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2 years ago

Energy is anything that is made of atoms and has mass. A. True B. False

Chemistry

1 answer:

Vladimir79 [104]2 years ago

4 0

I believe this is false

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What happens when water interacts with rock formations

In-s [12.5K]

Answer: It will erode or dissolve.

Explanation: Erosion is the process when water makes contact with rock. If water makes contact with rock, it will dissolve, partially or completely. Also, if the rock has cracks in it, the water will fill in the cracks, and when it turns winter, the rock is crumble, due because the water will turn into ice when it's winter.

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3 years ago

What is the concentration of OH − and pOH in a 0.00066 M solution of Ba ( OH ) 2 at 25 ∘ C? Assume complete dissociation.

Allushta [10]

<u>Answer:</u> The hydroxide ion concentration and pOH of the solution is $1.32\times 10^{-3}M$ and 2.88 respectively

<u>Explanation:</u>

We are given:

Concentration of barium hydroxide = 0.00066 M

The chemical equation for the dissociation of barium hydroxide follows:

$Ba(OH)_2\rightarrow Ba^{2+}+2OH^-$

1 mole of barium hydroxide produces 1 mole of barium ions and 2 moles of hydroxide ions

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution

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

$pOH=-\log[OH^-]$

We are given:

$[OH^-]=(2\times 0.00066)=1.32\times 10^{-3}M$

Putting values in above equation, we get:

$pOH=-\log(1.32\times 10^{-3})\\\\pOH=2.88$

Hence, the hydroxide ion concentration and pOH of the solution is $1.32\times 10^{-3}M$ and 2.88 respectively

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3 years ago

How do cells respond to contact with other cells?

Blababa [14]

It depends on the function and activity of both cells. Most normal cells crease division if they came into contact with other cells however the immune system interact directly with pathogens or foreign organisms to destroy them.

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3 years ago

AP chem. Sublevels!!!!!!!!!!!

slavikrds [6]

Answer:

Explanation:

The lowest d is 3d.

Hope this helps!

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2 years ago

A graduate cylinder was filled to 25.0 mL with a liquid. A solid object weighting 39.7 g was immersed in the liquid, raising the

ELEN [110]

Answer:

184478 qreo si si es es hola

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3 years ago