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Leviafan [203]
4 years ago
8

Help fast asap

Chemistry
2 answers:
Dmitriy789 [7]4 years ago
7 0

The cladogram of the kingdom Animalia shows the relationship of selected animals based on their shared anatomical features. The black numbered squares represent features that are critical for forming each branch in the animal kingdom. Square one represents a dorsal nerve cord, which means the animals in all the branches have a dorsal nerve cord.

Which numbered square would represent the trait "mammary glands

Answer - C. 5


kogti [31]4 years ago
4 0

Your answer is c

hope it helps

:)

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Cold packs are used to treat minor injuries. Some cold packs contain NH4NO3(s) and a small packet of water at room temperature b
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These types of reactions are called endothermic reactions. This is when the system absorbs the heat from the surrounding. In this case, the system is the chemical reaction and the environment is the direct vicinity of the chemical reaction. You notice that the pack becomes cold because heat from the surrounding is being absorb. 

The bonds involved in this substance includes ionic bonding and polar covalent. 
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At which point does the roller coaster have very little kinetic energy and very little potential energy ?
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Compared to the boiling point of 1.0 M KCl(aq) at standard pressure, the boiling point of 1.0 M CaCl2(aq) at standard pressure i
astra-53 [7]
Lower as KCl has ionic bonding which is less stable than CaCl2s covalent bond which requires less energy.
6 0
3 years ago
Predict the product 1-bromo propane is treated with sodium metal
Alja [10]

When 1-bromo propane is reacted with sodium metal, the propane and sodium bromide are formed.

  • Propane and sodium bromide are produced when the 1-bromo propane is reacted with sodium metal.
  • The Bromine which is present in the 2-bromopropane is removed through hydrogenation and combines with the sodium metal which results in the production of propane and sodium bromide.
  • So we can conclude that propane and sodium bromide are produced when the 1-bromo propane is reacted with sodium metal.

Learn more about 1-bromo propane here: brainly.com/question/25597694

Learn more: brainly.com/question/25952418

8 0
2 years ago
If your end product is 200.0 g KMnO4 how much KOH did you start with?
aniked [119]

Answer:

m_{KOH}= 142.0gKOH

Explanation:

Hello there!

In this case, according to the following chemical reaction we found on goo gle as it was not given:

2MnO_2+4KOH+O_2\rightarrow 2KMnO4+2KOH+H_2

Whereas we can see a 2:4 mole ratio of potassium permanganate product to potassium hydroxide reactant with molar masses of 158.03 g/mol and 54.11 g/mol respectively. In such a way, by developing the following stoichiometric setup, we obtain the mass of KOH to start with:

m_{KOH}=200.0gKMnO_4*\frac{1molKMnO_4}{158.03gKMnO_4}*\frac{4molKOH}{2molKMnO_4}  *\frac{56.11gKOH}{1molKOH}\\\\m_{KOH}= 142.0gKOH

Best regards!

8 0
3 years ago
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