All categories

3 years ago

The solution starts with increased

Chemistry

1 answer:

marta [7]3 years ago

8 0

Answer:

Increasing the Molarity by Volume. Determine the number of moles of solute in a given solution by dividing the number of grams of solute by its molecular mass.

Explanation:

You might be interested in

In going across a row of the periodic table, protons and electrons are added and ionization energy generally increases. In going

RoseWind [281]

Answer:

Explanation:

Ionization energy:

It is the minimum amount of energy required to remove the electron from isolated gaseous atom to make the ion.

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell.

When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required. Where as,

When we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

As the size of atom increases the ionization energy from top to bottom also decreases because it becomes easier to remove the electron because of less nuclear attraction and as more electrons are added the outer electrons becomes more shielded and away from nucleus.

4 0

4 years ago

What’s the mass number for this atom

adelina 88 [10]

Answer:

169

Explanation:

Mass number is the number of protons and the number of neutrons combined.

70 + 99 = 169

7 0

3 years ago

Which list BEST identifies how the arrows should be arranged around the paper leaf in the model to represent the movement of mat

Andrew [12]

Answer:

D. Point into Leaf: water(H₂O), carbon dioxide (CO₂) sunlight, Point away from leaf: Sugars, oxygen (O₂)

Explanation:

Photosynthesis is the process used in the production of chemical energy in the form of energy containing organic compounds and oxygen from atmospheric carbon dioxide and liquid water enabled with the energy captured from light (mainly Sunlight) by the chlorophyll in green plants and other organisms

The basic chemical reaction involved in a photosynthesis reaction is presented as follows;

${}$ Sunlight

${}$ ↓

${}$ CO₂ + H₂O (l) → C₆H₁₂O₆ + O₂

Carbon dioxide ${}$ Water Glucose Oxygen

8 0

3 years ago

Assuming the metals lose all their valence electrons and the nonmetals gain electrons to complete the s-p subshells, which listi

Nataly [62]

Answer: Option (c) is the correct answer.

Explanation:

Atomic number of sodium is 11 and its electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{1}$ . When sodium loses one electron then it will attain +1 charge and its electronic configuration will be as follows.

$Na^{+}$ : $1s^{2}2s^{2}2p^{6}$

Atomic number of fluorine is 9 and its electronic configuration is $1s^{2}2s^{2}2p^{5}$ . When fluorine gains an electron then it acquires -1 charge and its electronic configuration is as follows.

$F^{-}$ : $1s^{2}2s^{2}2p^{6}$

Atomic number of aluminium is 13 and its electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}$ . When aluminium loses its valence electrons then it acquires +3 charge and its electronic configuration is as follows.