How many moles of NH3 are there in 77.5 g of NH3?

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.

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

How many square kilometers are equivalent to 28.5 cm2?

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.

Which of the following statements is/are true about the following graph () with a liner equation of y=1.44x+16.0  The graph represents a second order reaction The rate constant k is 1.44 M-s- The graph represents a first order reaction