A lot of things in life involve chemistry. Let's start from the most obvious one - cooking.
While you are cooking, you need to mix ingredients and create homogeneous and heterogeneous mixtures, which is where chemistry is applied. Also, all of these ingredients change their physical and chemical state, which is also what chemistry studies.
Answer:
Calcium carbonate
Explanation:
Ionic compounds that tend to have one or more polyatomic ions are the ones that tend to exhibit both ionic and covalent bonding. The only one that meets this is calcium carbonate.
Answer:
B
Explanation:
If someone was to call your picture calligraphy it mean beautiful graphics so theres your answer
The given question is incomplete. The complete question is
A chemist dissolves 314 mg of pure nitric acid in enough water to make up 190 ml of solution. Calculate the pH of the solution. Be sure your answer has the correct number of significant digits.
Answer:
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 = 190 ml

pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
1 mole of
gives 1 mole of 
Thus 0.026 moles of
give=
of 
![pH=-\log [H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH%5E%2B%5D)
Putting in the values:
![pH=-\log[0.026]=1.58](https://tex.z-dn.net/?f=pH%3D-%5Clog%5B0.026%5D%3D1.58)
Thus pH of the solution is 1.58