A gas with a volume of 4.0 L at 90.0 kPa expands until the pressure drops to 20.0 kPa. What is its new volume if the temperature doesn't change?

Explain how line spectra are used to identify elements and what they indicate about atoms

1. name the gas produced by the reaction between calcium carbonate and dilute hydrochloric acid? 2. write an activity done to identify the gas

Describe how a physical property such as a mass or texture can change without causing a change in the substance

What process coverts hydrogen to helium to create energy in the sun?

Which type of reaction is represented by the equation below? Note: n and n are very large numbers equal to about 2000. H H - - C - C- - H H I esterification 2. fermentation saponification polymerization

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda