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.
National AMEX coupon, Get a two class upgrade on your next National American Express rental by 12/31/16. Use National coupon code NU1155SDA. Good on a rental of Compact or Mid Size car for rental pickup by 12/31/16. Upgrade applied at the counter.