Define a polyatomic ion?

A gas evolved during the fermentation of sugar was collected at 22.5°C and 702 mmHg. After purification its volume was found to be 25.0 L. How many moles of gas were collected? A) 0.95 mol B) 1.05 mol C) 12.5 mol D) 22.4 mol E) 724 mol

How can a prairie dog cause physical weathering

Jack's teacher has a box of objects. He asks each student to pull out an object and identify whether it is a mixture or a pure substance Jack pulls out a bowl of mixed fruit. What is this object and why is it a mixture or a pure substance? A.

The value of the equilibrium constant for the combination of nitrogen and oxygen to make NO is 2 x 10-9.

What kind of reaction is S (s) + O₂ (g) →SO₂ (g)

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