What phases are most common at high temperatures

It takes 5.2 minutes for a 4.0 g sample of francium-210 to decay until only 1.0 g is left. What is the half-life of francium-210? 7.8 minutes 1.3 minutes 2.6 minutes 5.2 minutes

How many grams of water would there be in 100.0g of hydrate? How many moles? Mass of the hydrate 0.946g Mass of the anhydrous CuSO4 0.614gCuSO4 Mass of water driven off? 0.347g H2O The percent water in the hydrate 36.0%

A glass laboratory flask is filled with gas at 27° C and 0.94 atm pressure, sealed and then heated to 141°C. what is the pressure inside the flask? p = ... atm

Heat is moved through the atmosphere mainly by?

How does the amount of water in magma affect how a volcano erupts

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