How can we explain patterns of behavior among chemical elements?

2 answers:

5 0

The periodic table helps us see the pattern of behavior of elements. The chemical and physical properties of elements can be estimated based on their position in the periodic table.

Oduvanchick [21]3 years ago

4 0

Patterns of behavior among chemical elements can be explained using the periodic table. In the periodic table, chemical elements are arranged according to their proton numbers,(atomic number) this organisation illustrates common recurring patterns of physical and chemical properties among the elements.

You might be interested in

Enter the appropriate symbol for an isotope of potassium-39 corresponding to the isotope notation AZX.

muminat

The notation is actually written in this way (shown in the attached picture). The X is the symbol of the element. So, for potassium, the symbol is K. The A represents the mass number of the isotope. In this case, that would be equal to 39. The Z represents the atomic number of potassium, which is 19. Therefore, the symbol for the isotope is: ³⁹₁₉K

6 0

3 years ago

Read 2 more answers

Jorge conducted an experiment, and included the graph shown below as part of his lab report.

sergiy2304 [10]

Answer:physical change

Explanation:

8 0

3 years ago

Convert this temperature from F to C 26.6°c 93.600 62.2°C 5.7°C

eduard

The answer for this is 26.6°c

3 0

3 years ago

What is the rate of a reaction if the values are

3241004551 [841]

Answer:

Explanation:

Hi there,

To get started, let's first observe our rate law:

$R=k[A]^2[B]^2$ we typically use square brackets [x] for chemistry kinetics, because they specifically tell us we are dealing with concentrations.

This rate law is in fourth-order, because the concentrations powers add up to 4. We are not told the unit of time for this prompt (unless you know it), so I just assumed the time unit to be "time."

To calculate the reaction rate, we simply plug in the concentration of A and B into the rate law. k is the rate constant and stays the same for an individual reaction.

$R=(0.1 \ M^{-3}*time^{-1})[1 \ M]^2[2 \ M]^2=0.4 \ M/time$

Thus, the rate of reaction with those concentrations is 0.4 M/time.

Notice, the rate constant does in fact have units of it own. The unit for k can be calculated by knowing that:

Rate (R) must end up with units of concentration (M) per time.
The concentrations raised to a power can be used to help solve for the units of k.

If you liked this solution, leave it as Brainliest Answer and give a Rating!

5 0

3 years ago

Express the density 5.6 g/cm3

Irina-Kira [14]

I think it's 5,600kg/m^3

5 0

3 years ago