Identify the number of atoms on the reactant side of the chemical equation.

Fe2O3 + 3H2 → 2Fe + 3H2O

There are blank Fe (iron) atoms.

There are blank O (oxygen) atoms.

There are blank H (hydrogen) atoms.

The cardiovascular system works closely with the __ system, which takes oxygen out of the air and makes it available for our cells to use. A. Endocrine B. Excretory C. Digestive D. Respiratory

A runner makes one lap around a 200m track of 25s. What were the runners average speed and average velocity?

If the tension in a rope is increased what will happen to the speed of the wave traveling through the rope

A force causes a mass of 4 kg to have an acceleration of 8 m/s2. Suppose something causes the mass to be one-quarter of its original amount. What will happen to the acceleration if the amount of force used remains the same?

A puppy has 245 J of KE. It has a velocity of 7 m/s. What is it's mass?

Where did the asteroids in the asteroid belt come from?

Your university radio stawon has a 5.0-kw radio transmixer that broadcasts uniformly in all direcwons; listeners within 15 km have reliable recepwon. you want to increase the power to double that range. what should be the new power?

A projectile is thrown upward so that its distance above the ground after t seconds is h (t) equals negative 16 t squared plus 704 t. a) Find the maximum height the object reaches. b) Find the time it takes the object to reach the ground.

Whats an example of projectile motion

The fact that the sun rises and sets at different times during the day depending on the time of year is an example of a data trend. True or False