Mg +  __HCl  → MgCl2 + H2

What coefficient is needed to balance the equation?

What do we call the average motion of moving atoms and molecules in the atmosphere?

A ball is whirled on the end of a string in a horizontal circle of radius R at const v. By which one of the following means can the centripetal acceleration of the b increased by a factor of two? 13.

A ball dropped by melissa is falling downward toward the floor

What are three examples of convection currents that occur in natural cycles?

if an object has a mass of 50g and a volume of 10cm^3, what would the density be of the object (hint, the units for density is g/cm^3)

Why will marchers at the end of a long parade following a band be out of step with marchers nearer the band

How would you explain photosynthesis to a new student in class

If the abosolute of a gas is 600 k, the temperature in degrees Celsius is

How does an electromagnetic wave propagate itself? a. A changing magnetic field induces an electric field perpendicular to the magnetic field. b. A changing electric field induces a magnetic field perpendicular to the electric field. c.

Which of the following is an example of convection? A. hot air rising and cooler air falling B. a hot object transferring heat to a cooler one C. a hot oven warming the air around it D. the rays of the Sun warming the earth