if a sample if pure sodium bas a mass of 8.2 grams and sodium has an average atomic mass of 22.99 g/mol, how many sodium atoms are there in the sample?

What is true about a system in chemical equilibrium? No reactants remain in the system. The amount of product equals the amount of reactant. The amount of reactant changes, but over time remains about the same. There are no products in the system.

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Turn the word equation into a chemical balanced equation. Potassium chlorate breaks down into potassium chloride and oxygen gas

A rigid cylinder with a movable piston contains 50.0 liters of a gas at 30.0 degree C with a pressure of 1.00 atmosphere. What is the volume of the gas in the cylinder at STP? (1) 5.49 L (3) 55.5 L (2) 45.0 L (4) 455 L

2. Calculate the molarity of a solution if there are 1.5 mol of NaCl in 2.3 L of solution.

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Four properties of water are listed. 1. It reacts with halogens to form oxygen gas as one of the products. 2. It is transparent and tasteless in its pure form. 3. It freezes at a temperature of 0 °C and lower. 4.

According to the equation W = Fd which statement tells what can be done to reduce the amount of force needed to accomplish work?

A rigid tank contains an ideal gas at 40°C that is being stirred by a paddle wheel. The paddle wheel does 150 kJ of work on the ideal gas.

Which compound is an example of a binary ionic compound? Question 6 options: H2O H2SO4 MgF2 SF6