An element or compound which occurs naturally in the earth is a alloymineralrock.

Which best explains the circulation system within mammals? A. Mammals use a closed, single-loop circulatory system aided by a four-chambered heart. B. Mammals use a closed, double-loop circulatory system aided by a four-chambered heart. C.

Why can a silver electrode be used as an indicator electrode for ag and halides?

What atomic or hybrid orbitals make up the sigma bond between c1 and c2 in tetrafluoroethylene, c2f4?

What is defined as anything made up of atoms that has mass and takes up space? a. molecules b. alloys c. matter d. mixtures

Which of the following is a constant for 1 mole of any ideal gas

A 275-mL f lask contains pure helium at a pressure of 752 torr. A second f lask with a volume of 475 mL contains pure argon at a pressure of 722 torr.

The temperature of 6.24 l of a gas is increased from 25.0°c to 55.0°c at constant pressure. the new volume of the gas is

Which of the following statements regarding pH is true? Which of the following statements regarding pH is true? A pH of 10 is acidic, and a pH of 3 is alkaline. Buffers accelerate large changes in the pH of a solution.

How to find thr solute and solvent

Which process uses a volume of solution of known concentration to determine the concentration of another solution? (1) distillation (3) transmutation (2) substitution (4) titration