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Citrus2011 [14]
3 years ago
10

Human organ systems work together in many ways. Which statement accurately explains the relationship between two body systems?A.

the excretory system regulates the temperature of the integumentary system.B. The skeletal system delivers nutrients absorbed by the endocrine system.C. The digestive system delivers oxygen absorbed by the respiratory system.D. The nervous system regulates the movement of the muscular system.
Chemistry
1 answer:
melomori [17]3 years ago
4 0

Answer:

Option D. The nervous system regulates the movement of the muscular system.

Explanation:

The nervous system regulates the movement of the muscles as they receive signals from both the brain and nerve cells

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What material makes up ash and pumice?
slamgirl [31]

Pumice rocks are formed due to the air that is trapped in between the rocks, a body of magma spurting out with dissolved gas under pressure. As the magma cracks through the Earth’s surface, the sudden pressure drop causes the gas to come out of the solution. The flash of gas form the vent slices the magma and blows it out as a molten lather. The lather hastily solidifies as it flies into the air and falls back to Earth as pieces of pumice.

7 0
3 years ago
A 35.0 mL solution of Sr(OH)2 is neutralized with 29.5 mL of 0.200 M
11Alexandr11 [23.1K]

Answer:

0.48M

Explanation:

Mark brainliest please

8 0
3 years ago
1 If 5.80 L of gas is collected at a pressure of 92.0 kPa, what volume will the same gas occupy at 101.3 kPa if the temperature
Anni [7]

Answer:

The volume that the same gas will occupy at 101.3 kPa if the temperature is kept constant is 5.27 L.

Explanation:

As the volume increases, the particles (atoms or molecules) of the gas take longer to reach the walls of the container and therefore collide with them less times per unit of time. This means that the pressure will be lower because it represents the frequency of collisions of the gas against the walls. In this way pressure and volume are related, determining Boyle's law that says:

"The volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure"

Boyle's law is expressed mathematically as:

P * V = k

Now it is possible to assume that you have a certain volume of gas V1 that is at a pressure P1 at the beginning of the experiment. If you vary the volume of gas to a new value V2, then the pressure will change to P2, and it will be fulfilled:

P1 * V1 = P2 * V2

In this case, you have:

  • P1= 92 kPa
  • V1= 5.80 L
  • P2= 101.3 kPa
  • V2= ?

Replacing:

92 kPa* 5.80 L= 101.3 kPa* V2

and solving, you get:

V2=\frac{92 kPa* 5.80 L}{101.3 kPa}

V2= 5.27 L

<u><em>The volume that the same gas will occupy at 101.3 kPa if the temperature is kept constant is 5.27 L.</em></u>

4 0
3 years ago
What acid is car batteries?
Romashka-Z-Leto [24]

Answer:

sulfuric acid

Explanation:

When a battery is being discharged, the sulfuric acid in the electrolyte is being depleted so that the electrolyte more closely resembles water.

5 0
4 years ago
Read 2 more answers
The density of wind-packed snow is estimated to be 0.35 g/cm^3. A flat roof that is 35 by 43 feet has 28 inches of snow on it. H
xz_007 [3.2K]

Answer:

There are 76728.2 pounds of snow on the roof

Explanation:

To determine how many pounds of snow are on the roof,

First we will determine the mass of the snow in grams.

From the question,

Density of snow = 0.35 g/cm³

From

Density = Mass / Volume

To determine the mass, we will first find the volume.

From the question, a flat roof that is 35 by 43 feet has 28 inches of snow on it, that is, the height of the snow on the roof is 28 inches.

Area of the roof = 35 ft × 43 ft = 1505 ft²

Volume of the snow = Area of the roof × Height of the snow

Height of the snow = 28 inches

12 inches = 1 foot

∴ 28 inches = 28/12 feet = 2.3333 ft

Hence,

Volume of the snow = 1505 ft² × 2.3333 ft = 3511.62 ft³

Volume of the snow = 3511.62 ft³

This is the volume of the snow in cubic feet

Now, we will convert cubic feet (ft³) to cubic centimeter (cm³)

1 ft = 30.48 cm

and 1 ft³ = 30.48³ cm³ = 28316.84659 cm³.

If 1 ft³ =  28316.84659 cm³

∴ 3511.62 ft³ will be 3511.62 × 28316.84659 cm³ = 99438004.83 cm³

Hence, Volume of snow = 99438004.83 cm³

Now, we can determine mass of snow in grams

From

Density = Mass / Volume

Mass = Density × Volume

Mass = 0.35 g/cm³ × 99438004.83 cm³

Mass = 34803301.69 g

Now, we will convert the mass from grams to pounds

1 pound = 453.592 grams

If 453.592 grams = 1 pound

Then, 34803301.69 g will be 34803301.69 / 453.592 pounds = 76728.2 pounds

Hence, there are 76728.2 pounds of snow on the roof.

6 0
3 years ago
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