A gas sample occupies 95.0 mL at 755 mmHg at 15°C. Calculate the volume at 957 mmHG and 49 degrees C.​

What is driving behind plate tectonics (plate movment)? a) gravity only b) inertia c) convection and gravity d) the sun theres no option for science so i picked chemistry. plz

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture