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3 years ago

If a solution has virtually no hydrogen ions, what type of pH does it have?

Chemistry

2 answers:

Reptile [31]3 years ago

8 0

Im not positive on this one but i think theanswer is 2

Ganezh [65]3 years ago

6 0

Well, technically it would have a pH reading and or measurement of 0. As a ph of 1 would represent that there are hydrogen ions, no matter how less present in the solution, since pH is a measure of Hydrogen ions present in a solution, a pH value of 0 would mean virtually no protons, hydrogen ions.

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Why do molecular compounds have low melting points and low boiling points relative to ionic substances?

kap26 [50]

Answer:

The melting and boiling points of molecular compounds are generally quite low compared to those of ionic compounds. This is because the energy required to disrupt the intermolecular forces between molecules is far less than the energy required to break the ionic bonds in a crystalline ionic compound

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3 years ago

If 20 mL of gas is subjected to a temperature change from 10°C to 100°C and a pressure change from 1 atm to 10 atm,

Evgesh-ka [11]

Answer:

E. None of these

Explanation:

We know, By GAS laws,

PV = NRT, where p- pressure, v- volume, n- number of moles, R- gas constant ,and T- temperature

Now, In the question, the number of moles remains the same as the gas is the same. so n is constant so we can compare n before and after a temperature change.

$\frac{P1V1}{RT1}$ = $\frac{P2V2}{RT2}$

where P1= 1 atm, P2 = 10 atm, V1= 20 mL, T1= 10°C and T2= 100°C

We don't have to worry about the standard units as they are present equally on both the sides and get cut, same goes for R( gas constant)

So putting values, we get

$\frac{1*20}{R*10} = \frac{10*V2}{R*100}$

Cutting, R on both sides and moving contents to the right so that only V2 is left on the left.

$\frac{1*20*100}{10*10} = V2$

∴ V2 = $\frac{2000}{100}$

∴ V2 = 20mL

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2 years ago

3. According to Newton's First Law of Motion, what does an object at rest do?

Taya2010 [7]

Answer:

stays at rest

Explanation:

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3 years ago

Abnormal behavior is defined as a?

hodyreva [135]

Answer:

Abnormality is a behavioral characteristic assigned to those with conditions regarded as rare or dysfunctional. Behavior is considered abnormal when it is atypical or out of the ordinary, consists of undesirable behavior, and results in impairment in the individual's functioning

Explanation:

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3 years ago

What does the atomic number tell you about the element

jonny [76]

It tells you how many protons it has and because the number of protons =electrons it tells you also the number of electrons.

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3 years ago