Answer: 1.87 atm
Explanation:
Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.
The combined gas equation is,
where,
= initial pressure of gas = 2.50 atm
= final pressure of gas = ?
= initial volume of gas = 26.4 ml
= final volume of gas = 36.2 ml
= initial temperature of gas =
= final temperature of gas =
Now put all the given values in the above equation, we get:
The new pressure is 1.87 atm by using combined gas law.
Answer:
A convex lens bends light rays inward, which results in the object being perceived as larger or closer.
Explanation:
Strontium (Sr) lies in the second group of the periodic table, which means it has two valence shell electrons so it forms the Sr⁺² ion. Meanwhile, bromine (Br) has seven valence shell electrons, which means it forms the Br⁻ ion. Each strontium atom is therefore able to donate electrons to two bromine atoms. So the ratio of the ions in neutral strontium bromate (SrBr₂) will be 1 : 2.
Explanation:
Formula to calculate pH is as follows.
pH =
It is given that pH is 6.8. Therefore, calculate the concentration of hydrogen ions as follows.
pH =
6.8 =
= antilog (-6.8)
= molarity
Thus, we can conclude that is molarity.