All categories

4 years ago

What is the periodic table, and what is its significance in the study of chemistry?

Chemistry

1 answer:

NeX [460]4 years ago

6 0

Explanation:

<u>Periodic table is the tabular display of elements that are arranged by the increasing atomic number. </u>

Structure of the periodic table shows various periodic trends.

<u>Significance: </u>

The periodic table is very important because it gives an organized way to provide lots of information about the elements and how they can be related to one another. The table gives a systematic approach to study the elements and their properties. The table can also be used to predict the properties of the elements which have not been discovered yet.

You might be interested in

What environmental factors might make a strong odor an advantage for the

Molodets [167]

Answer:

Rafflesia smell like roadkill others for only a few hours and while a few smaller species barely smell at all. And In short a parasitic life is heavily specialized biological requirements.

Explanation:

6 0

3 years ago

Determine the amount of heat energy in joules required to raise the temperature of 7.40g of water from 29.0OC to 46.0 OC.

valina [46]

Answer: The amount of heat energy in joules required to raise the temperature is 526 Joules

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

$Q=m\times c\times \Delta T$

Q = Heat absorbed = ?

m= mass of substance = 7.40 g

c = specific heat capacity = $4.184J/g^0C$

Initial temperature of the water = $T_i$ = 29.0°C

Final temperature of the water = $T_f$ = 46.0°C

Change in temperature , $\Delta T=T_f-T_i=(46.0-29.0)^0C=17.0^0C$

Putting in the values, we get:

$Q=7.40g\times 4.184J/g^0C\times 17.0^0C$

$Q=526J$

The amount of heat energy in joules required to raise the temperature is 526 Joules

4 0

3 years ago

A sample of oxygen gas occupies a volume of 250 mL at .8 atm of pressure. What volume will it occupy at 1.2 atm of pressure?

musickatia [10]

167 mL

P1V1 = P2V2
P1 = .8 atm
V1 = 250 mL
P2 = 1.2 atm

Solve for V2 —> V2 = P1V1/P2

V2 = (0.8 atm)(250 mL) / (1.2 atm) = 167 mL

7 0

3 years ago

If the experiment were repeated using a cuvettes with a path length of 2.0 cm, how would that affect the absorbance values for t

inessss [21]

Answer:

..............................

5 0

3 years ago

Is H2O+CO2 = H2CO3 a redox reaction? How?

Dafna1 [17]

Answer:

It is not an oxidation-reduction reaction. The formation of carbon dioxide and water are redox reactions which involve the oxidation of carbon and hydrogen respectively with oxygen being reduced in both the case.

Explanation:

3 0

3 years ago