The heat for melting or freezing water, also called the Heat of Fusion (Hf), is 80 calories per gram at 0Â°C, which is the equilibrium temperature. In other words, it is necessary to add 80 calories of energy to melt one gram of ice at 0Â°C.
The CVV Number (Card Verification Value) on your credit card or debit card is a 3 digit number on VISAÂ®, MasterCardÂ® and DiscoverÂ® branded credit and debit cards. On your American ExpressÂ® branded credit or debit card it is a 4 digit numeric code.
91-124-2801261. * These Toll Free numbers can be accessed from both Landline and Mobile numbers from anywhere in India. Corporate Card members can contact the 24 hour American Express Corporate Services Helpline for assistance with lost or stolen Cards, billing enquiries, and other services.