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3 years ago

A solution with a PH less than 7 is neutral (True) or (false)

Chemistry

2 answers:

kiruha [24]3 years ago

4 0

False because 7 is a neutral less than 7 is acidic

Galina-37 [17]3 years ago

3 0

False, if the ph is less than 7 it is acidic

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Explanation:

pressure is Force/area

30000/0.75

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3 years ago

a sample of compound determined to contain 1.71 g C and 0.287 g H. The corresponding empirical formula is

fiasKO [112]

Answer: The empirical formula is $CH_2$ .

Explanation:

Mass of C = 1.71 g

Mass of H = 0.287 g

Step 1 : convert given masses into moles.

Moles of C = $\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{1.71g}{12g/mole}=0.142moles$

Moles of H = $\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{0.287g}{1g/mole}=0.287moles$

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = $\frac{0.142}{0.142}=1$

For H = $\frac{0.287}{0.142}=2$

The ratio of C: H = 1: 2

Hence the empirical formula is $CH_2$ .

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3 years ago

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gregori [183]

Yes. Heating up the solvent gives the molecules more kinetic energy. The more rapid motion means that the solvent molecules collide with the solute with greater frequency and the collisions occur with more force. Both factors increase the rate at which the solute dissolves.

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3 years ago

What is the mass of a sample containing 3.5 moles of silicon atoms?

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The answer is c .”98 g “

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2 years ago

Classify the substances according to the strongest solute-solvent interaction that will occur between the given substances and w

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Explanation:

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When a polar molecules produces a dipole on a non-polar molecule through distribution of electrons then it is known as dipole-induced forces.

For example, $NH_{3}$ , $CH_{3}OH$ etc are the molecules which show dipole-dipole interactions.

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2 years ago