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Olegator [25]
3 years ago
14

Consider the chemical equation below.

Chemistry
2 answers:
irina1246 [14]3 years ago
8 0

Answer is: A. H⁺ + OH⁻ → H₂O.

Balanced chemical reaction:

Mg(OH)₂ + 2HNO₃ → Mg(NO₃)₂ + 2H₂O.

Ionic reaction:

Mg²⁺ + 2OH⁻ + 2H⁺ + 2NO₃⁻ → Mg²⁺ + 2NO₃⁻ + 2H₂O.

Cancel all species that appear on both sides of the equation to get net ionic reaction.

Net ionic reaction: 2OH⁻ + 2H⁺ → 2H₂O or OH⁻ + H⁺ → H₂O;

Aleks [24]3 years ago
6 0
I would say A but then again im not too sure so hope that makes it easier to somehow
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How many moles of xenon trioxide are present in 1. 69 grams of this compound.
Vadim26 [7]

Answer:

0.00944

Explanation:

Xenon mass number on the periodic table: 131.29

Oxygen mass number: 16.00

Add them to find the molar mass of xenon trioxide: 131.29+3(16) = 179.29g/mol

Convert this to moles

1.69g * \frac{mol}{179.29g} = 0.00944mol

3 0
2 years ago
HCl + Fe + ____ + H²
mezya [45]

Answer:

This is a correct answer. 2HCL + Fe = FeCl2 + H2

8 0
1 year ago
The periodic table of the elements lists the elements in order of increasing atomic number. Each element has its own unique squa
Vesna [10]

Answer:

A) They all have 12 protons.

Explanation:

Magnesium has an atomic number of 12 which means it has 12 protons. All Magnesium atoms have 12 protons, the neutrons however may differ which produces things called isotopes where the atoms have same protons but neutrons change.

Keep in mind the atomic number is unique to each element, so 12 atomic number will always be Magnesium, 1 will always be Hydrogen and so on.....

6 0
2 years ago
How many moles of calcium nitrate could be produced from 8.64 moles of calcium hydroxide
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Explanation:

3 0
3 years ago
The mass of a proton is 1.00728 amu andthat of a neutron is 1.00867 amu. What is the binding energy pernucleon (in J) of a Co nu
andreyandreev [35.5K]

Answer:

The binding energy per nucleon = 1.368*10^-12  (option D)

Explanation:

<u>Step 1:</u> Data given

The mass of a proton is 1.00728 amu

The mass of a neutron is 1.00867 amu

The mass of a cobalt-60 nucleus is59.9338 amu

Step 2: Calculate binding energy

The mass defect = the difference between the mass of a nucleus and the total mass of its constituent particles.

Cobalt60 has 27 protons and 33 neutrons.

The mass of 27 protons = 27*1.00728 u = 27.19656 u

The mass of 33 neutrons = 33*1.00867 u = 33.28611 u

Total mass of protons + neutrons = 27.19656 u + 33.28611 u = 60.48267 u

Mass of a cobalt60 nucleus = 59.9338 amu

Mass defect = Δm = 0.54887 u

ΔE =c²*Δm

ΔE = (3.00 *10^8 m/s)² *(0.54887 amu))*(1.00 g/ 6.02 *10^23 amu)*(1kg/1000g)

Step 3: Calculate binding energy per nucleon

ΔE = 8.21 * 10^-11 J

8.21* 10^-11 J / 59.9338 = 1.368 *10^-12

The binding energy per nucleon = 1.368*10^-12  (option D)

3 0
3 years ago
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