An unknown substance can be identified by

its mass.

a flame test

its density

B and C

How many grams of CO are produced when 39.0 g of C reacts?

If it takes 50.0 mL of 0.5 M Ca (OH) 2 solution to completely neutralize 125 mL of HNO solution, what is the concentration of the HNO3 solution?

Explain how the speed of a wave of sound or light can be changed?

10 ml of a 2.5m hcl solution was added to 500ml of 0.20m hno3 solution. what was the concentration of h ions in the final solution

3 attempts left Check my work Click in the answer box to activate the palette. Write the balanced chemical equation where liquid butane burns in oxygen gas to form carbon dioxide gas and water vapor. Use the smallest whole number coefficients.

Evaluate - if you put a scale in an elevator and weigh yourself as you ascend and the descend, does the scale have the same reading in both instances?

Why would you add a catalyst to something

A sample of the sugar d-ribose (C5H10O5) of mass 0.727 g was placed in a calorimeter and then ignited in the presence of excess oxygen. The temperature rose by 0.910 K. In a separate experiment in the same calorimeter, the combustion of 0.

the volume of an ideal gas in a container is 2.0 L what will be the volume of the gas if the pressure on the container is doubled while the temperature is reduced from 400 K to 200 K

Which of the Following Will result in increasing temperature of s gas