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Elena-2011 [213]
4 years ago
14

On the ph scale, which value represents a base? 3 7 10

Chemistry
2 answers:
svet-max [94.6K]4 years ago
7 0
The correct answer among the choices given is the last option A pH reading of 10 represents a basic solution. pH is a measure of the concentration of hydrogen ions of the substance. Solutions that have more OH– than H+ ions are bases. These are substances that are slippery to touch and has an astringent taste. It reacts with acids in a neutralization reaction forming salts. 
erma4kov [3.2K]4 years ago
4 0

Answer: C- 10

The ph of 7 is neutral which means this couldn't be the answer. Your best bet is choice C.

*<em>Just took the test answer is correct  </em>*

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Which is the best explanation for a convection current in the atmosphere?
almond37 [142]

The convection current in the atmosphere is best explained as the process by which hot air expands and rises, becoming cooler and denser, then falling again in a continuous process.

Heat transfer by convection involves the transfer of heat by the actual movement of the heated molecules from the hot parts to the cooler parts of a fluid.

The continuous movement of hot air or liquid from bottom to the top and cold liquid or air from the top to the bottom is known as convection current.

Thus, we can conclude that convection current in the atmosphere is best explained as the process by which hot air expands and rises, becoming cooler and denser, then falling again in a continuous process.

Learn more here: brainly.com/question/20295382

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Explain. How you would separate a mixture of water, sand, salt, and iron feelings into its four component parts
Goryan [66]
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8 0
3 years ago
Help me please( ╹▽╹ )​
xeze [42]

Lower temperature

Let's verify

  • Pressure=P
  • volume=V
  • Temperature=T

As per Boyles law

\\ \rm\Rrightarrow V\propto \dfrac{1}{P}

As per Charles law

\\ \rm\Rrightarrow V\propto T

\\ \rm\Rrightarrow T\propto \dfrac{1}{P}

So

At higher altitudes lower the pressure so lower the temperature

4 0
3 years ago
A chemist prepares a solution of iron chloride by measuring out 0.10 g of FeCl2 into a 50. mL volumetric flask and filling to th
Tanya [424]

<u>Answer:</u> The molarity of anions (Cl^-) in the solution is 0.0316 M

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}

We are given:

Given mass of iron (II) chloride = 0.10 g

Molar mass of iron (II) chloride = 126.75 g/mol

Volume of solution = 50 mL

Putting values in above equation, we get:

\text{Molarity of iron (II) chloride}=\frac{0.10\times 1000}{126.75\times 50}\\\\\text{Molarity of iron (II) chloride}=0.0158M

1 mole of iron (II) chloride produces 1 mole of Fe^{2+} ions and 2 moles of Cl^- ions

So, concentration of chloride ions (anions) in the solution = (2\times 0.0158)=0.0316M

Hence, the molarity of anions (Cl^-) in the solution is 0.0316 M

7 0
4 years ago
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