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3 years ago

Place the events of a fight or flight situation in the correct order.

Chemistry

2 answers:

Tomtit [17]3 years ago

8 0

Answer:

you see le bear

you brain sends signals

your heart and lungs receive said signals

spring to action

Paraphin [41]3 years ago

7 0

Answer:

fight

flight

fight

Explanation:

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Which of the following are isotopes, choose all that apply.

Juliette [100K]

Answer:

Element X with atomic number 10 and atomic mass 21

Element Z with atomic number 10 and atomic mass 22

Explanation:

Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the number of neutrons in their various nuclei.

Isotopes of an element have the same electronic configuration.
They share the same chemical properties
They only differ in their masses.

So, Element X and Z with atomic number 10 which is their number of electrons are isotopes. Their mass number, 21 and 22 differs.

4 0

3 years ago

Subject: Chemistry<br><br><br>whoever does this right will give the brainliest <3)

Andru [333]

Answer:

1 A

3 main types of bond are

Ionic bond ( formed due to complete transfer of electron between atoms(

Covalent bond ( formed by mutual sharing of electron)

Metalic bond ( present in the metals due to mobile electrons)

1 B bond in CaO is ionic bond formation in attached image

1 C hydrogen bond with nitrogen is covelent NH3 ammonia is formed because a bond between two non metals is expected to be covalent

More their electronegativity difference between hydrogen and nitrogen is less than 1.7 that makes it covalent

Explanation:

4 0

3 years ago

Read 2 more answers

Water molecules are polar because the?

disa [49]

Answer:

Water (H2O) is polar due to the bent shape of the molecule. The shape means most of the negative charge from the oxygen is one one side of the molecule and the positive charge of the hydrogen atoms is on the other side of the molecule. This is an example of polar covalent chemical bonding.

Hope this helps!

6 0

3 years ago

Read 2 more answers

Valeric acid, HC5H9O2 (Ka = 1.5 ✕ 10−5), is used in the manufacture of magnesium valerate, a nerve-calming agent. What is the hy

Studentka2010 [4]

Answer:

$[H^+]=0.00332M$