You are performing a reaction involving the collection of a gas at SATP. If 5.00 g of magnesium is added to 100.0 cm3 of 0.100 mol dm−3 HCl, determine the volume of hydrogen gas that will be collected at SATP.

The volume of hydrogen produced is 0.122 L

Explanation:

To calculate the moles :

The balanced chemical equation is:

According to stoichiometry :

2 moles of require = 1 mole of

Thus 0.01 moles of will require=  of

Thus is the limiting reagent as it limits the formation of product and is the excess reagent.

As 2 moles of give = 1 mole of

Thus 0.01 moles of give =  of

According to ideal gas equation:

P = pressure of gas = 1.0 atm  (SATP)

V = Volume of gas = ?  

n = number of moles = 0.005

R = gas constant =

T =temperature = (SATP)

Thus volume of hydrogen produced is 0.122 L

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.