When there is no number in front of a chemical formula in a chemical equation, what number is understood?

f the absolute pressure in a tank is 128 kPa, determine the pressure head in mm of mercury. The atmospheric pressure is 100 kPa. The density of the mercury is 13,550 kg/m3. Express your answer using three significant figures.

Which statement best describes the relationship between plants and oxygen?

What type of energy is at work when mini-blinds are being raised or lowered

A soccer player kicks the ball toward a goal that is 16.8 m in front of him. The ball leaves his foot at a speed of 16.0 m/s and an angle of 28.08 above the ground. Find the speed of the ball when the goalie catches it in front of the net.

If someone wants to see around 90 * corner, at what angel would they have to place a mirror

A woman pulls a crate up a rough, inclined plane at constant speed. Which one (s) of the following statements concerning this situation is (are) correct? Group of answer choices The woman does positive work in pulling the crate up the incline.

In a compression wave, particles in the medium move a. perpendicular to the direction of the wave c. in the same direction as the wave b. opposite of the direction of the wave d. in depends upon state of the medium

Every choice has a positive or negative consequence. a. True b. False

How much heat is released when a 10 gram piece of aluminum foil is taken out of the oven and cools from 50 10 c

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.