What is the mass of a sample of water containing 3.55×1022 molecules of h2o?

The mass of water sample is 1.062 g

Explanation:

We are given:

Number of molecules of water =

According to mole concept:

number of molecules are present in 1 mole of a compound

So, number of molecules will be present in = of water.

To calculate the mass of a substance, we use the equation:

Molar mass of water = 18 g/mol

Moles of water = 0.059 moles

Putting values in above equation, we get:

Hence, the mass of water sample is 1.062 grams

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).