When using a .csv file for lookups, the first row in the file represents this?

field names

Explanation:

There is a wide variety of technologies available to produce and store data. How to be: spreadsheets, databases, more specific statistical software and more. This generates a huge diversity of formats, sometimes chaotic.

Some of these formats do not always fit the desired opening levels.

CSV is a standard plain text file format where:

- The fields (columns) are separated by commas,.

- The records (rows) are separated by line breaks.

- Decimal numbers use. to separate the whole part from the decimal part.

- Double quotes are used "as a quotation mark character. The values in CSV tables that include special characters such as, or", must be enclosed in "for proper interpretation. In general, the first column is used for the field name

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%