Chapter 1, Problem 1.56E

How many grams F in 511.9 g Br2F6?    Put the answer in the box in regular (non-scientific) notation.  Use one figure past the decimal.

A small beaker was found to have a mass of 27.847 g. A 10.00 mL sample of an unknown liquidwas pipetted into the beaker. The mass of the beaker with the solution was 40.101g. Calculate the density of this solution. Express your result to the proper units and number of significant figures

A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. Note: your answer should be in the form of one or more fractions multiplied together. (0.030  μg/dL )* Box= ? g/mL

A bone fragment displaces 4.27 ml of water and is found to have a mass of 4.646 g. What is the density of the bone fragment? (do not include units in your answer, just the numeric part and round off to the correct number of singificant digits)

When subtracting or adding two numbers in scientific notation, why do the exponents need to be the same?

Chemistry A student performed the same experiment as you. The following data was recorded in their lab notebook. Mass of Mg, g Final buret volume, mL Pbarometric, in Hg PH2O, torr T, °C 0.035 41.86 27.02 17.5 20.0 Calculate the student's experimental value of R. Round your answer to four places after the decimal.

An empty beaker weighs 38.315 g. A 5.00 mL pipet sample of an unknown liquid was transferred to the beaker. The beaker weighs 44.953 g when weighed with the liquid in it. Calculate the density of the unknown liquid. Report a numerical value only in unit of grams per milliliter.

SIGNIFICANT FIGURES We have 5.15 ml of a solution containing 1.973 g/ml protein. How much total protein do we have? We have five results from an experiment: 2.6%, 2.4%, 2.5%, 2.3%, 2.4%. The average of these five measurements is ……….%. While doing multiple calculations on the same data set, rounding should be done for the final answer.

1.30 The largest computers now include disk storage space measured in petabytes. How many bytes are in a petabyte? (Recall that in computer terminology, the prefix is only “close” to the value it designates in the metric system.)