How many molecules are there in 455 grams of Cu (NO) 2

Four competitors raced their bicycles in a 1000-meter race. During the last 300 meters, each bicycle was moving with the same speed. Using the graph, determine which competitor was riding the lightest bicycle.

Nitrogen dioxide undergoes thermal decomposition according to the second-order reaction 2 NO2 (g) → 2 NO (g) + O2 (g). When 0.700 M NO2 is allowed to react for 90.0 seconds, its concentration falls to 0.0463 M.

A sample of chlorine gas occupies 350.0 ml when its pressure is 735 mm hg. how many milliliters will is occupy when its pressure is 755 mm hg

Solubility Which of the following are nonelectrolytes? * Pentacarbon decahydride (C5H10) O Magnesium chloride (MgCl2) O Copper phosphate (Cu3 (PO4) 2] Sulfur trioxide (SO3) O 0 Aluminum oxide (A1203) Phosphorus pentachloride (PC15) Glucose (C6H1206)

What type of population dispersion pattern do people have in Europe? A. Random dispersion B. Uniform dispersion C. Scattered dispersion D. Clumped dispersion

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?