How do you balance

BaCl2 + H2SO4 arrow

BaSO4 + HCl

Light spreads out from all directions in a straight line is called?

If a 65 kg student exerts a force with a magnitude of 100 N on a 100 kg desk The magnitude of the force that the desk exerts on him is

Which condition will cause the pressure exerted by a gas in a closed container to increase? a. an increase in volume b. an increase in temperature c. a decrease in molecular movement d. a decrease in the number of gas molecules

What is Newton's second Law?

Dylan has two cubes of iron. The larger cube has twice the mass of the smaller cube. He measures the smaller cube. Its mass is 20 grams, and its density is 7.87 g/cm3. What's the larger cube's volume?

For glass fragments to be individualized, what must be true? A. They must fit together B. They must have the same density C. They must look the same D. They must be the same color

In what way would a digital thermometer be preferable to those from a liquid-based thermometer? Digital thermometer readings are easier to use when performing calculations.

Why does the core of the sun contain more helium and less hydrogen than the surface of the sun?

What happens to a light ray passing through the center of a lens?

A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.870 m/s at an angle of 35.0° above the table, and it lands on the magazine 0.0770s after leaving the table. Ignore air resistance.