What pressure, in millimeters of mercury (mm Hg), is equivalent to 2.13 atmospheres

In two grams of element x combine with 4 grams of element y to form compound xy how many grams of element why would combined with 43 grams of x to form the same compound

estimate the force that a cyclist travelling at 6m/s needs to apply to the brakes to bring the bicycle to a stop in a distance of 15m. Ignore air resistance & friction.

A test rocket is launched vertically from ground level (y = 0 m), at time t = 0.0 s. The rocket engine provides constant upward acceleration during the burn phase.

Where is most of the mass of an atom located? in the nucleus in the orbits in the electrons it is split between the nucleus and the orbits

The diagram shows particles that make up an atom. Which label best completes the diagram?

The largest velocity reached by a falling object is its

Shows a 190 g hamster sitting on an 820 g wedge-shaped block. the block, in turn, rests on a spring scale. an extra-fine lubricating oil having μs=μk=0 is sprayed on the top surface of the block, causing the hamster to slide down.

What will happen to the hydronium ion concentration and pH of the water if hydrochloric acid is added to water?

What is the main driver of the water cycle

What two types of evidence are used to classify orgianisms?