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3 years ago

Compost from vegetable peelings can be used as plant fertilizer. * a. reduce b. resuse c. recycle d. recover

Chemistry

1 answer:

Arlecino [84]3 years ago

8 0

Answer:

Is letter B

Explanation:

Hope it helps :))

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Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of sodium sulfide and iron(II) nitrate

Luda [366]

Answer:

Fe^2+(aq) + S^2-(aq) --------> FeS(s)

Explanation:

First let us look at the molecular equation;

Na2S(aq) + Fe(NO3)2(aq) --------> FeS (s) + 2NaNO3(aq)

Now, the net ionic equation usually shows the most important reaction that took place, in this case, the formation of the FeS precipitate.

Hence, ionically;

Fe^2+(aq) + S^2-(aq) --------> FeS(s)

8 0

3 years ago

3. Does the siren of a moving police car seem to change pitch to the

FinnZ [79.3K]

Answer:

As the police car moves towards them, the pitch of the police car's siren goes up because the sound waves get closer together in front of the police car. When the police car moves away from the person, the pitch goes down because the waves spread out behind the police and that makes the frequency go down.

Explanation:

4 0

3 years ago

If an atom contains more electrons than protons, it is

Ray Of Light [21]

Answer:

If an atom has the same number of electrons as protons, it is a neutral atom.

Explanation:

8 0

3 years ago

What would be the change in pressure in a sealed 10.0 l vessel due to the formation of n2 gas when the ammonium nitrite in 2.40

larisa86 [58]

The change in pressure in a sealed 10.0L vessel is 5.28 atm

calculation

The pressure is calculated using the ideal gas equation

That is P=n RT

where;

P (pressure)= ?

v( volume) = 10.0 L

n( number of moles) which is calculated as below

write the equation for decomposition of NH₄NO₂

NH₄NO₂ → N₂ +2H₂O

Find the moles of NH₄NO₂

moles = molarity x volume in liters

= 2.40 l x 0.900 M =2.16 moles

Use the mole ratio to determine the moles of N₂

that is from equation above NH₄NO₂:N₂ is 1:1 therefore the moles of N₂ is also =2.16 moles

R(gas constant) =0.0821 l.atm/mol.K

T(temperature) = 25° c into kelvin = 25 +273 =298 K

make p the subject of the formula by diving both side by V

P = nRT/V

p ={ (2.16 moles x 0.0821 L.atm/mol.K x 298 K) /10.0 L} = 5.28 atm.

3 0

3 years ago

Read 2 more answers

The above structure exhibits three rings. Identify which of the rings are aromatic. Enter the numbers in ascending order separat

sertanlavr [38]

Answer:

The aromatic ringsare the number 1 and 2.

Identify which lone pairs are participating in resonance (in aromatic rings).

One lone pair on the sulfur atom.

Explanation:

For a compound to be aromatic it has to comply with Hückel's Rule, which says that the quantity of electrons in the pi orbitals, has to be a multiple of

4n + 2

for n = 0, 1, 2, 3.

5 0

3 years ago

Compost from vegetable peelings can be used as plant fertilizer. * a. reduce b. resuse c. recycle d. recover​

Compost from vegetable peelings can be used as plant fertilizer. * a. reduce b. resuse c. recycle d. recover