Which of these are ionic compounds?

How many peanuts are contained in 19.34 grams of peanuts if one peanut has a mass of 0.0026 kg?

50.00 mL of 0.10 M HNO 2 (nitrous acid, K a = 4.5 * 10 - 4) is titrated with a 0.10 M KOH solution. After 25.00 mL of the KOH solution is added, the pH in the titration flask will be a. 2.17 b. 3.35 c. 2.41 d. 1.48 e. 7.00

Ben dug up some soil in his neighborhood that has very large particles and felt rough to the touch. When Ben added water to a sample of the soil it drained through very quickly which type of soil can Ben conclude that he has found

The negative ion found in bases is the Select one: a. hydroxide ion b. water ion c. hydrogen ion d. carbonate ion

Using the periodical table, choose the more reactive nonmetal ca or ra

In a laboratory, Carlos places one plate with grape jelly and another plate with cooked brown rice inside an ant farm. The next day, he finds that both plates are filled with ants.

Which statement is true at STP? (The atomic mass of Zn is 65.39 u.)

A sample of gas has a volume of 2.4 L and a pressure of 1.2 atm. What would the pressure of the same gas sample be if the volume is reduced to 1.8L at a constant temperature?

The elements most likely to form more than type of ion are the ... A. Transition metals B. alkali metals C. halogens D. alkaline earth metals

Mole-Mass Conversions How many moles in 28. o grams of Oxygen? What is the mass of 5.0 moles of Iron? Find the number of moles of argon in 452 g of argon. Find the grams in 16.5 mol of Hydrogen.