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 Liquid nitrogen boils at –195.8°C. Express the boiling point of liquid nitrogen in kelvin

Calculate the boiling temperature of a solution made by mixing 75.340 g of Na3PO4 (MW = 163.94) in 425.00 g of water. kb = 0.512 oC/m

Express the number 0.000053 in scientific notation.

How many square kilometers are equivalent to 28.5 cm2?

The diameter of Earth is 12.7 Mm.  Express this diameter in centimeters.

Formaldehyde has the formula CH2O.  How many molecules are there in 0.11 g of formaldehyde?

A barrel of oil contains 42.0 gallons.  How many liters is this?  (1L  = 1.06 qt)

The following initial reaction rates were observed for the reaction below: Experiment  [A] (M) [B] (M) Initial Rate (M/s) 1 5.60E-03 1.90E-02 2.30E-02 2 1.68E-02 1.90E-02 6.90E-02 3 5.60E-03 3.80E-02 9.20E-02 Determine the initial reaction rate for a solution containing 3.90 x 10-2 M of A and 3.40 x 10-3 M  of B. 

Calculate the pH of a 0.00284 M HClO4 solution.

What IEEE 802.11 variant supports a maximum sped of 54 Mbps and uses the 2.4-GHz band?