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Leni [432]
3 years ago
12

__H₂ + __ O₂ → __ H₂O What type of reaction is above:

Chemistry
1 answer:
Ilia_Sergeevich [38]3 years ago
5 0

Answer:

2H2 + O2 --> 2H2O

Explanation:

This should be correct

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Gennadij [26K]

Answer:

b. k+

Explanation:

4 0
3 years ago
The modern periodic table is arranged in order of increasing. true or false
qaws [65]

Answer:

Increasing atomic number - True

Explanation:

The modern table is based on Mendeleev’s table, except the modern table arranges the elements by increasing atomic number instead of atomic mass.

The Atomic number is the number of protons in an atom, and this number is unique for each element. For example, Hydrogen has an atomic number of 1, Calcium has an atomic number of 20.

In the modern periodic table the elements are further arranged into:

- rows, called periods, in order of increasing atomic number. Elements in the same periods have the same number of shells.

- vertical columns, called groups, where the elements have similar properties. Elements in the same group has the same number of valency (outermost number of electrons)

4 0
3 years ago
(20 Points) Which definition of "coarse" matches its use in the phrase "coarse focus?"
vlada-n [284]

Answer by YourHope:


Hi! :)


Which definition of "coarse" matches its use in the phrase "coarse focus?"


A) "rough in texture"


Have a BEAUTIFUL day~

7 0
3 years ago
Read 2 more answers
a gas chamber is filled with four gases. When a small opening is made in the gas chamber you expect which gas to escape last hyd
Nimfa-mama [501]
I really don’t know the answer, please help this kiddo with his question
8 0
3 years ago
On the following chemical equation, label the acid, the base, the
beks73 [17]

Answer:

HX (aq)    +     H₂O (l)  ⇄      H₃O⁺ (aq)    +     X⁻ (aq)  

Acid                  Base          Conj. acid          Conj. base  

Explanation:

The equation is:

HX (aq) + H₂O (l)  ⇄   H₃O⁺ (aq) + X⁻ (aq)

This is the typical equilibrium for a weak acid. It would complete if we notice the Ka.

HX (aq) + H₂O (l)  ⇄   H₃O⁺ (aq) + X⁻ (aq)    Ka

1 mol of hypothetic HX acid react to 1 mol of water in order to release a proton and make hydronium and generate the X⁻ anion.

HX will be the acid, in this case a weak one and water will be the base. Water is able to accept a proton to make itslef hydronium

Hydronium is the conjugate acid.

The X⁻ will be the conjugate strong base.

This ion can generate the acid form again, that's why it is strong, because it can make hydrolisis.

X⁻ (aq)  +  H₂O (l)  ⇄  HX (aq) +  OH⁻(aq)     Kb

In this case, the anion will be the conjugate base which it takes a proton from water (acid form) to make a conjugate acid, the HX and a conjugate base, OH⁻

3 0
3 years ago
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