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Oksanka [162]
3 years ago
6

Help plz i need it my mom is mad at me for not knowing this

Chemistry
1 answer:
ohaa [14]3 years ago
5 0
Lol ok ill help the answer is true and she SHOULDNT be mad at you
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Fish, amphibians, reptiles, birds, and mammals have similar embryos. They all start with gill slits. Fish and some amphibians gr
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Answer:

Birds

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5 0
2 years ago
What volume of 10,0 M H2SO4 is required to prepare 4.0 L of 0.50 M H2SO4?
Evgesh-ka [11]

Answer: A)  0.20 L

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the neutralization law,

M_1V_1=M_2V_2

where,

M_1 = molarity of stock H_2SO_4 solution = 10.0 M

V_1 = volume of stock H_2SO_4   solution = ?

M_2 = molarity of dilute H_2SO_4  solution = 0.50 M

V_2 = volume of dilute H_2SO_4  solution = 4.0 L

10.0\times V_1=0.50\times 4.0

V_1=0.20L

Therefore, the volume of 10.0 M H_2SO_4 solution needed to prepare 4.0 L of 0.50 M H_2SO_4 is 0.20 L

8 0
2 years ago
If eggs are so fragile, how do they actually protect the growing bird?​
Step2247 [10]

Although birds' eggs appear to be fragile, they are in fact extremely robust. The oval shape applies the same rules of engineering as an arched bridge; the convex surface can withstand considerable pressure without breaking.

6 0
3 years ago
What is the use of the crystallisation process?
ioda
  •  to obtain pure salt from seawater. 
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5 0
2 years ago
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How is thermal energy transferred between two objects that are at different temperatures?
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Answer:

heat flows from the object that has more thermal more energy to the object with less thermal energy

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