What was used prior to steam sterilizing to kill bacteria on instruments?
STP corresponds to a pressure of _______ kPa.
STP corresponds to a pressure of _______ kPa.
How many grams of potassium dichromate (K2Cr2O7) must be use…
How many grams of potassium dichromate (K2Cr2O7) must be used to prepare 0.75 L of a 0.01 M solution? (3 marks)
Name the following chemicals. (2 marks each) a) SrSO4 b)…
Name the following chemicals. (2 marks each) a) SrSO4 b) NaBr c) K2S d) LiCH3COO e) AlPO2 f) Cu(BrO2)2
What is the [H+] of a solution that has a pH of 12?
What is the of a solution that has a pH of 12?
The elements of family 1 are also named _______ .
The elements of family 1 are also named _______ .
A substance formed of two or more elements bonded chemically…
A substance formed of two or more elements bonded chemically is a:
Alkali metals all have _______ valence electron(s).
Alkali metals all have _______ valence electron(s).
b) Using the balanced equation from the previous question, w…
b) Using the balanced equation from the previous question, what mass of oxygen is needed to completely burn 150 g of C5H12? (3 marks)
A reaction which releases energy is called _______ .
A reaction which releases energy is called _______ .