Which of the following substances best conducts electricity in an aqueous solution?a. H2O b. NH3 c. CH3OH d. CaCl2

Answers

Answer 1

Answer:

The correct option is D.

Substances that can conduct electricity in aqueous solutions are called electrolytes. Calcium chloride is an example of an electrolyte. Ionic compounds are usually good electrolytes, this is because they contain mobile ions, which can carry electricity round an electrical circuit. Both positive and negative ions are present in electrolytes; the positive ions comes from the metals while the negative ions comes from the non metals. These ions are able to move about when the compound is in the molten form or in aqueous solution.

Answer 2

Answer: The correct answer is definitely D. CaCl2
H2O can't be a productor just by itself as it need electrolytes.
CH3OH is non-polar one, so throw it.
You need something form ionic compound range, so the last one is the only suitable answer.

Related Questions

An equilibrium mixture of PCl5(g), PCl3(g), and Cl2(g) has partial pressures of 217.0 Torr, 13.2 Torr, and 13.2 Torr, respectively. A quantity of Cl2(g) is injected into the mixture, and the total pressure jumps to 263.0 Torr (at the moment of mixing). The system then re-equilibrates. The appropriate chemical equation is:PCl3(g) + Cl2(g) ---> PCl5(g)Calculate the new partial pressures after equilibrium is reestablished. [in torr]PPCl3PPCl2PPCl5
A sample of matter must be copper if(1) each atom in the sample has 29 protons(2) atoms in the sample react with oxygen(3) the sample melts at 1768 K(4) the sample can conduct electricity
Compared to a 0.1 M aqueous solution of NaCl, a 0.8 M aqueous solution of NaCl has a(1) higher boiling point and a higher freezing point (2) higher boiling point and a lower freezing point (3) lower boiling point and a higher freezing point (4) lower boiling point and a lower freezing point
What do you think will happen if you pinch your arm after you stub your toe?
A student adds 0.40g of sodium hydroxide to a clean, dry 250 mL beaker and leaves the beaker and leaves the beaker on the lab table. The mass of the empty beaker is 112.58g. After 24 hours, the student observes that the beaker contains a dry, solid white residue. The total mass of the beaker and its contents is 113.09g. Following are three possible chemical reactions that could have occured: Sodium Hydroxide (solid) + Carbon Dioxide (gas) rightarrow Sodium Bicarbonate (solid) Sodium Hydroxide (solid) + Carbon Dioxide (gas) rightarrow Sodium Carbonate (solid) + Water (gas) Sodium Oxide (solid) rightarrow Sodium Oxide (solid) + Water (gas) Use your knowledge of stoichiometry to determine which chemical reaction occurred. Show your work, and explain your reasoning whenever needed.

Formed when chemicals in the air get into rain and up the acidity levels

Answers

Acid Rain is formed when chemicals in the air get into rain and up the acidity levels!!!!!!

Hope this helps guys!

Answer:

yes acid rain

Explanation:

What is the term for a fine grained soil deposited by the wind

Answers

I think it is called a loess. Please correct me if I am wrong.

2. 7.5 g of potassium react with water to produce potassium hydroxide and hydrogen gas. Calculate the mass of potassium hydroxide produced. (8 points)

Answers

Answer:

10.7 g of KOH

Explanation:

First of all, we determine the reaction:

2K (s) + 2H₂O(l) → H₂(g) + 2KOH(aq)

We convert the mass of K, to moles → 7.5 g . mol/39.1 g = 0.192 moles

Ratio is 2:2, so the moles I have of K must produce the same moles of KOH. In this case, the produces moles of KOH are 0.192 moles.

We convert the moles to mass, to finish the answer:

0.192 mol . 56.1g /1mol = 10.7 g of KOH

Which of the following ions has a smaller size? Option 1: O2- Option 2: F- Option 3: They have the same size. Option 4: None of the above.

Answers

The fluoride ion (F-) is smaller in size than the oxide ion (O2-).

The ion with a smaller size is F- (fluoride ion) compared to O2- (oxide ion).

The size of an ion depends on the number of protons and electrons it has. Fluoride ion has one less electron than the oxide ion, making it smaller in size.

This trend can be explained by the concept of effective nuclear charge, where the positive charge of the nucleus is partially shielded by other electrons in the atom. As the atomic number increases from oxygen to fluorine, the increase in nuclear charge outweighs the additional electron-electron repulsions, resulting in a smaller size for fluoride ion.

Learn more about Ion size here:

brainly.com/question/32732233

#SPJ1

Determine the pH of a 1x10^-4 M solution of HCl.

Answers

The HCl is a strong acid, that is, it is fully consumed in the reaction.

HCl(aq) ------------> H₃O⁺(aq) + Cl⁻(aq)
↓ ↓ ↓
1x10⁻⁴ M 0 0
-1 x 10⁻⁴ + 1 x 10⁻⁴ +1 x 10⁻⁴
_____________________________________
0 + 1 x 10⁻⁴ M + 1 x 10⁻⁴ M

PH = - log [ H₃O⁺ ]

PH = - log [ 1 x 10⁻⁴]

PH = 4.0

hope this helps!

The Top Thrill Dragster, a rollercoaster at Cedar Point in Ohio, soars through the air at 176ft/sec. How fast is this in mph?

Answers

The rollercoaster has a speed of 176 ft/sec. This can be converted to miles per hour. The speed is equivalent to 120 mph.

What is speed ?

Speed is a physical quantity measuring the distance travelled by an object per unit time. Speed is a scalar quantity. The rate of speed is called velocity.

The speed can be expressed in different units. such as m/s, km/h, ft./s miles per hour etc. These units can be interconverted using specific relations.

One ft/s = 0.682 mph

then, 176 ft./s = 0.682 × 176 = 120 mph.

Therefore, the speed of the roller coaster is 120 mph.

Find more on speed:

brainly.com/question/7359669

#SPJ1

Other Questions

Based on reactivity, which of the following elements can replace aluminum (Al) in a compound during a single replacement reaction?

How much energy is passed to the next trophic level in the food chain?

What kind of organic compound is oxybenzone?

6 CO2 + 6 H2O + Energy--> C6H12O6 + 6 O2 is the chemical formula for:A: abiogenesis B: Respiration C: Photosynthesis D: Homostasis