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SVETLANKA909090 [29]
4 years ago
10

Which parenting behavior does not increase the probability that offspring will survive? A. Producing milk to feed young B. Guard

ing young from predators C. Protecting young from cold weather D. Abandoning young before eggs are hatched 10 points
Chemistry
1 answer:
horsena [70]4 years ago
8 0
The answer would be D, abandoning young before eggs hatched, due to the fact that the eggs would probably fail to develop correctly as a result of improper care. The other choices would actually increase their chances of survival.
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1) Os-182 has a half-life of 21.5 hours. How many grams of a 10 g sample would have decayed after
Monica [59]

Answer:

1.25 g

Explanation:

.5^3 = 0.125

0.125*10 = 1.25 g

8 0
3 years ago
A 200.-milliliter sample of CO2(g) is placed in a sealed, rigid cylinder with a movable piston at 296 K and 101.3 kPa. Determine
bagirrra123 [75]

Answer:

The final volume of the sample of gas V_{2} = 0.000151 m^{3}

Explanation:

Initial volume V_{1} = 200 ml = 0.0002 m^{3}

Initial temperature T_{1} = 296 K

Initial pressure P_{1} = 101.3 K pa

Final temperature T_{2} = 336 K

Final pressure P_{2} =  K pa

Relation between P , V & T is given by

P_{1} \frac{V_{1} }{T_{1} } = P_{2} \frac{V_{2} }{T_{2} }

Put all the values in the above equation we get

101.3 (\frac{0.0002}{296} )= 152 (\frac{V_{2} }{336} )

V_{2} = 0.000151 m^{3}

This is the final volume of the sample of gas.

4 0
4 years ago
For the following reaction, the equilibrium constant Kc is 2.0 at a certain temperature. The reaction is endothermic. What do yo
jeyben [28]

Answer:

The correct answer is : 'the concatenation of NO will increase'.

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

If the temperature is increased, so according to the Le-Chatlier's principle , the equilibrium will shift in the direction where increase in temperature occurs.

2NOBr(g)\rightleftharpoons 2NO(g) + Br_2(g)

As, this is an endothermic reaction, increasing temperature will add more heat to the system which move equilibrium in the forward reaction with decrease in temperature. Hence, the equilibrium will shift in the right direction.

So, the concatenation of NO will increase.

7 0
4 years ago
The system containing all the muscles of the body especially those involved in movement CONSIST of the three types of muscle ske
Sunny_sXe [5.5K]
The muscular system is involved in movement and has skeletal, smooth, and cardiac muscles
3 0
3 years ago
A tennis ball is hit into the air with a racket. When is the ball’s kinetic energy the greatest? Ignore air resistance.
professor190 [17]

Answer:

E. just before it reaches the ground.

Explanation:

The "kinetic energy" refers to the energy<em> when an object moves or is in motion.</em> When the ball leaves the racket, it is considered to have a great amount of kinetic energy. However, this decreases as the ball reaches its maximum height, but the potential energy is at its highest. Upon falling down, its kinetic energy increases but its potential energy decreases.

<em>Provided that there's no air resistance,</em><em> the speed of falling is even faster for the ball because of gravity and nothing is slowing it down, </em>which means it will have a<u> maximum kinetic energy</u><u> just before it reaches the ground.</u>

7 0
3 years ago
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