What is the molarity (M) of a saline solution that contains 0.900 g sodium chloride NaCl dissolved in 100.0 mL of solution? (Molar Mass of NaCl is 58.44 g/mol)

What volume, mL of 12 M hydrochloric acid must be diluted with distilled water  to prepare 5.0 L of 0.10 M HCl?            1L = 1000 mL

Carbon dioxide can be formed according to the equation: 3CO(g) + O₃(g) → 3CO₂(g) If 40.0 L of ozone gas (O₃) is reacted at STP, exactly how many liters of carbon dioxide (CO₂) at STP would be produced? 1 mol = 22.4 L (at STP)

Convert the value of −25 °C to Kelvin and the value of 310 K to Celsius temperature.

How many valence electrons are in a magnesium (Mg) atom and a magnesium ion (Mg²⁺)?

What volume (in liters) is occupied by 33.4 g of chlorine gas (Cl₂) at 490 K and 5320 mm Hg? R = 0.0821 atm·L/mol·K; 1 atm = 760 mm Hg; molar mass of Cl₂ = 70.9 g/mol

Which of the following statements best explains why gases expand to fill their container?

How many valence electrons are in a sodium (Na) atom and a sodium ion (Na⁺)?

What volume of carbon dioxide gas (CO₂) is produced when 50.0 L of ethane gas (C₂H₆) reacts completely with 60.0 L of oxygen gas (O₂) at STP? 2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(g) 1 mol = 22.4 L (at STP)

What volume of carbon dioxide gas (CO₂) is produced when 56.0 L of methane gas (CH₄) reacts completely with 44.0 L of oxygen gas (O₂) at STP? CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g) 1 mol = 22.4 L (at STP)