The correct answer for the blanks is : Primary key field
The primary key field is a place to record data that is unique to each record in the database or file. When you perform your hide duplicate command on primary key field, it will prevent any records from having the same value
Answer:
H30,+ion is known as Hydroniom Ion
Explanation:
brain ly ----
everyday
brainless this answer is correct
Option B: 4.3
There are following rules for rounding off numbers:
1. If the rounding digit has digit less than 5 (1,2,3 and 4) to its right, all the digits on right side of the rounding digit will drop out.
2. If the rounding digit has digit equal and greater than 5 (5,6,7,8 and 9) to its right, one is added to the rounding digit.
Jeff has to weigh 4.312 g sample of NaCl. To round off the underline number 4.<u>3</u>12, check for the digit right to it. It has 1, which is less than 5 thus according to the Rule 1, all the digits on right side of the rounding digit will drop out and the number gets rounded off to 4.3.
Therefore, 4.3 is most accurate measurement by Jeff.
Answer:
it's a precipitation reaction.
Explanation:
the solid produced is insoluble with water–making it a precipitate.