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Lemur [1.5K]
3 years ago
11

8. How would you describe kelp? (2 points)

Chemistry
1 answer:
inna [77]3 years ago
5 0

I think the closest correct answer, based on the given options, is 8. a plant that grows deep in the ocean9. dominant predators, eat other organisms for energy
Thank you for your question. Please don't hesitate to ask in Brainly your queries.  
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An aluminum cylinder has a radius of 3.2 cm and a length of 8.6 cm. What is the mass of the aluminum cylinder if aluminum has a
Hatshy [7]

Answer:

750g of Aluminum

Assuming 8.6 cm lenth is the height of the cylinder. The volume of a cylinder is: V = \pi*r^2*h

V = 3.14cm x 10.24cm x 3.6cm

V = 280cm^3

Now density = mass/volume

2.7g/cm^3 = mass/280cm^3

2.7g/cm^3 x 280cm^3 = mass/<u>280cm^3</u> x <u>280cm^3</u>

= 750g of Aluminum

5 0
2 years ago
A 250. cm3 sample of neon is collected at standard temperature and pressure. Assuming the volume remains constant, what would be
Olenka [21]

Answer:

The answer is 118 kPa.

Explanation:

3 0
2 years ago
What do I mean by Water table in Water cycle
Lina20 [59]

Answer: -

After rain fall occurs, water accumulates .

This water is called ground water. This water slowly flows under the ground through the pore spaces in the soil. The water continues to go under the soil till it reaches a certain point where it can no longer go down.

In this region the water slowly accumulates forming a water reservoir called aquifer. The aquifer is a place under the soil which is saturated with water. The upper surface of this zone of saturation is called the water table.

7 0
2 years ago
Determine the numbers of atoms in each of the following 5.40 g B 0.250 mol k 0.0384 mol k 0.02550 g pt 1.00 x 10^-10 g Au,
Pani-rosa [81]
The answers are the following:
1. 3.01 x 10^23 atoms B
solution: (5.40/10.81)(6.022x10^23) 
<span>2. 1.51 x 10^23 atoms S
</span>solution:<span> (.250)(6.022x10^23) </span>
<span>3. 2.31 x 10^22 atoms K
</span>solution:<span> (.0384)(6.022x10^23) </span>
<span>4. 7.872 x 10^19 atoms Pt
</span>solution:<span> (.02550/195.08)(6.022x10^23) </span>
5. 3.06 x 10^11 atoms Au
solution: (1.00x10^-10/196.97)(6.022x10^23)
8 0
3 years ago
Read 2 more answers
In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. Which postulate of ki
ipn [44]

The kinetic energy of gas particles depends on temperature. Greater the temperature higher will be the average kinetic energy

Kinetic energy is related to the temperature as:

KE = 3/2 kT

where k = Boltzmann constant

T = temperature

In the given example, since the temperature of O2 gas is maintained at room temperature, the average KE will also remain constant.

The fifth postulate of the kinetic molecular theory which states that the temperature of the gas depends on the average KE of the particles of the gas explains the above observation.

6 0
3 years ago
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