Complete the following calculation. Answer to the correct number of significant digits. (1.45 x 10^-3 ) 

What two subatomic particles reside in the nucleus?

A leaky faucet drips water at a rate of 54.3 mL/hr. What is this rate in liters per day (L/d)? (1 L = 1000 mL, 1 day = 24 hr). Show the calculation.

A photon has the energy 5.55 × 10–19 J. What is this photon’s wavelength in nanometers? (1 nm = 10-9 m)

How many kilometers are in 3.55 miles? (1 mile = 1.609 km)

Complete the following calculation. Answer to the correct number of significant digits. 17.6 + 110.77 = 

A small car has a fuel efficiency of 28.1 miles per gallon (mi/gal). What is this fuel efficiency in kilometers per liter (km/L)? ( 1 mi = 1.609 km, 1 gal = 3.785 L). Show the calculation.

What is the atomic number of a gallium atom?

For a lead atom with 124 neutron, what is the mass number?

Please determine the number of significant digits for the following number: 0.0073205