Chemical energy is also called enthalpy, denoted by the symbol ΔH ... The energy changes in a reaction can be represented in anenergy profile diagram. Combustion reactions are used to obtain energy ...

In his book The Mathematical Universe, mathematician William Dunham wrote of John Venn’s namesake legacy, the Venn diagram, “No one in the long history of mathematics ever became better known ...

Allergies are an immune system reaction to substances called allergens. The cause a range of symptoms from a stuffy nose to itchy eyes to difficulty breathing. How long allergies last varies based on ...

Reaction formation may be a temporary coping mechanism, but it’s unproductive in the long run. It ignores underlying beliefs or challenges that need to be addressed, which can hurt mental health.

A food allergy is when you have a reaction to a particular food after eating it. However, it is possible to be allergic simply to the smell of a food, too. In some cases, you may be reacting to the ...

North Korea has dismissed US secretary of state Marco Rubio's 'rogue state' remark as nonsense and a grave political provocation, threatening tough counteraction. Despite Trump's diplomatic ...

NTA has released the complete JEE Mains 2025 exam date on the official website, jeemain.nta.nic.in. According to the notification, the JEE Main 2025 session 1 exam for B.Tech will be held on ...

Sarah Vine and Andrew Pierce bring their own no-holds-barred opinions, insights and reaction (clue is in the title) to the biggest stories of the week. New episodes every Wednesday, wherever you ...

Substitution reactions are fundamental in organic chemistry, demonstrating how molecules can be transformed into different structures. In a substitution reaction, one functional group in a compound is ...