Grams per milliliter

If concentration is expressed as grams per milliliter of so lution instead of grams per 100 ml an equivalent ex pression is... 

The table below gives the weight in grams X 10 of 1 mL of air at 760 mm of mercury pressure and at the temperature indicated. Density in grams per milliliter is the same as the specific gravity referred to water at 4°C as unity. To convert to density referred to air at 70°F as unity, divide the values below by 12,00,... 

ITi = weight in air of the water required to fill the pyknometer at fC W2 = weight in air of the liquid required to fill the pyknometer at t°C d = density of water in grams per milliliter at fC Sync = specific gravity of the liquid at t°C referred to water at t°C corrected for the buoyant effect of air... 

Example. A gas oil having a density of 0.84 grams per milliliter (37°AP1) is stored at 60°C (140°F) under a gas blanket of carbon dioxide (CO2) at a pressure of 1 atmosphere absolute. To estimate the amount of carbon dioxide dissolved in the gas oil at equilibrium, take the following steps ... 

The cup is a measure of volume widely used in cookbooks. One cup is equivalent to 225 mL. What is the density of clover honey (in grams per milliliter) if three quarters of a cup has a mass of252 g ... 

At a sufficiently low temperature, below —210°C, nitrogen is a solid with a density of 1.03 grams per milliliter. The volume occupied by one mole of the solid, called the molar volume, is... 

Now if we warm the solid to —210°C, the solid melts to form liquid nitrogen. The density of this liquid is 0.81 grams per milliliter. Now the volume of a mole is... 

If we raise the temperature still further, the liquid vaporizes to form nitrogen gas, taking whatever density is necessary to fill the container. The density now depends upon the volume of the container and the temperature. For the sake of comparison, suppose the gaseous nitrogen is placed in that volume that gives a pressure of one atmosphere when the container is placed in an ice bath at 0°C. Then the density is found to be only 0.00125 gram per milliliter. This means that the volume required for one mole of gas is... 

Water has a density of one gram per milliliter. Calculate the concentration of water (expressed in moles per liter) in pure water. Now calculate the concentration of water in 0.10 M aqueous solution of acetic acid, CHsCOOH, assuming each molecule of CH3COOH occupies the same volume as one molecule of H20. 

The inside of the lithosphere is called the core. Still higher pressures are expected and the density may rise as high as 18 grams per milliliter at the center of the earth. Some of the core may be liquid but the evidence is not decisive. 

Density is a ratio—the number of grams per milliliter, for example. In this regard, it is similar to speed. 

Theoretically, the extrapolation from PSP to LSD as far as fallout is concerned is complicated slightly by the difference in molecular weights. The rate of evaporation of the small droplets can be very rapid as the surface curvature increases. The smaller die molecular weight of die dissolved molecule, die greater die number of particles for a given number of grams per milliliter. It has been assumed that this error is not significant at this point in our experimental framework. 

How many milliliters of a 50.0% (by mass) HNO3 solution, with a density of 2.00 grams per milliliter, are required to make 500. mL of a 2.00 M HNO3 solution ... 

The cubic centimeter is exactly equal to 1 milliliter, so densities are also often expressed in grams per milliliter (g/mL). 

In practice, concentration measurements are done more easily on a volume basis than on a weight basis. Changing the concentration units from molality, mt, to grams per milliliter of solution, C<, results in... 

Converting from molal to grams per milliliter concentration units, and extrapolating to C2 = 0, gives ... 

A pre-1982 penny has a density of 8.92 grams per milliliter and a volume of 0.392 milliliters. What is its mass ... 

Theloaf of bread in the previous problem loses all its moisture after being left out for several days. Its volume remains at 1000 milliliters, but its density has been reduced to 0.4 grams per milliliter. What is its new mass ... 

A sack of groceries accidently set on a 500-gram loaf of bread increases the average density of the loaf to 5 grams per milliliter. What is its new volume ... 

In scientific work, the densities of solids and liquids usually are expressed in grams per cubic centimeter or grams per milliliter, whereas the densities of gases usually are expressed in grams per liter. In engineering work, densities customarily are expressed in pounds per cubic foot. 

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