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gregori [183]
3 years ago
14

Which of these is a base ? a.vinegar b.NaOH c.HNO3 d.HCI

Chemistry
2 answers:
aksik [14]3 years ago
8 0

A - Vinegar - Acid

B - NaOH- Base

C - HCL - Acid

D - HNO3 - Acid

NaOH is a base because when it is dissolved in water it dissociates into Na+ and OH- ions. When it had OH- ( hydroxyl ion ) ions, it automaticly is a base; thus, NaOH must be a base.

Hope this helps! :)

sergey [27]3 years ago
6 0

Answer:

B. NaOH

Explanation:

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Oxidation numbers is the right answer 
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What the different betwen observe and reference
NNADVOKAT [17]
Observe to to gather facts, by paying close attention towards what you are working on.

meanwhile, reference is the act or process on reaching to your conclusion, based on facts you already know .
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The electronegativity values of fluorine, oxygen, and hydrogen are compared in the table. Comparison of Electronegativity Elemen
Dvinal [7]

The hydrogen bonding in H₂O is stronger than that of HF

Explanation:

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  • The strength of hydrogen bonds depends on the how electronegative an atom is.
  • Electronegativity refers to the tendency of an atom to gain electrons.
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4 0
3 years ago
We must __________ forces to calculate net force if the forces are going in OPPOSITE directions.
Virty [35]

Answer:

subtract

Explanation:

To find the net force of two bodies going in opposite directions, we must subtract the forces this is because they are not additive forces.

  • The net force is the resultant force acting on a body.
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5 0
3 years ago
what is the balanced equation for the reaction of solid magnesium metal with oxygen gas to produce solid magnesium oxide
GaryK [48]

Answer:

2Mg + O₂ ⟶ 2MgO

Explanation:

Step 1. Start with the most complicated-looking formula (O₂?).

Put a 1 in front of it.

Mg + 1O₂ ⟶ MgO

Step 2. Balance O.

We have fixed 2 O on the left. We need 2O on the right. Put a 2 in front of MgO.

Mg + 1O₂ ⟶ 2MgO

Step 3. Balance Mg.

We have fixed 2 Mg on the right-hand side. We need 2 Mg atoms on the left. Put a 2 in front of Mg.

2Mg + 1O₂ ⟶ 2MgO

Every formula now has a coefficient. The equation should be balanced. Let’s check.

<u>Atom</u>  <u>On the left</u>  <u>On the righ</u>t

  Mg             2                  2

  O                2                  2

All atoms are balanced.

The balanced equation is

2Mg + O₂ ⟶ 2MgO

4 0
3 years ago
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