CHEMISTRY HIGH SCHOOL

Which of the following pH values indicates the highest concentration of hydronium ions in a solution?

Answers

Answer 1
Answer:

pH value is the power of the hydrogen ions concentration in a solution. The more is the concertation more basic will be the solution, Less is the concertation more will be an acidic solution.

  • The highest concertation of ions is 1.0 as the lower is pH level the higher is the concentration of ions. Hence the option B 1.0 has an aqueous solution that has more ions.

Learn more about the pH values indicating the highest concentration.

brainly.com/question/20161888.
Answer 2
Answer: Hydronium ions are H30+, and pH = -log10[H+] 

As H+ ions in solution exist as H3O+ ions, the lower the pH, the higher the concentration of H30+

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What is the molarity of a solution that contains 612 grams of CaCl2 in 3.04 liters of solution?1.81 M
201 M
5.52 M

Answers

1.       There are a number of ways to express concentration of a solution. This includes molarity. Molarity is expressed as the number of moles of solute per volume of the solution. The concentration of the solution is calculated as follows:

 

Molarity = 612 g (1 mol / 110.96 g) / 3.04 L

Molarity = 1.81 M

1.81 M is the polarity of a solution that contains 612 grams of CaCl2 in 3.04 liters of solution.

Methanogens usually require Choose one: A. acidic conditions. B. methane as a substrate. C. high temperatures. D. association with bacterial species.

Answers

Answer:

D. association with bacterial species.

Explanation:

Methanogens -

These are the organisms , that falls under the category of the prokaryotes , in the domain archaea .

Methanogens are a type of microorganism , which is capable to produce methane as one of the by product during a hypoxic condition .

These organisms are found in the wetland , inside the digestive system of the humans and animals .

They have an important space for the treatment of the anaerobic wastewater .

Hence , from the question ,

The correct option is d.

What type of bond is formed between a metal and a nonmetal?Select one:
a. Metallic
b. Ionic
c. Nonpolar covalent
d. Polar covalent

Answers

the answer is b. ionic

How many miles of a gas sample are in a 20.0 l container at 373kand 203 kpa? the gas constant is 8.31 l-kpa/m-k

Answers

To simplify our solution for this probelm we first assume that the gas we are dealing with is an ideal gas. Given that it is ideal we can proceed the solution using the formula: PV=nRT where P is pressure (203KPa), V is volume (20.0 L), n is moles (required), T is absolute temperature (373K) and R is the gas constant ( 8.31 l-kpa/m-k). Plug in the given to the respective variables and you should get 3.28 moles of the gas sample. 

Calculate the energy in joules and calories required to heat 25.0 g of water from 12.5C to 25.7C

Answers

the heat (Q) required to raise the temp of a substance is:Q=m∗Cp∗ΔT where m is the mass of the object (25.0g in this case), Cp is the specific heat capacity of the substance (for water Cp = 1.00cal/gC, or 4.18J/gC,
and Dt is the change in temp.
You'll have to solve this twice, once with the Cp in calories, and once with the Cp in joules.
1380.72 Joules

What principle do Tesla coils use to generate electricity?

Answers

Electromagnetic
Hope this helps!
when u give supply to a coil then a current will be passed through it . 
naturally a magnetic field is produced around the c.c.c(current carrying conductor). when u make more turns in the same direction the whole magnetic field will be stronger than that of a wire has. and 
by lenz's law there will be an opposition to the changing current in a coil due to the change in magnetic field produced
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