A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to a volume of 77.0 mL. What is the density of the gold?

The ratio of the surface tension and density p of liquid 1 and 2 are 1:2 and 1:4 respectively. Equal amount of the two liquids is poured into two identical tubes. What will be the ratio of the rise in the liquid level in the two tubes?

An organic compound is composed of 38.7% C, 9.70% H, 51.6% O. The compound has a molecular formula mass of 62.0g/mol. What is the molecular formula of this organic compound? A) CHO B) C2H6O2 C) C4H6O4 D) C4H12O4

A combination reaction occurs when one reactant forms two or more products true or false

Which statements describe density? Check all that apply. 1-Density is a chemical property of an object. 2-The density of an object is constant 3-Density is a derived unit of measure. 4-Density is the sum of the mass and volume of an object.

A chemist weighed out 19.9 g of aluminum. Calculate the number of moles of aluminum she weighed out.

the state of water is determined solely by the conditions of: A) volume and mass B) temperature and volume C) pressure and mass D) pressure and temperature

When a chemical reaction and its reverse are occurring at the same time and at the same rate, the reaction has achieved a. displacement. c. imbalance. b. equilibrium. d. decomposition.

A certain shade of blue has a frequency of 7.04 * 1014 Hz. What is the energy of exactly one photon of this light?

a student determines. 8.2 mg of oxygen is dissolved in a 1000 gram sample of water at 15° Celsius what type of solution is the sample

A crane lifts a cargo box 10 m off the ground. If the crane lifts the cargo box twice as high, the potential energy will increase by