The product side of a chemical reaction is shown. → 7Ti2 (SO4) 3 Which number represents a coefficient?

2

3

4

7

Supermassive black holes are believed to be located at the center of many galaxies because a. the rotation curve of the galaxy indicates that 90% of the galaxy is dark matter. b.

A metal object is to be gold-plated by an electrolytic procedure using aqueous aucl3 electrolyte. Calculate the number of moles of gold deposited in 3.0 min by a constant current of 10. A.

4. Which is a chemical property of wood?

Which of the following is a vector quantity? A. 12 L of water B. 100 kg of flour C. 85 m/s on freeways D. 55 mph to the south

Which of these is a reason that earth is not a closed system when it comes to the conservation of matter

The mass of Jupiter is 1.9 * 1027 and that of the sun is 1.99 * 1030. The mean distance of Jupiter from the sun is 7.8 * 1011m. Calculate the gravitational force which the sun exerts on Jupiter, and the speed of Jupiter.

During a collision, a bus runs into a skateboarder inelastically. If the mass of the skateboarders is 70 kg and is moving at 12 m/s to the right, what is the final velocity of the skateboarder if the 2000 kg bus is traveling at 25 m/s to the left

What are hypotheses suggesting why urban children have more food allergies than children from rural areas? Select the TWO answers that are correct.

Which is a correct statement of what occurs at a turbine during electricity production?

2. Which graph shows a possible voltage profile over time for a 12 V lantern battery as it provides power to a bank of electric lights?