Sig Figs Rules & Reading a Buret

What are the rules regarding significant figures for non-zero digits and zeros between digits?

All non-zero digits are significant, and any zeros between significant digits are also significant.

Are leading zeros significant?

Leading zeros are not significant.

When are trailing zeros considered significant?

Trailing zeros in a number with a decimal point are significant.

Do exact numbers have significant figures?

Exact numbers (counts or defined quantities) have an infinite number of significant figures.

What rounding rule applies for addition and subtraction?

The result should be rounded to the least number of decimal places of any number in the operation.

What rounding rule applies for multiplication and division?

The result should be rounded to the least number of significant figures of any number in the operation.

How do you convert Fahrenheit to Celsius?

Use the formula $C = \frac{5}{9}(F - 32)$.

How do you convert Celsius to Kelvin?

Use the formula $K = C + 273.15$.

What is the order of operations in mathematics?

Perform operations in the order of PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction.

What should you do when presented with a word problem?

Carefully read the problem, extract relevant information, write down mathematical expressions, and solve step-by-step while applying significant figures rules.

What is the correct way to read a buret?

Read the bottom of the meniscus at eye level to avoid parallax errors and ensure the buret is upright for accuracy.

How do you determine the value from a buret reading?

After reading the value to two decimal places, subtract that number from 50.