MgCl2

Magnesium plus chlorine equals magnesium chloride

7 0

3 years ago

Read 2 more answers

Because of the high number of hydrogen bonds, water exhibits ____________ , meaning the molecules cling together. under ordinary

Katena32 [7]

Answer: 1) "cohension" ;

2) "liquid" .
____________________________________________________________

4 0

3 years ago

If an obect looks blue it reflects____ waves

amid [387]

All but blue cuh ♿️

6 0

3 years ago

A buffer contains 0.18 mol of propionic acid (C2H5COOH) and 0.26 mol of sodium propionate (C2H5COONa) in 1.20 L. What is the pH

Yuki888 [10]

Answer:

1) pH = 5.05

2) pH = 5.13

3) pH = 4.97

Explanation:

Step 1: Data given

Number of moles of propionic acid = 0.18 moles

Number of moles sodium propionate = 0.26 moles

Volume = 1.20 L

Ka = 1.3 * 10^-5 → pKa = 4.989

Step 2: Calculate concentrations

Concentration = moles / volume

[acid]= 0.18/ 1.2 =0.150 M

[salt]= 0.26/ 1.3 = 0.217 M

pH = 4.89 + log(0.217/0.150)=5.05

What is the pH of the buffer after the addition of 0.02 mol of NaOH?

moles acid = 0.18 - 0.02 = 0.16

[acid]= 0.16/ 1.2=0.133 M

moles salt = 0.26 + 0.02 = 0.28

[salt]= 0.28/ 12=0.233

pH = 4.89 + log 0.233/ 0.133 = 5.13

What is the pH of the buffer after the addition of 0.02 mol of HI?

moles acid = 0.18+ 0.02 = 0.20 moles

[acid]= 0.20/ 1.2 = 0.167 M

[salt]= 0.26 - 0.02= 0.24 moles

[salt]= 0.24/ 1.2 = 0.20 M

pH = 4.89 + log 0.20/ 0.167= 4.97

8 0

2 years ago