If the pH of a solution was 7 and you were to increase the hydroxide ion concentration 100x, what would the pH be?
A) 9
B) 5 M
C) 1 × 10-5 M
D) 700 M
E) 5
A
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When Po emits a beta particle, it transforms into a new element. What are the atomic number and atomic mass of this new element?
A) atomic number = 84; atomic mass = 219 B) atomic number = 86; atomic mass = 214 C) atomic number = 85; atomic mass = 218 D) atomic number = 82; atomic mass = 214
The main reason why moist air is lighter than dry air is that the molecular weight of water is less than that of either molecular nitrogen or molecular oxygen
Indicate whether the statement is true or false
Which of the following changes in conditions could represent melting of continental crust from the introduction of a mafic magma?
A. from A to C B. from A to B C. from B to D D. from A to D E. from C to B
How do weather and climate differ?
What will be an ideal response?