What amount of heat, in kJ, is required to convert 1.30 g of water at 67.0 °C to 1.30 g of steam at 100.0 °C?

The reaction q+r2=r2q is found to be first order in r2 and

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

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?