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Orlov [11]
3 years ago
8

Help me pls!

Chemistry
2 answers:
victus00 [196]3 years ago
6 0
True. Your welcome...
fredd [130]3 years ago
5 0

Answer:

true

as temperatures rise, the atoms become more active; as per the opposite (meaning as temperatures drop, the atoms start to settle down) liquid is the more medium state (because the temperature rises enough for the solid to become a a liquid but not too much that the liquid evaporates and turns into a gas) have a great day/night

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Someone please help!!! please :(
fiasKO [112]

Answer:

To convert from mols to grams, multiply the number by the total molar mass of the compound.

To find the approximate molar mass of a compound, add up the molar masses of each element in the compound, making sure to multiply by the subscripts.

<u>#2 for example:</u>

First, find the molar mass of NaCl.

Molar mass of Na= 22.990g (refer to a periodic table or look it up)

Molar mass of Cl= 35.45g

22.990g + 35.45g= 58.44g

Next, convert from mols to g.

2.19 mol x 58.44g= 127.98g NaCl

To convert from grams to mols, do the same thing as mols to grams except DIVIDE instead of multiply.

<u>#3 for example:</u>

NaC2H3O2

Na= 22.99g

C2= 12.011 x 2 => 24.022g (multiply molar mass of C by 2 since there are 2 carbons)

Do this for the rest of the elements in the compound and add them up. The total molar mass should be approximately 82.0343g.

Next, convert from g to mol.

14.68g/82.0343g≈ 0.179 mol

8 0
3 years ago
Which pair of atoms have the most polar bond
Nikolay [14]

H-Cl pair of atoms has the most polar bond.

7 0
3 years ago
Name physical properties
Paraphin [41]

Answer:

<u>Some examples of physical properties are: </u>

color (intensive)

density (intensive)

volume (extensive)

mass (extensive)

boiling point (intensive): the temperature at which a substance boils.

melting point (intensive): the temperature at which a substance melts.

Explanation:

Hope this helped! <3

8 0
3 years ago
Naturally occurring hydrogen consists of three isotopes, hydrogen-1 (1.01 u),
Vlada [557]

Answer:

Hydrogen-1

Explanation:

Not sure what kind of explanation is needed for your question, because it doesnt specify.

The easiest should be:

Average mass of an element is calculated as the sum of the multiplication of each isotope by its percentage

And the mass of the hydrogen is 1, therefore the more abundant is hydrogen-1

3 0
3 years ago
Read 2 more answers
Are cell phones scientific
Rasek [7]
Yes hope this helps you
6 0
4 years ago
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