When you need heat to make reaction happen it is endothermic.
If heat was on the right side then type of reaction would be exothermic.
(A) nervous, muscular, skeletal
It depends on where your yields sign is, but usually it's the elements/ compounds in the front. In this case, HCL and NaOH
Answer:
15.3 %
Explanation:
Step 1: Given data
- Mass of the sample (ms): 230 g
- Mass of carbon (mC); 136.6 g
- Mass of hydrogen (mH): 26.4 g
- Mass of nitrogen (mN): 31.8 g
Step 2: Calculate the mass of oxygen (mO)
The mass of the sample is equal to the sum of the masses of all the elements.
ms = mC + mH + mN + mO
mO = ms - mC - mH - mN
mO = 230 g - 136.6 g - 26.4 g - 31.8 g
mO = 35.2 g
Step 3: Calculate the mass percent of oxygen
%O = (mO / ms) × 100% = (35.2 g / 230 g) × 100% = 15.3 %
Hey there!
Great question=)
Answer:Fog, these are clouds that form near the ground.
I hope this helps;)
