Newton’s first law of motion states that an object at rest stays at rest, and an object in motion stays in motion, unless acted on by an unbalanced force. which statements describe newton’s first law? check all that apply. a.    an object must be at rest before a force can move it. b.an overall net force must be applied to an object before it can move. c.newton’s first law of motion is also known as the law of inertia. d. inertia does not apply to newton’s first law. e. newton’s first law applies to an object whether it is moving or not.

B. An overall net force must be applied to an object before it can move.

C. Newton’s first law of motion is also known as the law of inertia.

E. Newton’s first law applies to an object whether it is moving or not.

Explanation:

Correct on edge

  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