A regular letter gets one first class stamp- 46 cents.
This depends on where you are mailing the letter from, and the dimensions and weight of the letter.
In the US, the amount of postage is the same for mailing a letter anywhere within the US. Not sure is additional charge for mailing to Hawaii.
Any normal letter weighing less than one ounce requires but one stamp for mailing.
44 cents
probably around 20
96 cents
How much refrigerant is needed recharge ac on a 2001 Pontiac montana
Currently an international first class letter of one ounce is 98 cents.
It depends on where you are mailing the letter from. If from the USA, it would take two stamps. If you are not from the USA, then I would suggest going to your post office or place where you send the letters and the workers there will weigh the letter and tell you how many stamps or how much money is needed to mail your letter.
The number of stamps needed to mail a letter to Madrid depends on the weight of the letter and the postal service you are using. Generally, for standard international letters, one stamp may suffice if it covers the required postage. However, for heavier letters or specific mailing services, additional stamps may be needed. It's best to check with your local postal service for the exact requirements.
This depends only on the weight of the letter. If it is under 13oz you can send it anywhere in the country with 1 first class stamp.
To decide about insurance, it depends what you are mailing. If it is an expensive object such as electronics or jewelry then it is wise to purchase insurance. If it does not have much value then insurance is not needed.