All categories

3 years ago

What does an atomic number represent in an atom?

Chemistry

2 answers:

egoroff_w [7]3 years ago

6 0

Answer: An atomic number represent protons in an atom.

Explanation:

An atom consists of electrons, protons, and neutrons. The protons and neutrons are present inside the nucleus of an atom whereas the electrons revolve around the nucleus of an atom.

The number of protons in an atom represents the atomic number of that particular atom. Further, this atomic number determines the place of each atom in the periodic table and its chemical properties.

For example, the mass number of sodium atom is 23 that is number of protons and neutrons. The atomic number of sodium is 11 that means there are 11 protons. The number of neutrons will be 23 - 11 = 12.

seraphim [82]3 years ago

5 0

It represents the number of protons in the nucleus of an atom which determines the chemical properties of an element.

You might be interested in

Which of the following is true of gases

yuradex [85]

Explanation:

i think its 4, i might be wrong.

7 0

3 years ago

A ruptured tank in Anywhere, USA, spilled hydrochloric acid. Officials were reported to be concerned that the acid might mix wit

lawyer [7]

Answer:

Option C; NONE.

Explanation:

A chemical reaction forms new chemicals called the products from the initial chemicals called the reactants. The reaction between an acid and a base is called neutralization, and the products formed are water and a salt.

When hydrochloric acid and sodium hydroxide is mixed together, they interact, and result in salt and a release of heat.

The result of the interaction of these two highly aggressive compounds is table salt and water, these resulting compounds are ultimately harmless, and even beneficial, to human beings.

Therefore, NO TOXIC GAS WOULD BE FORMED BY MIXING HYDROCHLORIC ACID WITH SODIUM HYDROXIDE.

5 0

3 years ago

A gas originally occupying 10.1 L at 0.925 atm and 25 C is changed to 12.2 L at 625 torr. What is the new temperature?

malfutka [58]

We can use the combined gas law equation to find the new temperature
$\frac{P1V1}{T1} = \frac{P2V2}{T2}$
parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation
P - pressure
P1 - 0.925 atm x 101 325 Pa/atm = 93 726 Pa
P2 - 625 torr x 133 Pa/torr = 83 125 Pa
V - volume
V1 - 10.1 L
V2 - 12.2 L
T - temperature in kelvin
T1 - 25 °C + 273 = 298 K
substituting these values in the equation
$\frac{93726Pa * 10.1L }{298K} = \frac{83125 Pa*12.2L}{T2}$
T = 319 K
temperature in celsius - 319 K - 273 = 46 °C

6 0

3 years ago

What is the volume of a cone with a height of 27 cm

andreev551 [17]

Answer:

the answer is 4778.36

Explanation:

do pi time the radius squared times the height divided by 3

5 0

3 years ago

Which of the following qualities do China and India have in common?

vfiekz [6]

The answer would be: d. Populations are over one billion.

China and India are the only two countries in the world with a population of over one billion.

7 0

4 years ago