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leonid [27]
3 years ago
11

(2. Which of the following best describes humus?

Chemistry
1 answer:
Harlamova29_29 [7]3 years ago
6 0

Answer:

A. Decomposed organic matter

Explanation:

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How do scientists use sonar to study Earth’s oceans?
adoni [48]
A to map the ocean floor
7 0
3 years ago
Read 2 more answers
An unknown metal absorbs 61 J of heat, and its temperature increases by 29∘C. What is the heat capacity of the metal?
aniked [119]

Answer:

2.103 J/C

Explanation:

Quantity of heat = Heat Capacity * Temperature change

Heat Capacity = Quantity of heat / Temperature Change

Heat Capacity = 61/29

Heat Capacity = 2.103 J/C

3 0
3 years ago
If a balloon containing 3000 L of gas at 39 C and 99 k Pa rises to an altitude where the pressure is 45.5 kPa and the temperatur
mihalych1998 [28]

Answer:

The new volume of the balloon will be 6046.28 L

Explanation:

Initial pressure (P1) = 99 kpa

initial volume (V1) = 3000 L

Initial temperature = 39 C = 39 + 273 = 312 K

Final pressure (P2) = 45.5 kpa

Final temperature = 16 C = 16 +273 = 289K

Final volume = ????

To calculate the final volume using the general gas equation

                  P1 V1 / T1  = P2 V2 / T2

make V2 the subject of the formular

                   V2 = 99000 ×3000× 289 / 45500×312

                   V2 = 85833000 /14196

                     V2 = 6046.28 litres

5 0
3 years ago
Advantages and disadvantages of using tidal energy instead of non-renewable energy sources.​
Phantasy [73]

Advantages of using tidal energy:

-Environment-friendly

-A highly predictable energy source

-High energy density

-Operational and maintenance costs are low

-An inexhaustible source of energy

Disadvantages of using tidal energy:

-High tidal power plant construction costs.

-Negative influence on marine life forms.

-Location limits.

-The variable intensity of sea waves.

3 0
3 years ago
Question 10.
Katarina [22]
D should be the correct answer. Hope that helps.
3 0
3 years ago
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