Explanation

Explanation

Explanation

Heat of reaction refers to the amount of heat released or absorbed during a chemical reaction.

If heat is released, the reaction is exothermic; if absorbed, it's endothermic.

Explanation

A simile is a figure of speech that directly compares two different things using words like “like” or “as.”

Example: "She is as brave as a lion." — compares bravery to a lion using "as".

Explanation

1 becquerel = 1 radioactive decay per second = 2.703x10^-11 Ci.

Explanation

Insulin is produced by the pancreas, which is an organ located behind the stomach.

The pancreas contains clusters of cells called the Islets of Langerhans, specifically the beta cells within these islets, which are responsible for producing insulin.

Insulin plays a crucial role in regulating blood sugar levels by facilitating the uptake of glucose into cells for energy production or storage.

When blood sugar levels rise after a meal, the pancreas releases insulin to help lower blood sugar levels by promoting the uptake of glucose into cells.

Explanation

The molar mass of water (H₂O) is 18 grams per mole (H = 1g × 2, O = 16g).

So, 1 mole of water weighs 18 grams.

Explanation

"Would" is used to describe past habitual actions, especially in narrative or storytelling.

"When she was in the university" sets the action clearly in the past, so "would" fits well.

When she was in the university, she would wake up early in the morning."

Explanation

Explanation

A step-up transformer increases the voltage of the input signal, resulting in a higher voltage output.

This is achieved by having more turns in the secondary coil than in the primary coil.