Which one of the following ions would be negatively charged with a charge of - 2?

10 electrons, 8 protons

18 electrons, 16 neutrons

0 electrons, 2 protons

6 electrons, 8 protons

Honeybees perform a dance to show other bees in the hive where flowers with nectar can be found. What type of adaptation is this? A. behavioral B. structural C. environmental D. reproductive

What are some of the careers involving Space and the study of the Universe?

A solution is saturated in both nitrogen gas and potassium bromide at 750C. When the solution is cooled to room temperature, what is most likely to happen? Why? (5 pts) a. Some nitrogen gas bubbles out of solution. b.

The greater the of a gas at a given temperature, the smaller its volume.

Which reagent is the limiting reactant when 0.700 mol al (oh) 3 and 0.700 mol h2so4 are allowed to react?

How does the calorie compare to the metric unit the joule? How do you calculate a calorie? Is it the same for all types of food?

Under which conditions would the solubility of a gas be greatest? A. high pressure and high temperature B. high pressure and low temperature C. low pressure and high temperature D. low pressure and low temperature

How many milliliters is 0.55 L? O A. 1000 ml OB. 0.00055 mL O C. 550 ml D. 55 mL

When a warm front passes your location, the temperature rises rapidly. As a result, air density: B? increases decreases remains the same

A scientist wished to carry out a chemical reaction in which two moles of aluminum combine with three moles of sulfur. He has 2.70 g of aluminum to react. How many grams of sulfur must he take to satisfy all the aluminum atoms? 1.51 g 2.14 g 3.