Pls Help ASAP - Calcium reacts with oxygen to produce calcium oxide. What mass of calcium oxide is produced when 10g of calcium burns? Please show your working out.

Mass = 14.025 g

Explanation:

Given data:

Mass of Ca burn = 10 g

Mass of calcium oxide produced = ?

Solution:

Chemical equation:

2Ca + O₂     →    2CaO

Number of moles of Ca:

Number of moles = mass /molar mass

Number of moles = 10 g/ 40 g/mol

Number of moles = 0.25 mol

now we will compare the moles of Ca and CaO

               Ca            :             CaO

                 2             :              2

               0.25          :            0.25

Mass of CaO;

Mass = number of moles × molar mass

Mass = 0.25 mol × 56.1 g/mol

Mass = 14.025 g

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

a) the particles of the chair are strongly held together.