Answer is: C. Reactants combine to form products.
In a chemical reaction, chemical bonds are forming and breaking and this cause the transformation of one group of chemical substances to another
For example synthesis of water from its elements: 2H₂ + O₂ → 2H₂O, nonpolar bonds between hydrogen and oxygen atoms (reactants) are breaking and new polar bonds are forming between hydrogen and oxygen in molecule of water (product).
Answer: B. 0.6125 m
For spherical concave mirror:
Height of the object,
Height of the image,
Object distance, u=-0.7 m
we need to find the distance of the image, v.
These are related by the following formula:
Insert the values:
Hence, option B is the correct.
Answer:
I think the coefficient is 4
Answer:
[H₃O⁺] = 3.162 × 10⁻⁹ moles / liter
Explanation:
The pH is calculated with the formula:
pH = -lg[H₃O⁺]
From here the concentration of hydronium ion (H₃O⁺) will be:
[H₃O⁺] =
[H₃O⁺] =
[H₃O⁺] = 3.162 × 10⁻⁹ moles / liter
In order to make a buffer that was 2 pH away from the pka, what you have to do is to dilute the buffer.
<h3>How to dilute the buffer.</h3>
If the buffer was made using a base and an acid, then there can be an adjustment through the use of hydrochloric acid.
It can also be adjusted to the value that you want through the use of base such as sodium hydroxide
Read more on buffer here:brainly.com/question/22390063