Classify the chemical equations as being balanced or not balanced.

CaO + 3C → CaC2 + CO

Na + H2O → 2NaOH + H2

4Fe + O2 → 2Fe2O3

2Mg + O2 → 2MgO

Calculate the density 1.33*10⁻⁷ gcm⁻³ into kgm⁻³.

Which of these should you not do when merging onto a freeway? A. Select a gap large enough to fit your vehicle. B. Change lanes smoothly. C. Change two lanes at once and speed up. D. Adjust your speed to create a safe following interval.

if a freely falling object were somehow equipped with a speedometer on a planet where the acceleration due to gravity is 20 m/s/s, then its speed reading would increase each second by

Care sunt marimile ce caracterizează nucleul?

What is the mass of a box with the weight of 78.2 N

An example of objects the move in revolution

How many hops does a kangoroo do in 1 day

What are the average velocity and average acceleration of the tip of a 2.4 cm long hour hand of a clock?

What is the number one and most important rule to remember in soccer?

Why are convection currents; why are they hotter and colder parts of earth