Question

How many significant figures are in 25.030 , 0.006 070 , 1.004 and 1.3005 20 and why ?

Answer 1

25.030: 5 because zeroes are after decimal

0.006: 3 because 2 zeroes are after decimal

1.004: 4 because zeroes are between numbers

(Not sure what you meant to write for these)

1.300520: 7

1.3005: 5 because zeroes are after decimal and between numbers

20: 1 because zero isn't after a decimal or between numbers

Numbers other than 0 are always SigFigs!

Hope I helped! :)

Answer 2

Step-by-step explanation:

The significant figures are defined as the figures that give the value and information of the accuracy of a measurement. The zero is the number that can have two behaviors if it is to the right of us numbers is significant since it gives an idea of ​​the precision of the meditation, but if it is on the left and only serves to indicate the position of the decimal point it is not significant ; All of us numbers are always significant.

Using the above statements we will shrink the significant numbers numbers:

number Significant description

figure

25.030 5 all significant, zero right indicates measurement accuracy

0.006070 4 zeros to the left of the “6” indicate position of the decimal point, they are not significant

1,004 4 all significant

1.300520 7 all significant, zero right indicates accuracy is significant