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MA_775_DIABLO [31]
3 years ago
13

Which of the following is not true of a scientific theory?

Chemistry
1 answer:
Furkat [3]3 years ago
3 0

Answer: a,b

Explanation: because a scientific theory is something that been thought of and tested multiple times.

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Classify each chemical compound listed in the table below.
prisoha [69]

Answer:

Please find attached the table of classification of the chemical compounds, created with Microsoft Word

Explanation:

The given compounds are;

H₂SO₃ is an acid which is known as sulfurous acid

When SO₂ is added to water, we have;

SO₂ + H₂O ⇄ HSO₃ + H⁺

Therefore, H₂SO₃ is ionic

2) HI which is known as hydrogen iodide, dissolves in water as follows

HI (g) + H₂O (l)  ⇄ H₃O⁺(aq) + I⁻(aq)

Therefore, HI is able to donate hydrogen ions therefore, it is both acidic and ionic

3) KI is a salt of the alkali metal, potassium, and iodine which is a group 7 element such that it formed by the transfer of electrons from potassium to iodine making it an ionic compound

KI forms a slightly alkaline solution

4) NaClO₃ comprises of the ionic combination of sodium and chlorate ions which dissolves in water as follows;

NaClO₃ → Na⁺(aq) + ClO₃⁻(aq)

Therefore, NaClO₃ is ionic

NaClO₃ is also a strong oxidizing agent, making a Br∅nsted acid

we have;  

Sulfurous acid (also Sulfuric(IV) acid, Sulphuric acid (UK), Sulphuric(IV) acid (UK)) is the chemical compound with the formula H2SO3. There is no evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase.[1] The conjugate bases of this elusive acid are, however, common anions, bisulfite (or hydrogen sulfite) and sulfite.

4 0
3 years ago
What type of bond results from the electrostatic attraction between positive and negative atoms?
Juliette [100K]
It is called a ionic bond
4 0
3 years ago
What would be the volume in liters of an ideal gas, if a 0.425 mole sample of the gas had a temperature of 900 degrees celsius a
Karo-lina-s [1.5K]
The ideal gas law relates the pressure (P), volume (V), number of moles (n), and temperature (T) of a given ideal gas through the equation,

                                 PV = nRT 

If we are to determine the volume of the gas, we derive the equation such that it takes the form of,
                                 V = nRT/P

Substituting,
             V = (0.425 mol)(0.0821 L.atm/mol.K)(900 + 273 K) / 3 atm

                            V = 13.64 L

Thus, the volume of the ideal gas is approximately 13.64 L. 
5 0
3 years ago
A compound consists of 18.96 g carbon, 5.53 g hydrogen, and 11.06 g nitrogen
Anna71 [15]

Explanation:

Kevlar is the high-strength polymer material. It has the following composition: 70.58% carbon, 11.76% nitrogen, 4.23% hydrogen, and 13.43% oxygen.

6 0
3 years ago
The common ion effect for ionic solids (salts) is to decrease the solubility of the ionic compound in water significantly. Expla
MrMuchimi

Answer:

Explanation has been given below.

Explanation:

Let's consider solubility equilibrium of an ionic insoluble compound e.g. BaSO_{4}

BaSO_{4}\rightleftharpoons Ba^{2+}+SO_{4}^{2-}

Equilibrium constant of this solubility equilibrium is represented in terms of solubility product (K_{sp}) which is expressed as-

K_{sp}=[Ba^{2+}][SO_{4}^{2-}]

Now, if we add an ionic salt e.g. Na_{2}SO_{4} with a common ion SO_{4}^{2-} then concentration of SO_{4}^{2-} increases.

But, at a constant temperature, K_{sp} is constant.

Therefore, to keep K_{sp} constant, excess amount of SO_{4}^{2-} will combine with free Ba^{2+} ion in solution and produce BaSO_{4}.

Hence, as a whole, solubility of BaSO_{4} decreases.

3 0
3 years ago
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