2. Which of the following elements is in the same period as phosphorus?

O oxygen

O magnesium

O nitrogen

O carbon

How many atoms are there in 1.75 moles of CHCl3

Which one is stronger acid with ph=5 or ph=2

1. What is light energy converted from in the bulb of a lamp? electric energy sound energy heat energy

A series circuit has two 5.0-ohm resistors and a power source of 9.0 volts. How will the current be affected and what will it be if another resistor (with a resistance of 7.5 ohms) is added to the circuit? A. increase; 0.51 amps B. increase; 0.

Which factors affect the movement of the ocean currents? Select the three correct answers. A. The deployment of drifter buoys. B. The rotation of Earth's axis. C. The temperature of ocean water. D. The differences in water density.

Which metal in Period 5 is very reactive and has two valence electrons in each atom? rubidium (RD) strontium (SI) zirconium (Z1) silver (Ag)

Sara and Sam went for a two-hour drive. According to the graph, between. 75 hours and 1.25 hours into their trip, they A) slowed down to a speed of 15km/hour. B) travelled at a constant rate of 30km/hour.

Define the following terms: acids, bases, oxoacids, oxoanions, and hydrates.

Calculate the concentration of a solution that has 6.7 moles in a volume of 0.6 liters.

Is sidewalk cement an element or a compound?