An unknown gas effuses at 0.850 times the effusion rate of nitrogen dioxide, no2. estimate the the molar mass of the unknown gas

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?