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fenix001 [56]
3 years ago
14

The arms of humans and the flippers of dolphins have a similar bone structure. So, they’re _______ organs. The legs of a kangaro

o and the legs of a jumping spider allow both organisms to jump. However, spiders are invertebrates, and kangaroos are vertebrates. This difference makes their legs ______ structures.
1)A. analogous B. homologous C. vestigial
2)A. analogous B. homologous C. vestigial
Chemistry
1 answer:
vfiekz [6]3 years ago
4 0
1. B. homologous
2. A. analogous
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Hello,

They both emits mainly gamma rays. Which makes the emission a transition between the levels!
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In the following reaction, when the equation is correctly balanced, what is the correct coefficient for sodium chloride? Pb(NO3)
11Alexandr11 [23.1K]

Answer: Thus the correct coefficient for sodium chloride is 2.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical reaction is:

Pb(NO_3)_2(aq)+2NaCl(aq)\rightarrow PbCl_2(s)+2NaNO_3(aq)

Thus the correct coefficient for sodium chloride is 2.

7 0
3 years ago
If the average speed of a helium atom at a certain temperature is 1230. m/s, what is the speed in miles per hour? (1mi =1609m)
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In order to do conversion on these types of problems. <span>
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4 years ago
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