Eddie has a container of water. The water in the container has a mass of 25 grams. He places the container in the freezer and the water freezes. Which of the following is true?

The element thallium is 70% thallium-205 and 30% thallium-203. Calculate its relative atomic mass to 1 decimal place.

If 155 grams of potassium (K) reacts with 122 grams of potassium nitrate (KNO3), what is the limiting reagent?

Match the action to the effect on the equilibrium position for the reaction N2 (g) + 3H2 (g) ⇌ 2NH3 (g). Match Term Definition Increasing the pressure A) No effect Removing hydrogen gas B) Shift to the right Adding a catalyst C) Shift to the left

What will happen to the chemical equilibrium if MgCl2 is added? The chemical equilibrium of the system will be unaffected. The chemical equilibrium of the system will shift to the right to favor the forward reaction.

If electrons in water molecules were equally attracted to the hydrogen and oxygen atoms, how would this affect the polar covalent bonds between the hydrogen and oxygen atoms?

When an ionic bond forms, which part (s) of the atoms are directly involved?

When a 3.00 g 3.00 g sample of KBr KBr is dissolved in water in a calorimeter that has a total heat capacity of 1.36 kJ ⋅ K - 1, 1.36 kJ⋅K-1, the temperature decreases by 0.370 K. 0.370 K. Calculate the molar heat of solution of KBr. KBr.

How many moles of oxygen are required to fully react with 100 kg of lead sulfide?

Predict the electronegativity of the yet undiscovered element with Z = 119.

3.15 g of an unknown gas at 35 °C and 1.10 atm is stored in a 1.85-L flask. What is the density of the gas? what is the molar mass of the gas?