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posledela
3 years ago
13

Which of the following shows both the correct formula and correct name of an acid?

Chemistry
2 answers:
Dimas [21]3 years ago
7 0

Answer is: C. H3PO4, phosphoric acid.

A) HClO₂ is chlorous acid.

Chlorous acid is weak inorganic acid. In this acid, chlorine has oxidation number +3.

B) HNO₂ is nitrous acid.

Nitrous acid is a weak monobasic acid.  In this acid, nitrogen has oxidation number +3.

D) HI is hydroiodic acid.

Hydroiodic acid is a highly acidic aqueous solution of hydrogen iodide. In this acid, iodine has oxidation number -1.

Kaylis [27]3 years ago
4 0

Answer:

Explanation:

1. hydrogen ions

2. H3OP4 phosphoric acid

3. H2SO3

4. like ionic compounds

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Melting of ice is a spontaneous reaction at room temperature and pressure because melting is accompanied by _____.
ki77a [65]

Answer:

An increase in entropy

Explanation:

In ice, the molecules are very well ordered because of the H-bonds. As ice melts, the intermolecular forces are broken (requires energy), but the order is interrupted (so entropy increases). Water is more random than ice, so ice spontaneously melts at room temperature.

Just think about this rationally. Melting ice (or anything) will require heat put in (this is called the latent heat of fusion), so you automatically know that the change in enthalpy is going to be positive. In order to make the reaction spontaneous, delta G, the Gibbs free energy has to be negative. So now look at the formula Delta(G) = Delta(H) - T*Delta*(S). If you know that g is negative, and H is positive, then it is only possible if -T*Delta(S) is negative. If that is positive, then Delta(S) has to be positive. So theres your answer :). An increase in entropy

4 0
3 years ago
1. Which graph shows the melting of crystalline solids? Explain your reasoning.
madreJ [45]
(1) The melting of a crystalline solid is best depicted by the second graph. This is because, the second graph shows a horizontal line which means that for a while there was no change in temperature. This zone is the latent heat of fusion. 

(2) The first graph shows the graph of a solid that is just heated but does not experience phase change. However, the second graph shows a solid that changes phase (from crystal/solid to liquid). 
8 0
3 years ago
A molecule of hydrogen gas is made up of pairs of hydrogen atoms in which each atom shares its electron to form a(n) ____.
andreyandreev [35.5K]

Answer:

covalent bond

Explanation:

a covalent bond forms when electrons are shared between two nonmetals

plz mark as the brainliest

6 0
2 years ago
Balance the equation NaHCO3(s)....<br> Please help!!<br> Question #1
ddd [48]

Answer:

NaHCO3 → H2O + CO2 + Na2CO3

Explanation:

7 0
2 years ago
A cyclopropane-oxygen mixture is used as an anesthetic. If the partial pressure of cyclopropane, n the mixture is 330 mm Hg and
Thepotemich [5.8K]
b is the correct answer
4 0
3 years ago
Read 2 more answers
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