CHEMISTRY HIGH SCHOOL

Water (H2O) is considered a mineral because it is inorganic and occurs naturally.a. True
b. False

Answers

Answer 1
Answer: b.false because water is not mineral

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The concentration 12 g/L means there are 12 g of solute present in__________of solution.
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An environmental chemist needs a carbonate buffer of pH 10.00. How many grams of Na,Co, must she add to 1.5 L of 0.20 M NaHCO,? K, of HCO, = 4.7 x 10"

Answers

Answer: a

Explanation: it just like simple math but it just adding stuff

You fill a balloon with 2.50 moles of gas at 25°C at a pressure of 1.49 atm. What is the volume of the balloon?

Answers

You need to use the ideal gas equation: 

PV = nRT

P is pressure (in atm or bar)

V is volume (in L)

n is the number of moles (in mol)
 
R is an experimentally determined ratio of about 0.82 

T is the temperature (in Kelvin)

Note: For all gases, you need to convert Celsius or Fahrenheit to Kelvin.

25C + 273.15 = 298.15K

Get V alone.

V = (nRT)/(P)

Plug in the values you have.

V = (2.50 mol * 0.82 * 298.15 K)/(1.49 atm)

you get:

V = 611.2075L

A fun fact: the gas used to fill up a balloon is Helium. 

The universe is mostly made up of what?

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the universe is made mostly of empty space nothing else even close.

What important role does surface tension play in everyday life?

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* Some insects can walk on water.

*  The spherical shape of the drops of water.

*water resistance to the penetration of foreign bodies.

hope this helps!

How is geometrical symmetry related to the polarity of a molecule?

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A symmetric shape means the bonds' polarities are exactly equal then it means the polarities cancel each other, resulting to a nonpolar molecule. This is because there will be no available polarity for other substance to attach.

Explanation :

As we know that the geometrical symmetry of the molecule and the polarity of the bonds both are equally important for determining the polarity of the molecule.

The molecule that has zero dipole moment that means it is a geometrical symmetric molecule and the molecule that has some dipole moment that means it is a geometrical asymmetric molecule.

As the molecule is symmetric, the dipole moment will be zero and the molecule will be non-polar.

As the molecule is asymmetric, the dipole moment will not be zero and the molecule will be polar.

Thus, we can say that the a symmetry molecule is non-polar in nature and an asymmetry molecule is a polar molecule.

What do chemists measure concentration with?

Answers

how to calcutate concentration of solution.
there is 12gram of solute in a 36 gram solution
then you take 12 divided by 24 because 36-12=24 which is youe solvent

I think they use testubes.
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