Answer:
pH = 11.37
Explanation:
To find the pH of a solution, we can use the formula:
pH = -log[H+]
Let's plug in what we know.
pH = -log(4.3 x 
)
Evaluate the log.
pH = 11.37
Hope this helps!
Answer:
Iron w/Zinc. Metals react in weather of any type…and it is chemists job to try to figure out how to slow that process down. Zinc is a metal that is often coated on top of steel which is called galvanizing the steel, or “Galvanized Steel.” This process will help to slow down the rust as the zinc acts as an additional barrier to the air and moisture getting to the steel/iron.
Explanation:
A clastic sedimentary rock is
composed of silicate minerals and rock fragments. They are transported by
moving fluids such as sedimentation due to gravity and are deposited in the
area where it stays. They are composed mostly of feldspar, quartz, rock
(lithic) fragments, clay minerals and mica.
Answer:
B. How much energy it takes to heat a substance
Explanation:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
The substances with higher value of specific heat capacity require more heat to raise the temperature by one degree as compared the substances having low value of specific heat capacity. For example,
The specific heat capacity of oil is 1.57 j/g. K and for water is 4.18 j/g.K. So, water take a time to increase its temperature by one degree by absorbing more heat while oil will heat up faster by absorbing less amount of heat.
Consider that both oil and water have same mass of 5g and change in temperature is 15 K. Thus amount of heat thy absorbed to raise the temperature is,
For oil:
Q = m.c. ΔT
Q = 5 g× 1.67 j/g K × 15 K
Q = 125.25 j
For water:
Q = m.c. ΔT
Q = 5 g× 4.18 j/g K × 15 K
Q = 313.5 j
we can observe that water require more heat which is 313.5 j to increase its temperature.
Draw the electron-dot (Lewis) structure of O2. You will see that there is a double bond, thus making the chemical bond a covalent bond since they have to share a pair of electrons in order to complete their octet.
