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ladessa [460]
4 years ago
11

What does an atomic number represent In an Adam

Chemistry
1 answer:
noname [10]4 years ago
8 0
Oh, cool! I'm learning this too!

This may sound difficult, so let's try a example of one now. How about Boron?
(*hiya, mr.boron! (^u^/)*)

The ATOMIC NUMBER is located at the very top of the group symbol you're referring to.

"So how do I locate it?"
_______________
| 5 | <======Atomic # | B | <====== Symbol
| Boron | <=== Element Name
10.81 <====== Atomic Mass |______________|

In this case, the number is five, which is representing 5 atoms with protons and electrons. It does not have 5 single protons or electrons, otherwise it'd be one group of positive protons, negative electrons, and so on.

Try not to get it confused by ATOMIC MASS, which is located on the bottom (10.81; That could appear as a trick question on a quiz of some sort. It happened to me once, yikes.) The Atomic Mass contains the number of protons and NEUTRONS (The center nucleus of the atom), which contains nada, zero, nothing. It has ABSOLUTELY no charge, at all.

Hope that worked! :)
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Which of the substances has polar interactions (dipole–dipole forces) between molecules?
Yuki888 [10]

<u>Answer:</u>

CHCl3 has dipole-dipole interactions.

<u>Explanation:</u>

Trichloromethane has a electric dipole moment permanently pointing along the line parallel with the Hydrogen carbon axis.Dipole-dipole interactions are said to be intermolecular force of  attractions that is formed from two permanent dipoles interacting.

These type of interactions  are occurring when one of the partially charged formed molecule are  being attracted to an opposite partially charged molecule  nearby . The molecules align in a state that the positive end of one of the molecule  gets interacting with the negative end of the another molecule.

7 0
3 years ago
When the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of
saveliy_v [14]
It's 3. There are two Cl in the reactants and 3 in the products, and they need to be balanced/equal. Only way to do that is add three on the left side, which will give you 6 Cl (3×2Cl) and then 2 on the other side, which will also give you 6 Cl (2×3Cl)
7 0
3 years ago
Most gases have the property of becoming increasingly soluble in a liquid as the temperature of the liquid decreases. which grap
umka2103 [35]
The graph that shows that gases become increasingly soluble in a liquid as the temperature of the liquid decreases is a graph that shows these characteristics:


1) vertical-axis (traditional y-axis): solubility

2) horizontal-axis (traditional x-axis): temperature

3) graph: a curve with negative slope, i.e. the as the temperature (horizontal-axis) goes further to the right (increasing), the solubility (vertical-axis) goes downward.

An example of the application of this property is the CO2 in the sodas. CO2 incorporated at low temperature.
7 0
3 years ago
What are some things that are composed of only on element?
Dominik [7]

Answer:

An aluminium drink can.

24 carat gold.

The helium gas in a balloon that floats upwards.

Cast iron garden railings.

Lead sheeting used by builders on the roofs of houses.

3 0
3 years ago
Wine is approximately 12% ethanol (CH3CH2OH) by volume. Ethanol has a molar mass of 46.06 g/mol and a density 0.789 g/mL. How ma
stiks02 [169]

Answer:

1.54 moles of pure ethanol are present in 750mL of wine

Explanation:

The sort of concentration 12% by volume, means that in 100 mL of solution (wine) 12 mL are pure ethanol

We use the density of pure ethanol to determine the mass:

Ethanol density = Ethanol mass / Ethanol volume

Ethanol density . Ethanol volume = Ethanol mass

0.789 g/mL . 12 mL = 9.47 g of ethanol

Now we can determine the moles: 9.47 g . 1 mol / 46.06 g = 0.205 moles

Now we can make a rule of three:

In 100 mL of solution (wine) we have 0.205 moles of pure ethanol

Then, in 750 mL of solution we may have (750 mL . 0.205) / 100 = 1.54 moles

8 0
4 years ago
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