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3 years ago

How many atoms of oxygen (O) are in one formula unit of Mg(NO3)2?

2 answers:

5 0

We may use the molecular formula of the compound to determine the number of oxygen atoms in one formula unit. The formula unit is:
Mg(NO₃)₂
Here, we can see that there are two nitrate ions in each mole, and each mole of nitrate ion contains three oxygen atoms. Thus, there are 6 oxygen atoms in each formula unit of magnesium nitrate.

dolphi86 [110]3 years ago

3 0

The molecular formula indicates the number of atoms of each element in the molecule.
Oxygen exists as molecules (diatomic molecules). The fundamental particles that make up a sample of Oxygen are pairs of atoms, rather than individual atoms.
You can count the number of atoms of each element in a chemical formula by multiplying the coefficient by the subscript, recognizing that those coefficients and subscripts that are not shown are equal to 1. So, in our case there are 6 atoms of oxygen.

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Calcium and bromine have formed a bond. Leading up to this, calcium gave up electrons. It was a(n) ____.

Ugo [173]

Answer:

It was a positive ion.

Explanation

In CaBr, ionic bond is present. When one of the atom loses electrons and gets positive charges and other atom gains electrons and become negative. As a result of positive and nagative charges , a ionic bond formed.

As in this case, Ca loses electrons and become positive ion while on the other hand bromide gets the electrons and become negative ion.

Note:

Electropositive atoms always loose electrons Like Ca while electronegative atoms always gain elelctrons like Br.

5 0

4 years ago

Read 2 more answers

If an atom has 10 protons and electrons how many of the electrons will be valence electrons?

Snezhnost [94]

Answer:

8 of the electrons will be valence electrons

Explanation:

7 0

2 years ago

Read 2 more answers

If a sample weighs 3500 mg, it is equivalent to : A) 35g B)0.0035kg C)3.5kg D)350g

Stels [109]

B) 0.0035 kg Hope this helps!

3 0

3 years ago

What are the properties of the aluminum in the can

Paul [167]

The properties of aluminium include low density and therefore low weight, high strength, superior malleability, easy machining, excellent corrosion resistance and good thermal and electrical conductivity are amongst aluminium's most important properties. Aluminium is also very easy to recycle.
Hope this helps:D
Have a great rest of a brainly day!

3 0

4 years ago

Identify whether each species functions as a Brønsted-Lowry acid or a Brønsted-Lowry base in this net ionic equation.CH3COO-+HCO

NARA [144]

Explanation :

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor

The given equilibrium reaction is,

$CH_3COO^-+HCO_3^-\rightleftharpoons CH_3COOH+CO_3^{2-}$

In this reaction, $CH_3COO^-$ and $HCO_3^-$ are act as Bronsted Lowry base and acid respectively and $CH_3COOH$ and $CO_3^{2-}$ are act as Bronsted Lowry acid and base respectively.

The formula of conjugate of $CH_3COO^-$ is, $CH_3COOH$

The formula of conjugate of $HCO_3^-$ is, $CO_3^{2-}$

7 0

3 years ago