Which list of elements contains a metal, a metalloid, a nonmetal, and a noble gas

What is the effect of adding more water to the following equilibrium reaction? CO2 + H2O - > 2H2CO3

Which of the following is an observation and not an inference? a. A cup with steam coming from it will be hot to the touch. b. Dark clouds in the sky will mean rain later in the afternoon. c. Bubbles form when two chemicals are mixed together. d.

Which term is used to describe the day of June 21 at north pole in terms of daylight and darkness

Give examples of particulate matter.

The pharmacy stocks a 90% w/v solution of drug 'w'. you need to prepare 200ml of a 5mg/ml solution for a patient. what volume of the stock solution will you need?

Initially you dissolved all, or most, of the p-aminobenzoic acid in ethanol. then you slowly added sulfuric acid. as you did this, a large amount of white solid formed. during the course of the reaction, that white solid dissolved.

How do you know if a chemical reaction has occurred?

Why must a container or system be closed for equilibrium to be established?

What is the bond angle between the hydrogen atoms in an ammonia (NH₃) molecule?

In Experiment 1, the density of pure ethanol was found to be:Question 1 options:less than 0.793 g/mL. 0.793 g/mL. 0.999 g/mL. greater than 0.999 g/mL.