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3 years ago

In composting, gardeners allow a pile of plant material such as dead leaves to decay. Composting is a form of combustion.

Chemistry

1 answer:

maks197457 [2]3 years ago

8 0

Answer:

This is true

Explanation:

Because it mixes in with the earth making the earth more suitable for gardening and/or farming.

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There are 6 oxygen atoms in a half dozen water (h2o) molecules. how many hydrogen atoms are in the same half dozen molecules?

dlinn [17]

There are 12 hydrogen atoms in 6(H2O)

5 0

4 years ago

Two systems with heat capacities 19.9 J mol-1 K-1 and 28.2 ] mol 1 K-1 respectively interact thermally and come to an equilibriu

MAVERICK [17]

Answer : The initial temperature of system 2 is, $19.415^oC$

Explanation :

In this problem we assumed that the total energy of the combined systems remains constant.

$-q_1=q_2$

$m\times c_1\times (T_f-T_1)=-m\times c_2\times (T_f-T_2)$

The mass remains same.

where,

$C_1$ = heat capacity of system 1 = 19.9 J/mole.K

$C_2$ = heat capacity of system 2 = 28.2 J/mole.K

$T_f$ = final temperature of system = $30^oC=273+30=303K$

$T_1$ = initial temperature of system 1 = $45^oC=273+45=318K$

$T_2$ = initial temperature of system 2 = ?

Now put all the given values in the above formula, we get

$-19.9J/mole.K\times (303-318)K=28.2J/mole.K\times (303-T_2)K$

$T_2=292.415K$

$T_2=292.415-273=19.415^oC$

Therefore, the initial temperature of system 2 is, $19.415^oC$

8 0

4 years ago

For the following reaction, the equilibrium constant Kc is 0.80 at a certain temperature. If the concentration of NO(g) and NOBr

velikii [3]

Answer:

[Br₂] = 1.25M

Explanation:

2NO (g) + Br₂ (g) ⇄ 2NOBr (g)

Eq 0.80M ? 0.80M

That's the situation told, in the statement.

Let's make the expression for Kc

Kc = [NOBr]² / [Br₂] . [NO]²

Kc = 0.80² / [Br₂] . [0.80]²

0.80 = 1 / [Br₂]

[Br₂] = 1 / 0.80 → 1.25

4 0

3 years ago

Which two properties are explained by the pool-of-shared-electrons model for metals?

Svetllana [295]

I believe it is C but if not that A

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3 years ago

what is the color of indicator for battery acid, water, vinegar, soda pop, shower (ammonia) cleaner and liquid drain cleaner

aksik [14]

Well the color for battery acid would be purple due to the acidity in the battery acid but to lower the levels add some gypsy stone and it can lower it

3 0

2 years ago