Can someone please help me out with this ? very much would appreciate the help!

Scoring: Your score will be based on the number of correct matches minus the number of incorrect matches. There is no penalty fo

bonufazy [111]

Answer:

- Ammonium perchlorate: acidic, so its pH will be less than 7.

- Sodium fluoride: basic, so its pH will be greater than 7.

- Calcium chloride: neutral, so its pH will be approximately equal to 7.

- Calcium nitrate: neutral, so its pH will be approximately equal to 7.

Explanation:

Hello,

In this case, we can foresee whether the given bases are acidic, neutral or basic by knowing both the acid and base they come from. In such a way, if a strong acid reacts with a strong base, the resulting salt is neutral, next, if a strong acid reacts with a weak base the resulting salt is acidic and if a weak acid reacts with a strong base the resulting salt is basic. Therefore, we have:

- Ammonium perchlorate: it comes from ammonium hydroxide or ammonia that are weak bases and perchloric acid which is a strong acid, therefore the salt is acidic so its pH will be less than 7.

- Sodium fluoride: is comes from sodium hydroxide which is a strong base and hydrofluoric acid which is a weak acid, therefore the salt is basic so its pH will be greater than 7.

- Calcium chloride: it comes from calcium hydroxide and hydrochloric acid which are both strong, for that reason the resulting salt will be neutral so its pH will be approximately equal to 7.

- Calcium nitrate: it comes from calcium hydroxide and nitric acid which are both strong, for that reason the resulting salt will be neutral so its pH will be approximately equal to 7.

Best regards.

5 0

4 years ago

Approximately how much of the world’s oil and natural gas reserves are believed to be in the arctic?

Angelina_Jolie [31]

In 2009, the US Geological Survey estimated the Arctic may be home to 30% of the planet's natural gas reserves and 13% of oil.

7 0

3 years ago

Emily floats a note across a river to Dylan instead of directly passing it from her hand to Dylan's hand. If, in this scenario,

slega [8]

Answer: The Note

Explanation: Neurotransmitters are endogenous chemical substances that transmits signals through a NEUROMUSCULAR JUNCTIONS.

The signals are transmit from one NERVE CELL TO THE TARGET POINT such as Muscle cell,gland cell etc. Neurotransmissiom require the presence of synapse(the structure or medium through which neurosignals which can be an electrical or chemical signals to pass through).

8 0

3 years ago

Read 2 more answers

hich statement is true? A. An acid with a large pKa will be a better conductor of electricity than one with a smaller pKa. B. An

xz_007 [3.2K]

Answer:

$\boxed{\text{B is correct}}$

Explanation:

Kₐ and pKₐ are measures of the strength of an acid. For example,

HX + H₂O ⇌ H₃O⁺ + X⁻; Kₐ = 10¹⁰, pKₐ = -10

HA + H₂O ⇌ H₃O⁺ + A⁻; Kₐ = 10⁻¹⁰, pKₐ = 10

HX is a strong acid, because it has a larger Kₐ, that is, the position of equilibrium lies far to the right.

However, pKₐ is the negative logarithm of Kₐ, so HX has the smaller pKₐ.

Similarly, Ha is a weak acid, but it has the larger pKₐ.

Strong acid: Large Kₐ ⇔ Low pKₐ

Weak acid: Small Kₐ ⇔ High pKₐ

A is wrong. HA is a weak acid, so it produces only a few hydronium ions.

B is correct. The rate of corrosion depends on the concentration of hydronium ions. HA is a weak acid, so it is less corrosive than an acid with a small pKₐ.

C is wrong. HX is a strong acid, so there are more ions to carry the current. HX will be a good conductor of electricity.

D is wrong. HX is a strong acid, so it provides more hydronium ions and is more corrosive.

E is wrong. HX is a strong acid, so it provides more hydronium ions to stimulate the taste buds.

$\boxed{\textbf{B is correct}}$

7 0

4 years ago

The freezing temperature of water is zero on both the "K" and "C" scales. True False

Vera_Pavlovna [14]

False, 0 degrees on the K scale is absolute zero.

8 0

3 years ago