Answer:
Examples of collective animal behavior include: Flocking birds. Herding ungulates. Shoaling and schooling fish.
Explanation:
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Q=m°C<span>ΔT
=(500g) x (1 cal/g.</span>°C) x (48°C-21°C) = 13500 cal
13500 cal / 1000 = 13.5 kcal
<span>"What is the caloric value (kcal/g) of the french fries?"
13.5 kcal/ 2.5 g = 5.4 kcal/g</span>
Answer: Because acetic acid in solution exists as a mixture of acetic acid & dissociated acetic acid (acetate)
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0.448 moles of ions will form when a 42.66-gram sample of magnesium chloride is dissolved in water (option A).
<h3>How to calculate number of moles?</h3>
According to this question, when magnesium chloride (MgCl2) dissolves in water, it dissociates into magnesium ions and chloride ions as follows:
MgCl2(aq) ⟶ Mg2+(aq) + Cl−(aq)
However, if a 42.66-gram sample of magnesium chloride is dissolved in water, this means that 42.66g/molecular mass of MgCl2 will be the number of moles of the ionic products.
molecular mass of MgCl2 = 95.3g/mol
moles = 42.66g ÷ 95.3g/mol = 0.448mol
Therefore, 0.448 moles of ions will form when a 42.66-gram sample of magnesium chloride is dissolved in water.
Learn more about moles at: brainly.com/question/26416088
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Answer:
C. 1:30
Explanation:
The toy car is .5 feet long and the actual car is 15 feet long
This gives you a ratio of
.5:15
Now for everything you have to remember this
.5:15
=1:30
=2:45
=3:60
C is the only answer that matches any of the ratios above.
Even if you went farther in the ratios none of them would match this ratio.
Hope this helped.
=)