The density of gold is 19.3 g/mL. What is the volume in milliliters of a gold nugget the weighs 68.7 g round to the correct number of dog figs only the numerical answer

To prepare for a laboratory period, a student lab assistant needs 125 g of a compound. A bottle containing 1/4 lb is available. Did the student have enough of the compound?

Many medical laboratory tests are run using 5.0 L blood serum. What is this volume in milliliters?

The GPS in my car indicates that t have 100. mi left until I reach my destination. What is this distance in kilometers?

You have a 250.0-mL graduated cylinder containing some water. You drop three marbles with a total mass of 95.2 g into the water. What is the average density of a marble?

When elemental iron corrodes it combines with oxygen in the air to ultimately form red brown iron(III) oxide which we call rust. (a) If a shiny iron nail with an initial mass of 23.2 g is weighed after being coated in a layer of rust, would you expect the mass to have increased, decreased, or remained the same? Explain. (b) If the mass of the iron nail increases to 24.1 g, what mass of oxygen combined with the iron?

At sea, distances are measured in nautical miles and speeds are expressed in knots. 1 nautical mile =6076.12ft 1 knot =1 nautical mi/h (exactly) (a) How many miles are in one nautical mile? (b) How many meters are in one nautical mile? (c) A ship is traveling at a rate of 22 knots. Express the ship's speed in miles per hour.

To determine the average mass of a popcorn kernel, you collect the following data: Plot the data with number of kernels on the x-axis and mass on the y-axis. Draw the best straight line using the points on the graph (or do a least- squares or linear regression analysis using a computer program), and then write the equation for the resulting straight line. What is the slope of the line? What does the slope of the line signify about the mass of a popcorn kernel? What is the mass of 20 popcorn kernels? How many kernels are there in a handful of popcorn with a mass of 20.88 g?

a chemist has a block of iron metal (denisty is 7.87 g/ml) The block weighs 1.90g What is the volume of the iron block in ml

Sodium Chloride was placed in a beaker and the beaker and the sodium chloride together had a mass shown below. If the mass of the empty beaker is 47.724g. What is the mass of the NaCl in grams? Your answer must be exactly correct and expressed to the correct number of significant digits. -80 100F ml -40 54.424 g