Na chemical reaction, exactly 2 mol of substance a react to produce exactly 3 mol of substance b. 2a⟶3b how many molecules of substance b are produced when 27.6 g of substance a reacts? the molar mass of substance a is 27.8 g/mol. step 1: convert the mass of a to moles. moles of a: mol step 2: convert the number of moles of a to the number of moles of b. moles of b: mol step 3: convert the number of moles of b to molecules of b. molecules of b:

Answers:

Explanation:

1) Chemical equation (given):

2) Follow the given steps:

Step 1: Convert the mass of A to moles.

moles of A:

Step 2: Convert the number of moles of A to the number of moles of B.

        2 mol A : 3 mol B

       2 mol A / 3 mol B = 0.993 mol A / x

       ⇒ x = 0.993 mol A × 3 mol B / 2 mol A = 1.49 mol of B

Step 3: Convert the number of moles of B to molecules of B.

they both have a y in them

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).