Structure of an atomatomelectronneutronsnucleusprot onswhat is the particle that is labeled with a question mark in the diagram? beta particlesave and exitmark this and return

A quark

Explanation:

Atoms are the fundamental particle of the matter. An atom consist of a proton, a neutron and electron revolves around the nucleus. The neutrons and protons are composed of quarks. It is a type of elementary particle.

The quarks are of six types i.e. up, down, charm, strange, top and bottom. There are also antiparticles of quarks known as anti quarks.

So, a question mark in the diagram is "a quark". Hence, this is the required solution.

  the grams     of oxygen gas   that can be produced     is 20.6   grams of o₂

calculation

2liclo₃ →   2 licl + 3 o₂

step 1:   find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5   +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281   moles

step 2:   use the   mole ratio   to calculate the moles of o2

from equation above, liclo₃: o₂   is 2: 3  

therefore the moles of   o₂=0.4281 moles x3/2 =0.6422   moles

step 3: find mass   of o₂

mass= moles x molar mass

from periodic table the   molar mass of   o₂ = 16 x2= 32 g/mol

mass=0.6422   moles   x   32 g/mol = 20.6 grams of o₂

cant without the picture! ?