Answer:
lithium 3
Explanation:
This is because lithium has three protons
For very large numbers, it is much more convenient to use scientific notation. To do this, detect first the position of the decimal point. For whole numbers, the decimal point is place implicitly after the very last digit. Then, move this decimal point to the left until you reach to the last digit. In this case, you moved 8 places until you reach 6.4. Because the number is more than 1, the exponent would have a positive sign. Hence, the scientific notation would be 6.4×10⁸.
Answer: 1.01 x 10^20 microliters.
Explanation: volume is defined as a three-dimensional measure of space that comprises a length, a width and a height. In other words, we are asked to convert from one volumetric measure to another (cubic centimeters to microliters) —volume is measured in units of cubic centimeters in metric, cubic inches or cubic feet in English measurement.
If, 1 cm³ = 1000 uL (microliters) then,
1 uL - - - - - - - - - 0.001 cm³ = 1 x 10^-3 cm
x uL - - - - - - - - - 1.01×10^-23 cm³
Therefore,
x uL = 1.01 x 10^-23 cm³ / 0.001 cm³
x uL = 1.01 x 10^(-23 - - 3)
x uL = 1.01 x 10^( - 23 + 3)
x uL = 1.01 x 10^20
Which is to say that a single rhodium atom of volume 1.01 x 10^23 cm³ would occupy 1.01 x 10^20 microliters.
Hello!
The chemical reaction for the dissociation of Acetic Acid is the following:
CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺
To solve the problem we are going to use the Henderson-Hasselbach Equation, as follows, but first we need to know the pKa:
![pH=pKa + log( \frac{[CH_3COO^{-} ]}{[CH_3COOH]} )](https://tex.z-dn.net/?f=pH%3DpKa%20%2B%20log%28%20%5Cfrac%7B%5BCH_3COO%5E%7B-%7D%20%5D%7D%7B%5BCH_3COOH%5D%7D%20%29)
So, the pH of this solution is
5,24Have a nice day!
