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Fofino [41]
3 years ago
5

An electromagnet is different from a permanent magnet because an electromagnet ___________________________

Chemistry
1 answer:
Viefleur [7K]3 years ago
4 0
can turn on and off because it is active through an electric current and when the current is gone it no longer works . electromagnets<span>, - devices that create a magnetic field through the application of electricity. Wrecking yards employ extremely powerful electromagnets to move heavy pieces of scrap metal or even entire cars from one place to another. Your favorite band uses electromagnets to amplify the sound coming out of its speakers. And when someone rings your doorbell, a tiny electromagnet pulls a metal clapper against a bell.</span>
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The equations given in the problem introduction can be added together to give the following reaction: overall: N2O4→2NO2 However
Murljashka [212]

Answer:

Reverse the 2 NO_2 \longrightarrow 2 NO + O_2  reaction

Explanation:

Reactions:

2 NO_2 \longrightarrow 2 NO + O_2

N_2O_4 \longrightarrow 2 NO + O_2

Overall:

N_2O_4 \longrightarrow 2 NO_2

As can be seen, in the overall reaction we have N_2O_4 in the reactants like in the second reaction and NO_2 in the products. The NO_2 is in the first reaction but as a reactant so we need to reverse that reaction:

2 NO + O_2 \longrightarrow 2 NO_2

N_2O_4 \longrightarrow 2 NO + O_2

Combining:

N_2O_4 + 2 NO + O_2\longrightarrow 2 NO + O_2 + 2 NO_2

N_2O_4 \longrightarrow 2 NO_2

4 0
3 years ago
What happens when a parking lot is built in a wetlands area?
Airida [17]
The ground could sink and sink holes could occur, otherwise the parking lot could simply break apart and wear faster
5 0
3 years ago
Read 2 more answers
Conversion of gaseous nitrogen to liquid nitrogen is an
miss Akunina [59]

Answer:

true

Explanation:

you can't change it back, it's chemically changed

8 0
3 years ago
Please leave workings as well
yulyashka [42]

Answer:

15g

Explanation:

The equation for the reaction is given below:

CaO + SO2 —> CaSO3

Molar Mass of CaO = 40 + 16 = 56g/mol

Molar Mass of CaSO3 = 40 + 32 + (16x3) = 40 + 32 + 48 = 120g/mol

From the equation,

56g of CaO produced 120g of CaSO3.

Therefore, 7g of CaO will produce = (7 x 120)/56 = 15g of CaSO3

Therefore, 15g of CaSO3 is produce

5 0
3 years ago
The transfer of pollen grains from another of a male to the stigma of female flower
telo118 [61]

Answer:

pollination is the proces called

4 0
3 years ago
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