An atom loses two electrons. what is it referred to now?
a) a charged particle
b) a neutral atom
c) anion
d) cation

When an atom loses two electrons it is referred as Cation.

Explanation:

An atom contain equal number of both protons and electrons.When an atom loses 2 electrons it gets oxidized and acquires 2 unit positive charge.

 For example

        Ca-2e-=Ca2+

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2

you gotta add the following molecules so we can give u an answer

explanation: