The size of the number "l" is not specified in the question, so it could be any size. The number "l" could be a single-digit number, a double-digit number, or even a larger number. Without more information, it is impossible to determine the specific size of the number "l." **

NaCl and MgO have different boiling points because they have different types of chemical bonds. NaCl has ionic bonds, which are formed between a metal (Na) and a nonmetal (Cl), while MgO has ionic bonds formed between a metal (Mg) and a nonmetal (O). Ionic bonds are stronger than covalent bonds, which are found in molecules like water. Therefore, NaCl and MgO have higher boiling points because it takes more energy to break the strong ionic bonds compared to the weaker covalent bonds. Additionally, MgO has a higher boiling point than NaCl because it has a higher charge and smaller size, leading to stronger ionic bonds. **

The size of l in numbers is the total count of elements in the list. For example, if l = [1, 2, 3, 4, 5], then the size of l is 5. This is because there are 5 elements in the list. The size of l can be determined using the len() function in Python, which returns the number of items in a list. **

To determine the amount of magnesium in 100g of MgO, we need to consider the molar mass of MgO, which is 40.3 g/mol. MgO consists of one magnesium atom (24.3 g/mol) and one oxygen atom (16 g/mol). Therefore, the percentage of magnesium in MgO is 24.3/40.3 = 0.602, or 60.2%. So, in 100g of MgO, there are 100g x 0.602 = 60.2g of magnesium. **

Having a credit card at 18 can be worth it if used responsibly. It can help build a positive credit history, which is important for future financial endeavors such as getting a car loan or a mortgage. Additionally, having a credit card can provide a sense of financial independence and teach important money management skills. However, it's crucial to use the credit card responsibly and avoid accumulating debt by paying off the balance in full each month. **

The dosing of L-Arginine and L-Citrulline can vary depending on individual needs and health conditions. However, a common dosing recommendation for L-Arginine is around 2-3 grams per day, while L-Citrulline is typically dosed at 3-6 grams per day. It is important to start with a lower dose and gradually increase it while monitoring for any potential side effects. Consulting with a healthcare provider or a nutritionist is recommended to determine the appropriate dosage for your specific needs. **

In the United States, individuals under the age of 18 cannot typically get a credit card in their own name. However, some credit card companies may allow individuals under 18 to become authorized users on a parent or guardian's credit card account. This can help young people start building credit history and learning responsible credit card use. Additionally, some banks offer special accounts for minors that come with a debit card, which can help them learn about managing money without the risk of accruing credit card debt. **

L-Arginine and L-Citrulline are often taken together to support nitric oxide production and cardiovascular health. The typical dosage for L-Arginine is 2-3 grams per day, while L-Citrulline is usually taken at a dosage of 3-6 grams per day. It's important to start with a lower dose and gradually increase to assess tolerance and effectiveness. It's also recommended to consult with a healthcare professional to determine the appropriate dosage for your specific needs and health conditions. **