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Elis [28]
3 years ago
10

CAN SOMEONE PLS HELP ITS A VERY IMPORTANT GRADE PLS HELP ASAP

Chemistry
1 answer:
hjlf3 years ago
3 0
I believe the answer is respiratory bc of how blood exchange works in the body w the circulatory system. None of the other answers make sense either
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Help please?!??!??!?!?!
GalinKa [24]

Answer:

A

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When atoms combine, the force of attraction that holds them together is a(
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Electrostatic, meaning the attraction from one's positive nucleus is to the negative electrons of the other atom and vis versa.
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What is the definition of chemistry
Neporo4naja [7]

Answer:

the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances

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5 0
3 years ago
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Diamond and graphite are two crystalline forms of carbon. In which form are the bonds between the C atoms arranged at tetrahedra
Fynjy0 [20]

Answer:

The answer is letter A. Diamond

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3 0
3 years ago
47.0ml of a HBr solution were titrated with 37.5ml of a 0.215M LiOH solution to reach the equivalence point. what is the molarit
faltersainse [42]

Hello!

The molarity of the HBr solution is 0,172 M.

Why?

The neutralization reaction between LiOH and HBr is the following:

HBr(aq) + LiOH(aq) → LiBr(aq) + H₂O(l)

To solve this exercise, we are going to apply the common titration equation:

M1*V1=M2*V2

M1=\frac{M2*V2}{V1}= \frac{0,215 M * 37,5 mL}{47 mL}=0,172 M

Have a nice day!

4 0
4 years ago
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