A sample of aluminum is placed in a 25.0 ml graduated cylinder containing 10.0 ml of water the level of the water rises to 18.0 ml aluminum has a density of 2.70 g/mL what is the mass?

Josh is studying pH calculations and tests a basic solution with a pH meter. He finds that the solution has a pH equal to 9.2. What is the pOH of the solution? A) 2.5 B) 4.8 C) 9.6 D) 10.2

A gas occupies volume of 30 milileters at 273 K if the temperature is increased to 364 k while the pressure remains constant what will be the volume of the gas

What is the greatest number of electrons in the first seven energy level

What type of energy source does electrolysis use?

If the oxidation state of H is + 1 and O is - 2, what is the oxidation state of C in C2H4O? - 1 + 2 + 1 - 2

How many chemical bonds do you expect ekasilicon to have and why

Express the rate of reaction in terms of the change in concentration of each of the reactants and products. 2A (g) → B (g) + C (g)

A type of element that has some of the properties of metals and some of nonmetals is called a

DDT is: A. banned in the United States B. still being used in other countries C. to blame for the near extinction of some bird species D. all of the above

7) Sodium is much more apt to exist as a cation than chlorine because: a) chlorine is a gas and sodium is a solid b) chlorine has a greater electron affinity than sodium c) chlorine is bigger than sodium d) chlorine has a greater ionization energy