A 672 g sample of a gold and palladium alloy contains 3.41x102 atoms
What is the mass percentage of the gold in the alloy?
What is the mass percentage of the palladium in the alloy?

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

Before it was launched, a helium-filled balloon had a pressure of 201 kpa at a temperature of 27°c. at an altitude of 15,000 m, the pressure had decreased to 2.5 kpa and the temperature had dropped to -14 °c. the volume of the balloon increased to 59.3 m3. what is the original volume of the balloon? 13 m3 0.85 m3 0.077 m3 1.17 m3

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass