Explanation

"6.022 × 10²³ atoms of carbon"

Correct — Each CO₂ molecule contains 1 carbon atom

So, 1 mole of CO₂ has 6.022 × 10²³ carbon atoms

Explanation

 White blood cells, also called leukocytes, are primarily responsible for fighting infections by engulfing and destroying harmful pathogens through a process called phagocytosis. 

Explanation

Astatine is considered the rarest naturally occurring element on Earth, making it the "rare halogen" among the group which includes fluorine, chlorine, bromine, and iodine. 

Explanation

 Molecular mass of water (H₂O) = 2(1) + 16 = 18 g/mol

- This means 18 grams of water contains 1 mole of water molecules.  

Explanation

While manure is a fertilizer, it's considered organic because it's derived from decomposed organic matter (like animal waste or plant material). 

Explanation

B cells are white blood cells that are specifically responsible for producing antibodies when the body detects a foreign pathogen like a bacteria or a virus. 

Explanation

 When an object moves at constant speed, its acceleration is zero.  

According to Newton’s Second Law:  

F = ma → If a = 0, then F = 0

Explanation

Molar mass of sodium hydroxide (NaOH) = 23 (Na) + 16 (O) + 1 (H) = 40 g/mol

- For 2 moles: 40 g/mol × 2 = 80 grams

Explanation

Aromatic hydrocarbons have a high carbon-to-hydrogen ratio, which leads to incomplete combustion and the production of soot when burned, resulting in a smoky flame. 

Explanation

Inner transition elements are the elements located in the f-block of the periodic table.

These elements are divided into two series: lanthanides and actinides

Therefore, both lanthanides and actinides are considered inner transition elements.