From the list of elements given, select 2 elements that would likely form an ionic bond. k, c, br, ar

The process of converting nitrogen into nitrogen compounds by bacteria is called:

7nadin3 [17]

I believe this process is called fixation

7 0

4 years ago

If you wanted to make .5 L of a 1 mole/L (M) of MgSO4 solution, how many grams of MgSO4 would you use?

tino4ka555 [31]

Answer:

0.5 grams

Explanation:

8 0

3 years ago

An animal cell placed in a hypertonic solution will shrink in a process called crenation. An animal cell placed in a hypotonic s

tresset_1 [31]

Answer:

Solution A: 3.21% (m/v) NaCl ⇒ CRENATION

Solution B: 1.65% (m/v) glucose ⇒ HEMOLYSIS

Solution C: distilled H₂O ⇒ HEMOLYSIS

Solution D: 6.97% (m/v) glucose ⇒ CRENATION

Solution E: 5.0% (m/v) glucose and 0.9%(m/v) NaCl ⇒ CRENATION

Explanation:

Isotonic solution = 0.9% (m/v) NaCl or 5.0% (m/v) glucose

Crenation will occur if the solution has a concentration higher than 0.9% (m/v) NaCl or 5.0% (m/v) glucose (hypertonic solution). This will occur in the following solutions:

Solution A: 3.21% (m/v) NaCl > 0.9% (m/v) NaCl

Solution D: 6.97% (m/v) glucose > 5.0% (m/v) glucose

Solution E: 5.0% (m/v) glucose and 0.9%(m/v) NaCl (the addition of the 2 components exceeds the osmotic pressure permitted).

Hemolysis will occur if the solution has a concentration lower than 0.9% (m/v) NaCl or 5.0% (m/v) glucose (hypotonic solution). This is the case of:

Solution B: 1.65% (m/v) glucose < 5.0% (m/v) glucose

Solution C: distilled H₂O = 0% glucose/0% NaCl < 0.9% (m/v) NaCl or 5.0% (m/v) glucose

3 0

3 years ago

The movement of water is able to transport minerals and nutrients. Which statement best explains why water is able to do this?

Nataliya [291]

The correct answer would be B

5 0

3 years ago

Water exists as a simple molecule. Describe the bonding present in water and how the electrons are involved in these bonds.

satela [25.4K]

Answer:

The *intramolecular* bonding between the Hydrogen and Oxygen atoms are called Covalent Bonds.

Covalent bonds are strong electrostatic attractions between 2 positively charged nuclei and a shared pair of electrons.

The *intermolecular bonding* of water molecules is called hydrogen bonding as well as instantaneous - induced dipole interaction.

Instantaneous-induced dipoles is where 2 water molecules interact. The results in negative electron clouds repelling each other resulting in a region of positive charge - the molecules are said to have an induced positive charge.

This water molecule with an induced positive charge then attracts electrons from a neighbouring water molecules - resulting in an instantaneous negative dipole.

These dipoles are fleeting/temporary and are the weakest intermolecular bonds.

Hydrogen bonding is a result of the 2 line pair of electrons in Oxygen atom of the water moelcule. These electrons are attracted to extremely electronegative (electronegativity :ability of an atom to attract a bonding pair of electrons) elements such as Oxygen from a neighbouring water molecule resulting in what is known as hydrogen bonding,

7 0

3 years ago