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andriy [413]
3 years ago
6

How do bacteria in the guts of cows help the cows to digest the grass they eat?

Chemistry
1 answer:
Andreyy893 years ago
3 0
A cow's<span> digestive system is quite different from that of humans. </span>Cows eat grass, hay and other plant material that contain hard-to-digest<span> cellulose. To cope with this </span>they<span> have a large stomach with four compartments, with the largest being the rumen.</span>
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You make some iced tea by dropping 325 grams of ice into 500.0 mL of warm tea in an insulated pitcher. If the tea is initially a
lora16 [44]

Explanation:

The given data is as follows.

      Mass of ice dropped = 325 g

      Initial temperature = 30^{o}C = (30 + 273) K = 303 K

     Final temperature = 0.0^{o}C = (0 + 273) K = 273 K

Now, using density of water calculate the mass of ice as follows.

             m_{ice} = \frac{500 ml \times 1.0 g/mol}{1 ml}

                        = 500 g

As the relation between heat energy, specific heat and change in temperature is as follows.

                 Q = m \times C_{p} \times dT

                      = \frac{500 g}{18 g/mol} \times 75.3 J/K/mol \times (303 - 273)K

                      = 62750 J

Also, relation between heat energy and latent heat of fusion is as follows.

                       Q = m L

              = \frac{325 g}{18 g/mol} \times 6 \times 10^{3}

             = 108300 J

Therefore, we require \frac{325 g}{18 g/mol} J heat but we have 40774.95 J.

So,     mass_{ice} = \frac{m \times C_{p} \times (T_{f} - T_{i})}{\Delta H_{f}}

                      = \frac{62750 J}{333}

                      = 188.4 g

Hence, the mass of ice = 325 g - 188.4 g

                                        = 137 g

Therefore, we can conclude that 137 g of ice will still be present when the contents of the pitcher reach a final temperature.

5 0
3 years ago
The largest pieces being dragged along the streambed are undergoing the process called ________. pushing saltation traction susp
lianna [129]

Answer:

saltation

Explanation:

  • Saltation is the transportation of particles by fluids such as by winds and water.  It takes place when loose matter is removed from the sea bed and gets carried by the fluid back to the surface.
  • Examples include pebbles, sand, and soil. Saltation layers can form during avalanches.
8 0
3 years ago
Guide Questions:
shtirl [24]

Answer:

Kindly check explanation

Explanation:

The force applied is directly proportional to the distance moved by an object, the larger the applied force, the greater the distance moved.

a = f/m

a = acceleration ; f = applied force ; m = mass

From the relation, we can see that acceleration is directly proportional to force applied.

The ball will travel farthest with the greatest applied force while, nearest distance will be attained with the smallest applied force.

The distance covered is affected by both the mass of the object and the applied force

7 0
3 years ago
Why does spda fizz when you put a paper straw in it?
Zanzabum
The paper in the straw makes the soda fizz.
3 0
3 years ago
What does mechanical digestion mean ?
Alex787 [66]

Answer:

Explanation:

Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion. The role of chemical digestion is to further degrade the molecular structure of the ingested compounds by digestive enzymes into a form that is absorbable into the bloodstream.

4 0
3 years ago
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