Determine the molarity of a solution prepared by dissolving 4.50 mol of nh4cl in sufficient water to make 2.00 l of solution.

The pressure and temperature inside a bike tires 10 ATM and 10 K receptively. What will the pressure be come in the tire when the temperature is increased to 20 K

Determine the molecular weight of H20. o 18 g O 18.0 g O 18.01 g O 18.016 g

How much does one mole of carbon weigh (round to two decimal places) ? Make sure your answer has units.

1024 atoms of helium (He) gas, as in a large party balloon, and 1024 atoms of copper (Cu), as in a stack of Cu pennies, are in the same room and thus have the same temperature. Which group of atoms has the most thermal energy?

Which formula contains two non-metals? BaO KI NaBr SiO2

Which element among elements 2, 4, and 6 has the lowest ionization energy?

What is the pressure, in mm Hg, of 2.50 moles of an ideal gas if it has a volume of 50.0 liters when the temperature is 27.0° C?

What element has the same valence electrons as carbon A) N B) AI C) Si or D) Be

What element is represented by the following electron configuration: 1s22s22p63s23p64s23d4 Question 2 options: Cr Ca Ge Ar

He substance, cocl2, is useful as a humidity indicator because it changes from pale blue to pink as it gains water from moist air. What is its name?