Na+ and K+ are both important in primary active transport - e.g. the sodium potassium pump. This establishes a voltage and concentration gradient outside of our cell membranes that can then be used for "work" like bringing glucose into the cell via the Na+/glucose cotransporter.
Cl- is a large intracellular anion that also helps to keep the inside of a cell negatively charged in relation to the extracellular fluid. So again, it helps create a voltage difference so that work can be done more easily.
Potassium chromate is more soluble than silver chloride because potassium chromate is a salt formed between a metal cation and a polyatomic anion, which generally exhibit higher solubility due to their ionic nature. In contrast, silver chloride is a simple binary compound with strong ionic bonds, leading to lower solubility as compared to the more complex structure of potassium chromate.
The bond in F2 is a covalent bond, where two fluorine atoms share electrons to form a stable molecule. In contrast, the bond in KCl is an ionic bond, where potassium donates an electron to chlorine to form a positively charged potassium ion and a negatively charged chloride ion that are attracted to each other electrostatically.
In an ionic compound the charges of all the ions must balance out to zero. The chloride ion has a charge of -1. Lithium and potassium ions both have a +1 charge. So these ions will combine in a 1:1 ration. By contrast, barium, strontium, and calcium all form ions with a 2+ charge, so in order to balance the charges, chloride ions must combine with these metals in a 2:1 ratio.
The Lewis structure for potassium chloride (KCl) has K bonding with Cl through an ionic bond, where K donates an electron to Cl. In contrast, the Lewis structure for hydrogen chloride (HCl) depicts a covalent bond where H and Cl share electrons. Additionally, in KCl, K has a full valence shell due to its electron donation, while in HCl, both H and Cl achieve a full valence shell through electron sharing.
The bond in F2 is a covalent bond, where two fluorine atoms share a pair of electrons to achieve stability. In contrast, the bond in KCl is an ionic bond, formed between a positively charged potassium ion and a negatively charged chloride ion through electrostatic attraction.
Barium chloride is toxic and hasn't medical use; barium sulfate is used for internal radiography as a contrast substance.
The moods of the speakers are different, and you would contrast them in a compare-and-contrast.
contrast
Water soluble contrast media
Different; contrast
These substances have different molecular sizes and charges, which can affect their ability to penetrate the cell membrane. For example, glucose and urea are small molecules and can easily pass through the membrane, causing osmosis to occur. In contrast, NaCl, ammonium chloride, and larger molecules may not pass through as easily and lead to different osmotic effects on RBCs.
The moods of the speakers are different, and you would contrast them in a compare-and-contrast.