Which of the following statements about ohm’s law is true?
a. to increase the current, decrease the resistance.
b. keeping the same voltage and decreasing resistance decreases the current.
c. ohm’s law relates power, current and resistance.
d. increasing the voltage decreases current if resistance stays the same.

To increase the current, decrease the resistance.  

Explanation:

Ohm's law relates the current, resistance and the voltage. This law states that "the potential difference or the voltage across the ends of any conductor is related directly to the current flowing through it". The mathematical relationship is given by :

V = I × R

Where

R = resistance of the circuit

The current is inversely proportional to the resistance of the circuit. Hence, the correct statement about the Ohm's law is (a) " To increase the current, decrease the resistance".  

  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

i guess it’s a and b