Which of the these is a balanced chemical equation? A) CO (g) + O2 (g) → CO2 (g) B) CO (g) + 2O2 (g) → 2CO2 (g) C) 2CO (g) + O2 (g) → 2CO2 (g) D) 2CO (g) + 2O2 (g) → 2CO2 (g)

What is the mass of a steel cylinder that has a density of 75.0 g/ml and a volume of 12 ml?

What is the opposite charge of proton

Which measurements are scalar quantities? (Select all that apply) 5 mi northeast 12 km/hr 2 m north 2 m

A real gas is in a regime in which it is accurately described by the ideal gas equation of state. 27.1 g of the gas occupies 50.0 L at a pressure of 0.500 atm and a temperature of 449 K. Identify the gas.

You have a box that has a volume of 412cm and weighs 42g what is its density

What is the mass number of an ion with 107 electrons, 157 neutrons, and a 1 charge?

Which of the following is true about compounds

According to the chart, which substance has the lowest OH' concentration? A) urine lemon juice tomato juice D) black coffee

23 Which term identifies the half-reaction that occurs at the anode of an operating electrochemical cell? (1) oxidation (3) neutralization (2) reduction (4) transmutation

Which of the following is true? A) Gas atoms subjected to electricity emit bright lines of light. B) Gas atoms absorb white and emit a continuous spectrum of light. C) Gas atoms under high pressure emit dark lines against a continuous spectrum.