Answer:
0.20 mol's
Explanation:
1.675 L = 1.675 dm^3
moles = V/(conc):
moles = 1.675/(8.5)
moles = 0.1970... --> 0.20
I think maybe 2.5
Hope this helps
Answer:
Concentration of hydrogen ion,
Explanation:
pH is defined as the negative logarithm of hydrogen ion's concentration.
The lower the value of pH, the higher the acidic the solution is.
The formula for pH can be written as:
Given,
pH of the saliva of Marco = 5.3
To calculate: Hydrogen ion concentration in the saliva
Thus, applying in the formula as:
So,
Answer:
2KClO3(s) + heat → 2KCl(s) + 3O2(g)
Explanation:
KClO3(s) + heat → KCl(s) + O2(g)
Adding coefficients so that there are 6 O atoms on both sides.
2KClO3(s) + heat → KCl(s) + 3O2(g)
Balancing K and Cl atoms, there are 2 of each on the left and 1 of each on the right.
2KClO3(s) + heat → 2KCl(s) + 3O2(g)
The equation is now balanced.