Answer:
D 4,3,2
Explanation:
4 Co + 3 O2 ----> 2 Co2O3
Answer:
it will dilute to its natrual state. so c
Explanation:
Answer:
C
Explanation:
Cause waves causes gravity to make higher waves
Physical change is where u change physically or on the "outside" hope this helps, have a great day!
Answer: The pH of the solution is 11.2
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
where,
n = moles of solute
= volume of solution in ml
moles of = (1g=1000mg)
Now put all the given values in the formula of molality, we get
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
According to stoichiometry,
1 mole of gives 2 mole of
Thus 0.0298 moles of gives = moles of
Putting in the values:
Thus the pH of the solution is 11.2